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  • Using JavaScript/jQuery to return a list of CSS selectors based on highlighted text

    - by Bungle
    I've been given some project requirements that involve (ideally) returning a list of CSS selectors based on highlighted text. In other words, a user could do something like this on a page: Click a button to indicate that their next text selection should be recorded. Highlight some text on the page. See a generated list of CSS selectors that correspond to all the elements that contain the highlighted text. Firstly, does this seem like a feasible goal? jQuery makes it easy to use a selector to access a particular element, but I'm not sure if the reverse holds true. If an element lacks an id attribute, I also don't know how you'd return an "optimized" selector - i.e., one that identifies an element uniquely. Maybe crawl up the DOM until you find an ID, then stem the selector from there? Secondly, from a high-level perspective, any ideas on how to go about this? Any tips or tricks that could speed development? I very much appreciate any help. Thanks!

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  • Why is this RMagick call generating a segmentation fault?

    - by Grant Heaslip
    I've been banging my head against the wall for the better part of an hour trying to figure out what's going wrong here, and I'm sure (or rather hoping) it's something fairly obvious that I'm overlooking. I'm using Ruby 1.9.1, Sinatra 1.0, and RMagick 2.13.1. ImageMagick and RMagick are correctly installed and functional—I've successfully manipulated and saved images from irb. The relevant part of the params array (formatting changes for the sake of readability): {"admin_user_new_image_file"=> { :filename=>"freddie-on-shetland-pony.png", :type=>"image/png", :name=>"admin_user_new_image_file", :tempfile=>#<File:/var/folders/a7/a7pO5jMcGLCww9XBGRvWfE+++TI/-Tmp-/RackMultipart20100514-20700-o2tkqu-0>, :head=>"Content-Disposition: form-data; name=\"admin_user_new_image_file\"; filename=\"freddie-on-shetland-pony.png\"\r\nContent-Type: image/png\r\n" } } The relevant code: post "/admin/user/:account_name/image/new/" do if params[:admin_user_new_image_file][:tempfile] thumbnail = Magick::Image.read("png:"+params[:admin_user_new_image_file][:tempfile].path).first end end The error (line 229 is the line starting with "thumbnail = ": config.ru:229: [BUG] Segmentation fault ruby 1.9.1p376 (2009-12-07 revision 26041) [i386-darwin10.3.0] -- control frame ---------- c:0042 p:---- s:0196 b:0196 l:000195 d:000195 CFUNC :read c:0041 p:0121 s:0192 b:0192 l:001ab8 d:000191 LAMBDA config.ru:229 c:0040 p:---- s:0189 b:0189 l:000188 d:000188 FINISH c:0039 p:---- s:0187 b:0187 l:000186 d:000186 CFUNC :call c:0038 p:0018 s:0184 b:0184 l:001d78 d:000183 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:865 c:0037 p:---- s:0182 b:0182 l:000181 d:000181 FINISH c:0036 p:---- s:0180 b:0180 l:000179 d:000179 CFUNC :instance_eval c:0035 p:0016 s:0177 b:0175 l:000174 d:000174 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:521 c:0034 p:0024 s:0171 b:0171 l:000148 d:000170 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:500 c:0033 p:---- s:0169 b:0169 l:000168 d:000168 FINISH c:0032 p:---- s:0167 b:0167 l:000166 d:000166 CFUNC :catch c:0031 p:0140 s:0163 b:0163 l:000148 d:000162 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:497 c:0030 p:---- s:0154 b:0154 l:000153 d:000153 FINISH c:0029 p:---- s:0152 b:0152 l:000151 d:000151 CFUNC :each c:0028 p:0073 s:0149 b:0149 l:000148 d:000148 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:476 c:0027 p:0076 s:0141 b:0141 l:000140 d:000140 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:601 c:0026 p:0009 s:0137 b:0137 l:000138 d:000136 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:411 c:0025 p:---- s:0135 b:0135 l:000134 d:000134 FINISH c:0024 p:---- s:0133 b:0133 l:000132 d:000132 CFUNC :instance_eval c:0023 p:0012 s:0130 b:0130 l:000121 d:000129 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566 c:0022 p:---- s:0128 b:0128 l:000127 d:000127 FINISH c:0021 p:---- s:0126 b:0126 l:000125 d:000125 CFUNC :catch c:0020 p:0013 s:0122 b:0122 l:000121 d:000121 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566 c:0019 p:0098 s:0115 b:0115 l:000138 d:000138 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:411 c:0018 p:0019 s:0108 b:0108 l:000107 d:000107 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:399 c:0017 p:0014 s:0104 b:0104 l:000103 d:000103 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/showexceptions.rb:24 c:0016 p:0150 s:0098 b:0098 l:000097 d:000097 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/methodoverride.rb:24 c:0015 p:0031 s:0092 b:0092 l:000091 d:000091 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/commonlogger.rb:18 c:0014 p:0018 s:0084 b:0084 l:002080 d:000083 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:979 c:0013 p:0032 s:0082 b:0082 l:000081 d:000081 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:1005 c:0012 p:0011 s:0078 b:0078 l:002080 d:002080 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:979 c:0011 p:0100 s:0074 b:0074 l:000ff0 d:000ff0 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/lint.rb:47 c:0010 p:0022 s:0068 b:0068 l:000067 d:000067 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/lint.rb:35 c:0009 p:0014 s:0064 b:0064 l:000063 d:000063 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/showexceptions.rb:24 c:0008 p:0031 s:0058 b:0058 l:000057 d:000057 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/commonlogger.rb:18 c:0007 p:0014 s:0050 b:0050 l:000049 d:000049 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/content_length.rb:13 c:0006 p:0320 s:0042 b:0042 l:000041 d:000041 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/handler/webrick.rb:48 c:0005 p:0256 s:0030 b:0030 l:000029 d:000029 METHOD /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:111 c:0004 p:0382 s:0020 b:0020 l:000019 d:000019 METHOD /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:70 c:0003 p:0123 s:0009 b:0009 l:000bc8 d:000008 BLOCK /usr/local/lib/ruby/1.9.1/webrick/server.rb:183 c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH c:0001 p:---- s:0002 b:0002 l:000001 d:000001 TOP --------------------------- -- Ruby level backtrace information----------------------------------------- config.ru:229:in `read' config.ru:229:in `block (2 levels) in <main>' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `call' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `block in route' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `instance_eval' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `route_eval' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:500:in `block (2 levels) in route!' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `catch' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `block in route!' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `each' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `route!' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:601:in `dispatch!' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `block in call!' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `instance_eval' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `block in invoke' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `catch' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `invoke' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `call!' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:399:in `call' /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/showexceptions.rb:24:in `call' /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/methodoverride.rb:24:in `call' /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/commonlogger.rb:18:in `call' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `block in call' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:1005:in `synchronize' /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `call' /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/lint.rb:47:in `_call' /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/lint.rb:35:in `call' /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/showexceptions.rb:24:in `call' /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/commonlogger.rb:18:in `call' /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/content_length.rb:13:in `call' /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/handler/webrick.rb:48:in `service' /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service' /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run' /usr/local/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread' -- C level backtrace information ------------------------------------------- 0x10010cd8d 0 libruby.dylib 0x000000010010cd8d rb_vm_bugreport + 77 0x10002b184 1 libruby.dylib 0x000000010002b184 report_bug + 260 0x10002b318 2 libruby.dylib 0x000000010002b318 rb_bug + 200 0x1000b7124 3 libruby.dylib 0x00000001000b7124 sigsegv + 132 0x7fff8301c80a 4 libSystem.B.dylib 0x00007fff8301c80a _sigtramp + 26 0x1032313ac 5 libMagickCore.3.dylib 0x00000001032313ac Splay + 300 0x103119245 6 libMagickCore.3.dylib 0x0000000103119245 AcquirePixelCache + 325 0x1031cb317 7 libMagickCore.3.dylib 0x00000001031cb317 AcquireImage + 375 0x10333035b 8 libMagickCore.3.dylib 0x000000010333035b ReadPNGImage + 155 0x1031418fd 9 libMagickCore.3.dylib 0x00000001031418fd ReadImage + 2221 0x101f1b72b 10 RMagick2.bundle 0x0000000101f1b72b rd_image + 339 0x101f1b59b 11 RMagick2.bundle 0x0000000101f1b59b Image_read + 36 0x1000fd0e4 12 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340 0x1000fe9b0 13 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896 0x1000ff8fc 14 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180 0x100104b93 15 libruby.dylib 0x0000000100104b93 vm_exec + 1203 0x100106643 16 libruby.dylib 0x0000000100106643 rb_vm_invoke_proc + 691 0x100106ccd 17 libruby.dylib 0x0000000100106ccd vm_call0 + 1085 0x1000317c6 18 libruby.dylib 0x00000001000317c6 rb_method_call + 406 0x1000fd0e4 19 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340 0x1000fe9b0 20 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896 0x1000ff8fc 21 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180 0x100104b93 22 libruby.dylib 0x0000000100104b93 vm_exec + 1203 0x100105ce6 23 libruby.dylib 0x0000000100105ce6 yield_under + 710 0x100106188 24 libruby.dylib 0x0000000100106188 specific_eval + 72 0x1000fd0e4 25 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340 0x1000fe9b0 26 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896 0x1000ff8fc 27 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180 0x100104b93 28 libruby.dylib 0x0000000100104b93 vm_exec + 1203 0x10010b6bf 29 libruby.dylib 0x000000010010b6bf rb_f_catch + 639 0x1000fd0e4 30 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340 0x1000fe9b0 31 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896 0x1000ff8fc 32 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180 0x100104b93 33 libruby.dylib 0x0000000100104b93 vm_exec + 1203 0x10010aac9 34 libruby.dylib 0x000000010010aac9 rb_yield + 505 0x100007902 35 libruby.dylib 0x0000000100007902 rb_ary_each + 82 0x1000fd0e4 36 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340 0x1000fe9b0 37 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896 0x1000ff8fc 38 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180 0x100104b93 39 libruby.dylib 0x0000000100104b93 vm_exec + 1203 0x100105ce6 40 libruby.dylib 0x0000000100105ce6 yield_under + 710 0x100106188 41 libruby.dylib 0x0000000100106188 specific_eval + 72 0x1000fd0e4 42 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340 0x1000fe9b0 43 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896 0x1000ff8fc 44 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180 0x100104b93 45 libruby.dylib 0x0000000100104b93 vm_exec + 1203 0x10010b6bf 46 libruby.dylib 0x000000010010b6bf rb_f_catch + 639 0x1000fd0e4 47 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340 0x1000fe9b0 48 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896 0x1000ff8fc 49 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180 0x100104b93 50 libruby.dylib 0x0000000100104b93 vm_exec + 1203 0x100106643 51 libruby.dylib 0x0000000100106643 rb_vm_invoke_proc + 691 0x100111803 52 libruby.dylib 0x0000000100111803 thread_start_func_2 + 835 0x100111921 53 libruby.dylib 0x0000000100111921 thread_start_func_1 + 17 0x7fff82ff58b6 54 libSystem.B.dylib 0x00007fff82ff58b6 _pthread_start + 331 0x7fff82ff5769 55 libSystem.B.dylib 0x00007fff82ff5769 thread_start + 13 [NOTE] You may encounter a bug of Ruby interpreter. Bug reports are welcome. For details: http://www.ruby-lang.org/bugreport.html Abort trap Anyone have any idea what's going on? Thanks!

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  • Default Transaction Timeout

    - by MattH
    I used to set Transaction timeouts by using TransactionOptions.Timeout, but have decided for ease of maintenance to use the config approach: <system.transactions> <defaultSettings timeout="00:01:00" /> </system.transactions> Of course, after putting this in, I wanted to test it was working, so reduced the timeout to 5 seconds, then ran a test that lasted longer than this - but the transaction does not appear to abort! If I adjust the test to set TransactionOptions.Timeout to 5 seconds, the test works as expected After Investigating I think the problem appears to relate to TransactionOptions.Timeout, even though I'm no longer using it. I still need to use TransactionOptions so I can set IsolationLevel, but I no longer set the Timeout value, if I look at this object after I create it, the timeout value is 00:00:00, which equates to infinity. Does this mean my value set in the config file is being ignored? To summarise: Is it impossible to mix the config setting, and use of TransactionOptions If not, is there any way to extract the config setting at runtime, and use this to set the Timeout property [Edit] OR Set the default isolation-level without using TransactionOptions

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  • Installing python-mysql with wamp's mysql

    - by sharat87
    Hello, (I'm not sure if this should be asked here or SU.. but seeing this question on SO, I am asking it here...) I have wamp (mysql-5.1.33) server setup on my vista machine, and I am trying to install python-mysql 1.2.3c1 to use the mysql version provided by wamp. At first, when I ran python setup.py install, I got an error saying it couldn't find the location of the mysql's bin folder. Looking into setup_windows.py, I noticed it was looking for a registry key and so I added that registry entry and I think it is able to find it now. But now, when I run python setup.py install, I get a different error saying Unable to find vcvarsall.bat. Any help on installing this appreciated. Here is the output of python setup.py install: running install running bdist_egg running egg_info writing MySQL_python.egg-info\PKG-INFO writing top-level names to MySQL_python.egg-info\top_level.txt writing dependency_links to MySQL_python.egg-info\dependency_links.txt reading manifest file 'MySQL_python.egg-info\SOURCES.txt' reading manifest template 'MANIFEST.in' writing manifest file 'MySQL_python.egg-info\SOURCES.txt' installing library code to build\bdist.win32\egg running install_lib running build_py copying MySQLdb\release.py -> build\lib.win32-2.6\MySQLdb running build_ext building '_mysql' extension error: Unable to find vcvarsall.bat Thanks a lot!

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  • Ant build from Android-generated build file fails - how to fix?

    - by Eno
    Building our Android app from Ant fails with this error: [apply] [apply] UNEXPECTED TOP-LEVEL ERROR: [apply] java.lang.OutOfMemoryError: Java heap space [apply] at java.util.HashMap.<init>(HashMap.java:209) [apply] at java.util.HashSet.<init>(HashSet.java:86) [apply] at com.android.dx.ssa.Dominators.compress(Dominators.java:96) [apply] at com.android.dx.ssa.Dominators.eval(Dominators.java:132) [apply] at com.android.dx.ssa.Dominators.run(Dominators.java:213) [apply] at com.android.dx.ssa.DomFront.run(DomFront.java:84) [apply] at com.android.dx.ssa.SsaConverter.placePhiFunctions(SsaConverter.java:265) [apply] at com.android.dx.ssa.SsaConverter.convertToSsaMethod(SsaConverter.java:51) [apply] at com.android.dx.ssa.Optimizer.optimize(Optimizer.java:100) [apply] at com.android.dx.ssa.Optimizer.optimize(Optimizer.java:74) [apply] at com.android.dx.dex.cf.CfTranslator.processMethods(CfTranslator.java:269) [apply] at com.android.dx.dex.cf.CfTranslator.translate0(CfTranslator.java:131) [apply] at com.android.dx.dex.cf.CfTranslator.translate(CfTranslator.java:85) [apply] at com.android.dx.command.dexer.Main.processClass(Main.java:297) [apply] at com.android.dx.command.dexer.Main.processFileBytes(Main.java:276) [apply] at com.android.dx.command.dexer.Main.access$100(Main.java:56) [apply] at com.android.dx.command.dexer.Main$1.processFileBytes(Main.java:228) [apply] at com.android.dx.cf.direct.ClassPathOpener.processArchive(ClassPathOpener.java:245) [apply] at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:130) [apply] at com.android.dx.cf.direct.ClassPathOpener.process(ClassPathOpener.java:108) [apply] at com.android.dx.command.dexer.Main.processOne(Main.java:245) [apply] at com.android.dx.command.dexer.Main.processAllFiles(Main.java:183) [apply] at com.android.dx.command.dexer.Main.run(Main.java:139) [apply] at com.android.dx.command.dexer.Main.main(Main.java:120) [apply] at com.android.dx.command.Main.main(Main.java:87) BUILD FAILED Ive tried giving Ant more memory by setting ANT_OPTS="-Xms256m -Xmx512m". (This build machine has 1Gb RAM). Do I just need more memory or is there anything else I can try?

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  • How to make Python Extensions for Windows for absolute beginners

    - by JR
    Hello: I've been looking around the internet trying to find a good step by step guide to extend Python in Windows, and I haven't been able to find something for my skill level. let's say you have some c code that looks like this: #include <stdio.h> #include <math.h> double valuex(float value, double rate, double timex) { float value; double rate, timex; return value / double pow ((1 + rate), (timex)); } and you want to turn that into a Python 3 module for use on a windows (64bit if that makes a difference) system. How would you go about doing that? I've looked up SWIG and Pyrex and in both circumstances they seem geared towards the unix user. With Pyrex I am not sure if it works with Python 3. I'm just trying to learn the basics of programing, using some practical examples. Lastly, if there is a good book that someone can recommend for learning to extend, I would greatly appreciate it. Thank you.

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  • __doPostBack is not working in firefox

    - by Dan Williams
    The __doPostBack is not working in firefox 3 (have not checked 2). Everything is working great in IE 6&7 and it even works in Chrome?? It's a simple asp:LinkButton with an OnClick event <asp:LinkButton ID="DeleteAllPicturesLinkButton" Enabled="False" OnClientClick="javascript:return confirm('Are you sure you want to delete all pictures? \n This action cannot be undone.');" OnClick="DeletePictureLinkButton_Click" CommandName="DeleteAll" CssClass="button" runat="server"> The javascript confirm is firing so I know the javascript is working, it's specirically the __doPostBack event. There is a lot more going on on the page, just didn't know if it's work it to post the entire page. I enable the control on the page load event. Any ideas? I hope this is the correct way to do this, but I found the answer. I figured I'd put it up here rather then in a stackoverflow "answer" Seems it had something to do with nesting ajax toolkit UpdatePanel. When I removed the top level panel it was fixed. Hope this helps if anyone else has the same problem. I still don't know what specifically was causing the problem, but that was the solution for me.

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  • JSON and jQuery.ajax

    - by Andreas
    Hello, im trying to use the jQuery UI autocomplete to communitate with a webservice with responseformate JSON, but i am unable to do so. My webservice is not even executed, the path should be correct since the error message does not complain about this. What strikes me is the headers, response is soap but request is json, is it supposed to be like this? Response Headersvisa källkod Content-Type application/soap+xml; charset=utf-8 Request Headersvisa källkod Accept application/json, text/javascript, */* Content-Type application/json; charset=utf-8 The error message i get is as follows (sorry for the huge message, but it might be of importance): soap:ReceiverSystem.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Xml.XmlException: Data at the root level is invalid. Line 1, position 1. at System.Xml.XmlTextReaderImpl.Throw(Exception e) at System.Xml.XmlTextReaderImpl.Throw(String res, String arg) at System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace() at System.Xml.XmlTextReaderImpl.ParseDocumentContent() at System.Xml.XmlTextReaderImpl.Read() at System.Xml.XmlTextReader.Read() at System.Web.Services.Protocols.SoapServerProtocol.SoapEnvelopeReader.Read() at System.Xml.XmlReader.MoveToContent() at System.Web.Services.Protocols.SoapServerProtocol.SoapEnvelopeReader.MoveToContent() at System.Web.Services.Protocols.SoapServerProtocolHelper.GetRequestElement() at System.Web.Services.Protocols.Soap12ServerProtocolHelper.RouteRequest() at System.Web.Services.Protocols.SoapServerProtocol.RouteRequest(SoapServerMessage message) at System.Web.Services.Protocols.SoapServerProtocol.Initialize() at System.Web.Services.Protocols.ServerProtocolFactory.Create(Type type, HttpContext context, HttpRequest request, HttpResponse response, Boolean& abortProcessing) --- End of inner exception stack trace --- This is my code: $('selector').autocomplete({ source: function(request, response) { $.ajax({ url: "../WebService/Member.asmx", dataType: "json", contentType: "application/json; charset=utf-8", type: "POST", data: JSON.stringify({prefixText: request.term}), success: function(data) { alert('success'); }, error: function(XMLHttpRequest, textStatus, errorThrown){ alert('error'); } }) }, minLength: 1, select: function(event, ui) { } }); And my webservice looks like this: [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [System.ComponentModel.ToolboxItem(false)] [ScriptService] public class Member : WebService { [WebMethod(EnableSession = true)] [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public string[] GetMembers(string prefixText) { code code code } } What am i doing wrong? Thanks in advance :)

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  • EWS 2010: Public Folder Problem using .NET

    - by Daniel
    I've recently coded a .NET Console app using C#. It's purpose was to read the emails within a specific folder, parse them for specific values and save them to a database. Our email system, at the time I originally coded this, was Exchange 2003. However, I was made aware we would soon be upgrading to Exchange 2010: ergo, I built the code to work in both environments. Following the migration to 2010, however, the app has broken. The app uses the EWS API for 2010 functionality. When it attempts to use the ExchangeService's FindFolders method to find the publicfoldersroot, it throws an exception. Here's the code: ExchangeService service = new ExchangeService(); FindFoldersResults findRootFldrs; service.UseDefaultCredentials = true; service.AutodiscoverUrl("[email protected]", delegate(string x) { return true; }); FolderView fview = new FolderView(100); fview.Traversal = FolderTraversal.Deep; if (findRootFldrsSub == null) { //Set to root to test local folders -- findRootFldrs = service.FindFolders(WellKnownFolderName.PublicFoldersRoot, fview); } The exception: "The mailbox that was requested doesn't support the specified RequestServerVersion" I've attempted: -Setting the exchangeservice to 2007 (throws an exception: "An internal server error occurred. The operation failed.") -Giving myself the highest level of permission to the Public Folder (no effect) -Manually setting my credentials (no effect) I can view the public folders in outlook; the publicfoldersroot property is available in the intellisense; the code works on local folders (I can parse my inbox). My current thinking is that it's a setting on the recent setup of Exchange 2010: unfortunately that isn't really my field.

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  • generic DAO in java

    - by akshay
    I am trying to develop generic DAO in java.I have tried the following.Is this a good way to implement generic dao?I dont want to use hibernate.I am trying to make it as generic as possible so that i dont have to repeate the same code again and again. public abstract class AbstractDAO<T> { protected ResultSet findbyId(String tablename, Integer id){ ResultSet rs= null; try { // the following lins in not working; pStmt = cn.prepareStatement("SELECT * FROM "+ tablename+ "WHERE id = ?"); pStmt.setInt(1, id); rs = pStmt.executeQuery(); } catch (SQLException ex) { System.out.println("ERROR in findbyid " +ex.getMessage() +ex.getCause()); ex.printStackTrace(); }finally{ return rs; } } } Now i have public class UserDAO extends AbstractDAO<User>{ public List<User> findbyid(int id){ Resultset rs =findbyid("USERS",id) //USERS is tablename in db List<Users> users = convertToList(rs); return users; } private List<User> convertToList(ResultSet rs) { List<User> userList= new ArrayList(); User user= new User();; try { while (rs.next()) { user.setId(rs.getInt("id")); user.setUsername(rs.getString("username")); user.setFname(rs.getString("fname")); user.setLname(rs.getString("lname")); user.setUsertype(rs.getInt("usertype")); user.setPasswd(rs.getString("passwd")); userList.add(user); } } catch (SQLException ex) { Logger.getLogger(UserDAO.class.getName()).log(Level.SEVERE, null, ex); } return userList; } }

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  • Suggestions for doing async I/O with Task Parallel Library

    - by anelson
    I have some high performance file transfer code which I wrote in C# using the Async Programming Model (APM) idiom (eg, BeginRead/EndRead). This code reads a file from a local disk and writes it to a socket. For best performance on modern hardware, it's important to keep more than one outstanding I/O operation in flight whenever possible. Thus, I post several BeginRead operations on the file, then when one completes, I call a BeginSend on the socket, and when that completes I do another BeginRead on the file. The details are a bit more complicated than that but at the high level that's the idea. I've got the APM-based code working, but it's very hard to follow and probably has subtle concurrency bugs. I'd love to use TPL for this instead. I figured Task.Factory.FromAsync would just about do it, but there's a catch. All of the I/O samples I've seen (most particularly the StreamExtensions class in the Parallel Extensions Extras) assume one read followed by one write. This won't perform the way I need. I can't use something simple like Parallel.ForEach or the Extras extension Task.Factory.Iterate because the async I/O tasks don't spend much time on a worker thread, so Parallel just starts up another task, resulting in potentially dozens or hundreds of pending I/O operations; way too much! You can work around that by Waiting on your tasks, but that causes creation of an event handle (a kernel object), and a blocking wait on a task wait handle, which ties up a worker thread. My APM-based implementation avoids both of those things. I've been playing around with different ways to keep multiple read/write operations in flight, and I've managed to do so using continuations that call a method that creates another task, but it feels awkward, and definitely doesn't feel like idiomatic TPL. Has anyone else grappled with an issue like this with the TPL? Any suggestions?

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  • Easy to use AutoHotkey/AutoIT alternatives for Linux

    - by Xeddy
    Hi all, I'm looking for recommendations for an easy-to-use GUI automation/macro platform for Linux. If you're familiar with AutoHotkey or AutoIT on Windows, then you know exactly the kind of features I need, with the level of complexity. If you aren't familiar, then here's a small code snippet of how easy it is to use AHK: InputBox, varInput, Please enter some random text... Run, notepad.exe WinWaitActive, Untitled - Notepad SendInput, %varInput% SendInput, !f{Up}{Enter}{Enter} WinWaitActive, Save SendInput, SomeRandomFile{Enter} MsgBox, Your text`, %varInput% has been saved using notepad! #n::Run, notepad.exe Now the above example, although a bit pointless, is a demo of the sort of functionality and simplicity I'm looking for. Here's an explanation for those who don't speak AHK: ----Start of Explanation of Code ---- Asks user to input some text and stores it in varInput Runs notepad.exe Waits till window exists and is active Sends the contents of varInput as a series of keystrokes Sends keystrokes to go to File - Exit Waits till the "Save" window is active Sends some more keystrokes Shows a Message Box with some text and the contents of a variable Registers a hotkey, Win+N, which when pressed executes notepad.exe ----End of Explanation---- So as you can understand, the features are quite obvious: Ability to easily simulate keyboard and mouse functions, read input, process and display output, execute programs, manipulate windows, register hotkeys, etc.. all being done without requiring any #includes, unnecessary brackets, class declarations etc. In short: Simple. Now I've played around a bit with Perl and Python, but its definitely no AHK. They're great for more advanced stuff, but surely, there has to be some tool out there for easy GUI automation? PS: I've already tried running AHK with Wine but sending keystrokes and hotkeys don't work.

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  • How do you keep all your languages straight?

    - by Chris Blackwell
    I think I'm going a little crazy. Right now, I'm working with the following languages (I was just doing a mental inventory): C++ - our game engine Assembler - low level debugging and a few co-processor specific routines Lua - our game engine scripting language HLSL - for shaders Python - our build system and utility tools Objective C/C++ - game engine platform code for Mac and iPhone C# - A few tools developed in our overseas office ExtendScript - Photoshop exporting tools ActionScript - UI scripting VBScript - some spreadsheet related stuff PHP - some web related stuff SQL - some web and tool related stuff On top of this are the plethora of API's that often have many different ways of doing the same thing: std library, boost, .NET, wxWidgets, Cocoa, Carbon, native script libraries for Python, Lua, etc, OpenGL, Direct3d, GDI, Aqua, augh! I find myself inadvertently conflating languages and api's, not realizing what I'm doing until I get syntax errors. I feel like I can't possibly keep up with it, and I can't possibly be proficient in all of these areas. Especially outside the realm of C++ and Python, I find myself programming more by looking at manuals that from memory. Do you have a similar problem? Ideas for compartmentalizing so you're more efficient? Deciding where you want to stay proficient? Organizational tips? Good ways to remember when you switch from Lua to C++ you need to start using semi-colons again? Rants on how complicated we programmers have made things for ourselves? Any ideas welcome!

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  • Atomic UPSERT in SQL Server 2005

    - by rabidpebble
    What is the correct pattern for doing an atomic "UPSERT" (UPDATE where exists, INSERT otherwise) in SQL Server 2005? I see a lot of code on SO (e.g. see http://stackoverflow.com/questions/639854/tsql-check-if-a-row-exists-otherwise-insert) with the following two-part pattern: UPDATE ... FROM ... WHERE <condition> -- race condition risk here IF @@ROWCOUNT = 0 INSERT ... or IF (SELECT COUNT(*) FROM ... WHERE <condition>) = 0 -- race condition risk here INSERT ... ELSE UPDATE ... where will be an evaluation of natural keys. None of the above approaches seem to deal well with concurrency. If I cannot have two rows with the same natural key, it seems like all of the above risk inserting rows with the same natural keys in race condition scenarios. I have been using the following approach but I'm surprised not to see it anywhere in people's responses so I'm wondering what is wrong with it: INSERT INTO <table> SELECT <natural keys>, <other stuff...> FROM <table> WHERE NOT EXISTS -- race condition risk here? ( SELECT 1 FROM <table> WHERE <natural keys> ) UPDATE ... WHERE <natural keys> (Note: I'm assuming that rows will not be deleted from this table. Although it would be nice to discuss how to handle the case where they can be deleted -- are transactions the only option? Which level of isolation?) Is this atomic? I can't locate where this would be documented in SQL Server documentation.

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  • Silverlight - Access the Layout Grid's DataContext in a DataGrid CellTemplate's DataTemplate?

    - by Sudeep
    Hi, I am using Silverlight 3 to develop an application. In my app, I have a layout Grid (named "LayoutGrid") in which I have a DataGrid (named "PART_datagrid") with DataGridTemplateColumns. The LayoutGrid is set a DataContext in which there is a Ladders list as a property. This Ladders list is set as the ItemsSource for the PART_datagrid. <Grid x:Name="LayoutRoot"> <DataGrid x:Name="PART_datagrid" ItemsSource="{Binding Ladders}"> ... <DataGridTemplateColumn> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <Button Name="DeleteLadder" Click.Command="{Binding ElementName=LayoutRoot, Path=DataContext.DeleteLadderCommand}" /> Now in one of the DataGridTemplateColumns I have a button which should invoke a Command thats present in the LayoutGrid's DataContext. So I tried Element-To-Element binding on my DataTemplate button as follows <Button Name="DeleteLadder" Click.Command="{Binding ElementName=LayoutRoot, Path=DataContext.DeleteLadderCommand}" /> But this does not seem to work. What I want to achieve is to handle the event of deletion of a DataGrid row at the parent DataContext level using the command. Can someone pls suggest how do I proceed on this? Thanks in advance...

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  • Accessing Elmah.axd with SqlErrorLog in SharePoint without adding user to db

    - by Chloraphil
    I have installed/configured Elmah on my personal SharePoint dev environment and everything works great since I'm logged in as admin, etc. I am using the MS Sql Server Error Log. (I am also using log4net to handle DEBUG/INFO/etc level logging and log statements are also stored in the db, in the same table as ELMAH's.) However, on the actual dev server (not my personal environment), when I access http://example/elmah.axd I get the error "Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'". I understand that this is the traditional error for the "double-hop problem" but I don't even want my credentials to be passed along - I would just like the database access to be made with the credentials of the Application Pool Identity. When using the SP object model the SPSecurity.RunWithElevatedPrivileges is available; however, I do not want to modify the Elmah source. My production environment precludes the use of SQL Server authentication, changing impersonation to false, or giving myself permissions on the db directly. How can I get this to work? Am I missing something?

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  • What GUI tool can I use for building applications that interact with multiple APIs?

    - by tarasm
    My company uses a lot of different web services on daily bases. I find that I repeat same steps over and over again on daily bases. For example, when I start a new project, I perform the following actions: Create a new client & project in Liquid Planner. Create a new client Freshbooks Create a project in Github or Codebasehq Developers to Codebasehq or Github who are going to be working on this project Create tasks in Ticketing system on Codebasehq and tasks in Liquid Planner This is just when starting new projects. When I have to track tasks, it gets even trickier because I have to monitor tasks in 2 different systems. So my question is, is there a tool that I can use to create a web service that will automate some of these interactions? Ideally, it would be something that would allow me to graphically work with the web service API and produce an executable that I can run on a server. I don't want to build it from scratch. I know, I can do it with Python or RoR, but I don't want to get that low level. I would like to add my sources and pass data around from one service to another. What could I use? Any suggestions?

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  • Unit Testing in Entity Framework 4 - using CreateSourceQuery

    - by Adam
    There are many great tutorials on abstracting your EF4 context so that it can be tested against (without involving a DB). Two great (and similar) examples are here: http://blogs.msdn.com/b/adonet/archive/2009/12/17/walkthrough-test-driven-development-with-the-entity-framework-4-0.aspx (oops, not enough rep. points to post second URL) basically you wind up querying your repository using linq-to-objects while testing, and linq-to-entities while running, and usually they behave the same, but when you start hitting more advanced functionality, problems arise. Here's the question. When using linq-to-objects against IObjectSet (ie, unit testing), CreateSourceQuery returns null, which will probably cause your entire query to crash and burn. ie O = db.Orders.First(); O.OrderItems.CreateSourceQuery().ToList(); Is there a way to get CreateSourceQuery to just return the underlying collection, rather than null when working with collections? Unfortunately EntityCollection is sealed, and so cannot be mocked. This isn't really the end or the world if EF4 won't let you abstract things to this level, I just wanted to make sure there wasn't something I was missing.

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  • Keyboard navigation for jQuery Tabs

    - by Binyamin
    How to make Keyboard navigation left/up/right/down (like for photo gallery) feature for jQury Tabs with History? Demo without Keyboard feature in http://dl.dropbox.com/u/6594481/tabs/index.html Needed functions: 1. on keyboardtop/down make select and CSS showactivenested ajax tabs from 1-st to last level 2. on keyboardleft/right changeback/forwardcontent ofactivenested ajax tabs tab 3. an extra option, makeactivenested ajax tab on 'cursor-on' on concrete nested ajax tabs level Read more detailed question with example pictures in http://stackoverflow.com/questions/2975003/jquery-tools-to-make-keyboard-and-cookies-feature-for-ajaxed-tabs-with-history /** * @license * jQuery Tools @VERSION Tabs- The basics of UI design. * * NO COPYRIGHTS OR LICENSES. DO WHAT YOU LIKE. * * http://flowplayer.org/tools/tabs/ * * Since: November 2008 * Date: @DATE */ (function($) { // static constructs $.tools = $.tools || {version: '@VERSION'}; $.tools.tabs = { conf: { tabs: 'a', current: 'current', onBeforeClick: null, onClick: null, effect: 'default', initialIndex: 0, event: 'click', rotate: false, // 1.2 history: false }, addEffect: function(name, fn) { effects[name] = fn; } }; var effects = { // simple "toggle" effect 'default': function(i, done) { this.getPanes().hide().eq(i).show(); done.call(); }, /* configuration: - fadeOutSpeed (positive value does "crossfading") - fadeInSpeed */ fade: function(i, done) { var conf = this.getConf(), speed = conf.fadeOutSpeed, panes = this.getPanes(); if (speed) { panes.fadeOut(speed); } else { panes.hide(); } panes.eq(i).fadeIn(conf.fadeInSpeed, done); }, // for basic accordions slide: function(i, done) { this.getPanes().slideUp(200); this.getPanes().eq(i).slideDown(400, done); }, /** * AJAX effect */ ajax: function(i, done) { this.getPanes().eq(0).load(this.getTabs().eq(i).attr("href"), done); } }; var w; /** * Horizontal accordion * * @deprecated will be replaced with a more robust implementation */ $.tools.tabs.addEffect("horizontal", function(i, done) { // store original width of a pane into memory if (!w) { w = this.getPanes().eq(0).width(); } // set current pane's width to zero this.getCurrentPane().animate({width: 0}, function() { $(this).hide(); }); // grow opened pane to it's original width this.getPanes().eq(i).animate({width: w}, function() { $(this).show(); done.call(); }); }); function Tabs(root, paneSelector, conf) { var self = this, trigger = root.add(this), tabs = root.find(conf.tabs), panes = paneSelector.jquery ? paneSelector : root.children(paneSelector), current; // make sure tabs and panes are found if (!tabs.length) { tabs = root.children(); } if (!panes.length) { panes = root.parent().find(paneSelector); } if (!panes.length) { panes = $(paneSelector); } // public methods $.extend(this, { click: function(i, e) { var tab = tabs.eq(i); if (typeof i == 'string' && i.replace("#", "")) { tab = tabs.filter("[href*=" + i.replace("#", "") + "]"); i = Math.max(tabs.index(tab), 0); } if (conf.rotate) { var last = tabs.length -1; if (i < 0) { return self.click(last, e); } if (i > last) { return self.click(0, e); } } if (!tab.length) { if (current >= 0) { return self; } i = conf.initialIndex; tab = tabs.eq(i); } // current tab is being clicked if (i === current) { return self; } // possibility to cancel click action e = e || $.Event(); e.type = "onBeforeClick"; trigger.trigger(e, [i]); if (e.isDefaultPrevented()) { return; } // call the effect effects[conf.effect].call(self, i, function() { // onClick callback e.type = "onClick"; trigger.trigger(e, [i]); }); // default behaviour current = i; tabs.removeClass(conf.current); tab.addClass(conf.current); return self; }, getConf: function() { return conf; }, getTabs: function() { return tabs; }, getPanes: function() { return panes; }, getCurrentPane: function() { return panes.eq(current); }, getCurrentTab: function() { return tabs.eq(current); }, getIndex: function() { return current; }, next: function() { return self.click(current + 1); }, prev: function() { return self.click(current - 1); } }); // callbacks $.each("onBeforeClick,onClick".split(","), function(i, name) { // configuration if ($.isFunction(conf[name])) { $(self).bind(name, conf[name]); } // API self[name] = function(fn) { $(self).bind(name, fn); return self; }; }); if (conf.history && $.fn.history) { $.tools.history.init(tabs); conf.event = 'history'; } // setup click actions for each tab tabs.each(function(i) { $(this).bind(conf.event, function(e) { self.click(i, e); return e.preventDefault(); }); }); // cross tab anchor link panes.find("a[href^=#]").click(function(e) { self.click($(this).attr("href"), e); }); // open initial tab if (location.hash) { self.click(location.hash); } else { if (conf.initialIndex === 0 || conf.initialIndex > 0) { self.click(conf.initialIndex); } } } // jQuery plugin implementation $.fn.tabs = function(paneSelector, conf) { // return existing instance var el = this.data("tabs"); if (el) { return el; } if ($.isFunction(conf)) { conf = {onBeforeClick: conf}; } // setup conf conf = $.extend({}, $.tools.tabs.conf, conf); this.each(function() { el = new Tabs($(this), paneSelector, conf); $(this).data("tabs", el); }); return conf.api ? el: this; }; }) (jQuery); /** * @license * jQuery Tools @VERSION History "Back button for AJAX apps" * * NO COPYRIGHTS OR LICENSES. DO WHAT YOU LIKE. * * http://flowplayer.org/tools/toolbox/history.html * * Since: Mar 2010 * Date: @DATE */ (function($) { var hash, iframe, links, inited; $.tools = $.tools || {version: '@VERSION'}; $.tools.history = { init: function(els) { if (inited) { return; } // IE if ($.browser.msie && $.browser.version < '8') { // create iframe that is constantly checked for hash changes if (!iframe) { iframe = $("<iframe/>").attr("src", "javascript:false;").hide().get(0); $("body").append(iframe); setInterval(function() { var idoc = iframe.contentWindow.document, h = idoc.location.hash; if (hash !== h) { $.event.trigger("hash", h); } }, 100); setIframeLocation(location.hash || '#'); } // other browsers scans for location.hash changes directly without iframe hack } else { setInterval(function() { var h = location.hash; if (h !== hash) { $.event.trigger("hash", h); } }, 100); } links = !links ? els : links.add(els); els.click(function(e) { var href = $(this).attr("href"); if (iframe) { setIframeLocation(href); } // handle non-anchor links if (href.slice(0, 1) != "#") { location.href = "#" + href; return e.preventDefault(); } }); inited = true; } }; function setIframeLocation(h) { if (h) { var doc = iframe.contentWindow.document; doc.open().close(); doc.location.hash = h; } } // global histroy change listener $(window).bind("hash", function(e, h) { if (h) { links.filter(function() { var href = $(this).attr("href"); return href == h || href == h.replace("#", ""); }).trigger("history", [h]); } else { links.eq(0).trigger("history", [h]); } hash = h; window.location.hash = hash; }); // jQuery plugin implementation $.fn.history = function(fn) { $.tools.history.init(this); // return jQuery return this.bind("history", fn); }; })(jQuery); $(function() { $("#list").tabs("#content > div", {effect: 'ajax', history: true}); });

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  • How to best transfer large payloads of data using wsHttp with WCF with message security

    - by jpierson
    I have a case where I need to transfer large amounts of serialized object graphs (via NetDataContractSerializer) using WCF using wsHttp. I'm using message security and would like to continue to do so. Using this setup I would like to transfer serialized object graph which can sometimes approach around 300MB or so but when I try to do so I've started seeing a exception of type System.InsufficientMemoryException appear. After a little research it appears that by default in WCF that a result to a service call is contained within a single message by default which contains the serialized data and this data is buffered by default on the server until the whole message is completely written. Thus the memory exception is being caused by the fact that the server is running out of memory resources that it is allowed to allocate because that buffer is full. The two main recommendations that I've come across are to use streaming or chunking to solve this problem however it is not clear to me what that involves and whether either solution is possible with my current setup (wsHttp/NetDataContractSerializer/Message Security). So far I understand that to use streaming message security would not work because message encryption and decryption need to work on the whole set of data and not a partial message. Chunking however sounds like it might be possible however it is not clear to me how it would be done with the other constraints that I've listed. If anybody could offer some guidance on what solutions are available and how to go about implementing it I would greatly appreciate it. Related resources: Chunking Channel How to: Enable Streaming Large attachments over WCF Custom Message Encoder Another spotting of InsufficientMemoryException I'm also interested in any type of compression that could be done on this data but it looks like I would probably be best off doing this at the transport level once I can transition into .NET 4.0 so that the client will automatically support the gzip headers if I understand this properly.

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  • Show Add button after Edit button is clicked?

    - by David.Chu.ca
    I have a view with navigation bar control on the top. The view is in the second level with a "back" button is displayed on the left by default. In my view class, I added a default navigation edit button on the right: self.navigationbarItem.rightButtonItem = self.editButtonItem; with this line of code, an edit button is on the right side, and when it is clicked, the view (table view) becomes editable with delete mark on the left for each row. After that, the edit button's caption becomes "done". All those are done by the default edit button built in the navigation control, I think. I would like to add an add button the left, or replace "back" button when edit is clicked. I guess I have to implement some kind of delegate in my view class. This would provide a place to plug in my code to add the add button on the left when edit button is clicked, and to restore "back" button back when the done button is clicked. If so, what's the delegate? Or is there any other way to achieve it?

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  • why does windows authentication / impersonation fail on asp.net application with iis 7.5 / windows 7

    - by velvet sheen
    hi there; i'm troubleshooting why i cannot get past the login dialog on an asp.net site configured for windows authentication and impersonation. help me before i switch to os x development and objective-c i have an asp.net 2.0 application and i'm trying to deploy it on windows 7 with iis 7.5. i've created a new site, and bound it to localhost and a fully qualified domain name. the fqdn is in my hosts file, and is redirected to 127.0.0.1 the site is also running with an appdomain i created, with integrated pipeline mode, and the process model identity is set to ApplicationPoolIdentity. web.config includes the following: <trust level="High" /> <authentication mode="Windows" /> <authorization> <deny users="?"/> </authorization> <identity impersonate="true"/> acl on the directory for the site is desperation set to everyone full control, the application pool virtual account (windows 7 thing) is set to full control on the physical directory for the site also. iis authentication has asp.net impersonation enabled, and windows authentication enabled. when i connect to the site as localhost, it permits me to get past the login prompt and the application loads without incident. when i connect to the site as the fqdn set in the host headers bindings for this site/ip/port, i cannot get past the login prompt. clicking cancel throws to a http 401.1 error page. why? thanks very much in advance.

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  • A couple of questions on exceptions/flow control and the application of custom exceptions

    - by dotnetdev
    1) Custom exceptions can help make your intentions clear. How can this be? The intention is to handle or log the exception, regardless of whether the type is built-in or custom. The main reason I use custom exceptions is to not use one exception type to cover the same problem in different contexts (eg parameter is null in system code which may be effect by an external factor and an empty shopping basket). However, the partition between system and business-domain code and using different exception types seems very obvious and not making the most of custom exceptions. Related to this, if custom exceptions cover the business exceptions, I could also get all the places which are sources for exceptions at the business domain level using "Find all references". Is it worth adding exceptions if you check the arguments in a method for being null, use them a few times, and then add the catch? Is it a realistic risk that an external factor or some other freak cause could cause the argument to be null after being checked anyway? 2) What does it mean when exceptions should not be used to control the flow of programs and why not? I assume this is like: if (exceptionVariable != null) { } Is it generally good practise to fill every variable in an exception object? As a developer, do you expect every possible variable to be filled by another coder?

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  • MySQL performance - 100Mb ethernet vs 1Gb ethernet

    - by Rob Penridge
    Hi All I've just started a new job and noticed that the analysts computers are connected to the network at 100Mbps. The ODBC queries we run against the MySQL server can easily return 500MB+ and it seems at times when the servers are under high load the DBAs kill low priority jobs as they are taking too long to run. My question is this... How much of this server time is spent executing the request, and how much time is spent returning the data to the client? Could the query speeds be improved by upgrading the network connections to 1Gbps? (Updated for the why): The database in question was built to accomodate reporting needs and contains massive amounts of data. We usually work with subsets of this data at a granular level in external applications such as SAS or Excel, hence the reason for the large amounts of data being transmitted. The queries are not poorly structured - they are very simple and the appropriate joins/indexes etc are being used. I've removed 'query' from the Title of the post as I realised this question is more to do with general MySQL performance rather than query related performance. I was kind of hoping that someone with a Gigabit connection may be able to actually quantify some results for me here by running a query that returns a decent amount of data, then they could limit their connection speed to 100Mb and rerun the same query. Hopefully this could be done in an environment where loads are reasonably stable so as not to skew the results. If ethernet speed can improve the situation I wanted some quantifiable results to help argue my case for upgrading the network connections. Thanks Rob

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  • IKImageView resize is blocky

    - by Brian Postow
    I am putting an image into an IKImageView, and immediately sizing it to fit. Whenever I do this, the image originally appears at 1-1 size (huge) and then resizes down, which would be fine if the animation was smooth. However, the animation looks ... fluttery? There are big blocks, like 2 inches square, of the image that appear and shrink independently of each other. The effect is a little annoying, and almost to the level where it might give an epileptic a seizure... (I'm exaggerating a little). Is this a bug in IKImageView? Is it a bug in the animation? Will it go away if I turn off the animation (How do I do that? setAnimates: NO doesn't seem to do anything, nor does overloading animates to return NO in my subclass... EDIT: addedcode: NSImage* image = [doc currentImage]; [imageView setImage: image]; [imageView zoomImageToFit: self]; This is in the app controller, so self is the application (or plugin, depending on which version I'm looking at)

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