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• SELECT SQL statement problem when getting info from an accdb in VB.Net

  - by Shane Fagan

  Hi again all, im getting the error below for this SQL statement in VB.Net SQLString = "SELECT AllPropertyDetails.PropertyID, Street, Town, County, Acres, Quotas, ResidenceDetails, Status, HighestBid, AskingPrice FROM AllPropertyDetails " SQLString += "INNER JOIN Land ON AllPropertyDetails.PropertyID = Land.PropertyID " SQLString += "WHERE Deleted = False " If PriceRadioButton.Checked = True Then SQLString += "ORDER BY AskingPrice ASC" ElseIf AcresRadioButton.Checked = True Then SQLString += "ORDER BY Acres ASC" End If Any ideas why its not working? The fields in the DB and the table names seem ok but its not working :/ System.InvalidOperationException was unhandled Message="An error occurred creating the form. See Exception.InnerException for details. The error is: No value given for one or more required parameters." Source="AuctioneerProject" StackTrace: at AuctioneerProject.My.MyProject.MyForms.Create__Instance__[T](T Instance) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 190 at AuctioneerProject.My.MyProject.MyForms.get_LandReport() at AuctioneerProject.ReportsMenu.LandButton_Click(Object sender, EventArgs e) in C:\Users\admin\Desktop\Auctioneers\AuctioneerProject\AuctioneerProject\ReportsMenu.vb:line 4 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(ApplicationContext context) at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun() at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel() at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine) at AuctioneerProject.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() InnerException: System.Data.OleDb.OleDbException ErrorCode=-2147217904 Message="No value given for one or more required parameters." Source="Microsoft Office Access Database Engine" StackTrace: at System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(OleDbHResult hr) at System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(tagDBPARAMS dbParams, Object& executeResult) at System.Data.OleDb.OleDbCommand.ExecuteCommandText(Object& executeResult) at System.Data.OleDb.OleDbCommand.ExecuteCommand(CommandBehavior behavior, Object& executeResult) at System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) at System.Data.OleDb.OleDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.OleDb.OleDbCommand.ExecuteReader() at AuctioneerProject.LandReport.load_Land() in C:\Users\admin\Desktop\Auctioneers\AuctioneerProject\AuctioneerProject\LandReport.vb:line 37 at AuctioneerProject.LandReport.PriceRadioButton_CheckedChanged(Object sender, EventArgs e) in C:\Users\admin\Desktop\Auctioneers\AuctioneerProject\AuctioneerProject\LandReport.vb:line 79 at System.Windows.Forms.RadioButton.OnCheckedChanged(EventArgs e) at System.Windows.Forms.RadioButton.set_Checked(Boolean value) at AuctioneerProject.LandReport.InitializeComponent() in C:\Users\admin\Desktop\Auctioneers\AuctioneerProject\AuctioneerProject\LandReport.designer.vb:line 40 at AuctioneerProject.LandReport..ctor() in C:\Users\admin\Desktop\Auctioneers\AuctioneerProject\AuctioneerProject\LandReport.vb:line 5 InnerException:

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• Possible uncommitted transactions causing "System.Data.SqlClient.SqlException: Timeout expired" erro

  - by Michael

  My application requires a user to log in and allows them to edit a list of things. However, it seems that if the same user always logs in and out and edits the list, this user will run into a "System.Data.SqlClient.SqlException: Timeout expired." error. I've read comments about increasing the timeout period but I've also read a comment about it possibly caused by uncommitted transactions. And I do have one going in the application. I'll provide the code I'm working with and there is an IF statement in there that I was a little iffy about but it seemed like a reasonable thing to do. I'll just go over what's going on here, there is a list of objects to update or add into the database. New objects created in the application are given an ID of 0 while existing objects have their own ID's generated from the DB. If the user chooses to delete some objects, their IDs are stored in a separate list of Integers. Once the user is ready to save their changes, the two lists are passed into this method. By use of the IF statement, objects with ID of 0 are added (using the Add stored procedure) and those objects with non-zero IDs are updated (using the Update stored procedure). After all this, a FOR loop goes through all the integers in the "removal" list and uses the Delete stored procedure to remove them. A transaction is used for all this. Public Shared Sub UpdateSomethings(ByVal SomethingList As List(Of Something), ByVal RemovalList As List(Of Integer)) Using DBConnection As New SqlConnection(conn) DBConnection.Open() Dim MyTransaction As SqlTransaction MyTransaction = DBConnection.BeginTransaction() Try For Each SomethingItem As Something In SomethingList Using MyCommand As New SqlCommand() MyCommand.Connection = DBConnection If SomethingItem.ID > 0 Then MyCommand.CommandText = "UpdateSomething" Else MyCommand.CommandText = "AddSomething" End If MyCommand.Transaction = MyTransaction MyCommand.CommandType = CommandType.StoredProcedure With MyCommand.Parameters If MyCommand.CommandText = "UpdateSomething" Then .Add("@id", SqlDbType.Int).Value = SomethingItem.ID End If .Add("@stuff", SqlDbType.Varchar).Value = SomethingItem.Stuff End With MyCommand.ExecuteNonQuery() End Using Next For Each ID As Integer In RemovalList Using MyCommand As New SqlCommand("DeleteSomething", DBConnection) MyCommand.Transaction = MyTransaction MyCommand.CommandType = CommandType.StoredProcedure With MyCommand.Parameters .Add("@id", SqlDbType.Int).Value = ID End With MyCommand.ExecuteNonQuery() End Using Next MyTransaction.Commit() Catch ex As Exception MyTransaction.Rollback() 'Exception handling goes here End Try End Using End Sub There are three stored procedures used here as well as some looping so I can see how something can be holding everything up if the list is large enough. Other users can log in to the system at the same time just fine though. I'm using Visual Studio 2008 to debug and am using SQL Server 2000 for the DB.

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• Passing a Table Valued parameter to a stored procedure

  - by cf_PhillipSenn

  Here's an example of how to use table-valued parameters in a SQL Server 2008 stored procedure using .NET. And here's the list of parameter types in CF9. Q: Is it possible for ColdFusion to pass a table-valued parameter to a Microsoft SQL Server 2008 stored procedure?

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• Is it possible to view the "source" for a ksh function?

  - by stevec

  Our ksh environment defines several functions, which can be listed using then "functions" ksh function. Is it possible to see the definition (ie source code) for these functions? This seems like an obvious question, but I've tried all manner of parameters to the "functions" and "function" functions with no luck. Thanks, Steve

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• How can I build multiple processes with TBB?

  - by Jackie

  Now I plan to parallelize my sequential solver. I hope I could run several copies of my solver(maybe with different parameters) in parallel simultaneously on a multi-core computer. can I do this with TBB? The reason I ask this question is that the book says: do not introduce anything in your code that will not allow single-thread execution. Any experts can explain this issue? Thanks.

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• Changing the order of arguments in ruby sprintf

  - by railscoder

  Is it possible to change the order of parameters to sprintf fun? like sprintf(" this is %arg[2] test %arg[1]" , arg1, arg2) i need to dynamically change the order of the arguments. so is that possible with sprintf?

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• Flash function overloading in haXe

  - by Voxl

  I am having some trouble figuring out how to overload a function in Flash using haXe. I know that Flash does not allow overloads but can accept function parameters without a type declared, but I am unsure as how to replicate this trick in haXe.

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• ASP.Net JSON Web Service Post Form Data

  - by Will D

  I have a ASP.NET web service decorated with System.Web.Script.Services.ScriptService() so it can return json formatted data. This much is working for me, but ASP.Net has a requirement that parameters to the web service must be in json in order to get json out. I'm using jquery to run my ajax calls and there doesn't seem to be an easy way to create a nice javascript object from the form elements. I have looked at serialiseArray in the json2 library but it doesn't encode the field names as property name in the object. If you have 2 form elements like this <input type="text" name="namefirst" id="namefirst" value="John"/> <input type="text" name="namelast" id="namelast" value="Doe"/> calling $("form").serialize() will get you the standard query string namefirst=John&namelast=Doe calling JSON.stringify($("form").serializeArray()) will get you the (bulky) json representation [{"name":"namefirst","value":"John"},{"name":"namelast","value":"Doe"}] This will work when passing to the web service but its ugly as you have to have code like this to read it in: Public Class NameValuePair Public name As String Public value As String End Class <WebMethod()> _ Public Function GetQuote(ByVal nvp As NameValuePair()) As String End Function You would also have to wrap that json text inside another object nameed nvp to make the web service happy. Then its more work as all you have is an array of NameValuePair when you want an associative array. I might be kidding myself but i imagined something more elegant when i started this project - more like this Public Class Person Public namefirst As String Public namelast As String End Class which would require the json to look something like this: {"namefirst":"John","namelast":"Doe"} Is there an easy way to do this? Obviously it is simple for a form with two parameters but when you have a very large form concatenating strings gets ugly. Having nested objects would also complicate things The cludge I have settled on for the moment is to use the standard name value pair format stuffed inside a json object. This is compact and fast {"q":"namefirst=John&namelast=Doe"} then have a web method like this on the server that parses the query string into an associate array. <WebMethod()> _ Public Function AjaxForm(ByVal q As String) as string Dim params As NameValueCollection = HttpUtility.ParseQueryString(q) 'do stuff return "Hello" End Sub As far a cludges go this one seems reasonably elegant in terms of amount of code, but my question is: is there a better way? Is there a generally accepted way of passing form data to asp.net web/script services?

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• Parameter layout

  - by 1passenger

  I have four parameters in my report. Now I want to configure the report to show only one parameter in every line. In this case I want to have 4 parameter rows. Is this possible?

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• Again, user config files C#

  - by George

  Hey guys. I have a large config file (user) that i needed to go to the right location and have some default values. Since i have a installer class, i added some parameter setting to the config file in it, but created the config files in the installers folder. What is the best way to ensure these default parameters will be written only once, and in the right location?

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• RESTful issue with data access when using HTTP DELETE method ...

  - by Wilhelm Murdoch

  I'm having an issue accessing raw request information from PHP when accessing a script using the HTTP DELETE directive. I'm using a JS front end which is accessing a script using Ajax. This script is actually part of a RESTful API which I am developing. The endpoint in this example is: http://api.site.com/session This endpoint is used to generate an authentication token which can be used for subsequent API requests. Using the GET method on this URL along with a modified version of HTTP Basic Authentication will provide an access token for the client. This token must then be included in all other interactions with the service until it expires. Once a token is generated, it is passed back to the client in a format specified by an 'Accept' header which the client sends the service; in this case 'application/json'. Upon success it responds with an HTTP 200 Ok status code. Upon failure, it throws an exception using the HTTP 401 Authorization Required code. Now, when you want to delete a session, or 'log out', you hit the same URL, but with the HTTP DELETE directive. To verify access to this endpoint, the client must prove they were previously authenticated by providing the token they want to terminate. If they are 'logged in', the token and session are terminated and the service should respond with the HTTP 204 No Content status code, otherwise, they are greeted with the 401 exception again. Now, the problem I'm having is with removing sessions. With the DELETE directive, using Ajax, I can't seem to access any parameters I've set once the request hits the service. In this case, I'm looking for the parameter entitled 'token'. I look at the raw request headers using Firebug and I notice the 'Content-Length' header changes with the size of the token being sent. This is telling me that this data is indeed being sent to the server. The question is, using PHP, how the hell to I access parameter information? It's not a POST or GET request, so I can't access it as you normally would in PHP. The parameters are within the content portion of the request. I've tried looking in $_SERVER, but that shows me limited amount of headers. I tried 'apache_request_headers()', which gives me more detailed information, but still, only for headers. I even tried 'file_get_contents('php://stdin');' and I get nothing. How can I access the content portion of a raw HTTP request? Sorry for the lengthy post, but I figured too much information is better than too little. :)

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• Get address bar without paramentrs.

  - by kalininew

  Help me please get the value of the address bar of browser without the parameters passed. Without the use of regular expressions and string functions. You can do this? (I use php on apache). enter http://dev.mazda-parts.ru/catalogue/?spattern=1 exit http://dev.mazda-parts.ru/catalogue/

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• File Open/Save Dialog

  - by Md. Rashim Uddin

  I'm trying to browse a directory in File Open/Save dialog. I could able to get the handle of common dialog as well as its control window. But I don't know how to provide a filename and click the Save/Open button to Save/Open a file. I couldn't find the SendMessage parameters needed to perform these actions. Any suggestions?

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• Naming Suggestions For A Function Providing Method Chaining In A Different Way

  - by sid3k

  I've coded an experimental function which makes passed objects chainable by using high order functions. It's name is "chain" for now, and here is a usage example; chain("Hello World") (print) // evaluates print function by passing "Hello World" object. (console.log,"Optional","Parameters") (returnfrom) // returns "Hello World" It looks lispy but behaves very different since it's coded in a C based language, I don't know if there is a name for this idiom and I couldn't any name more suitable than "chain". Any ideas, suggestions?

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• asp.net not deserializing soap response

  - by Tanya

  Hi all, I have been given a wsdl and have used wsdl.exe to create my proxy classes. I am able to call the function to initiate the request with some valid parameters and this returns my response object which is always EMPTY. When i inspect the soap message response using fiddler the soap does have valid data that should be deserialzed to the proxy classes. Can i manually intercept the derserializing call of the proxy classes generated by wsdl and check that .net is correctly derializing the soap response? Thank you

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• Castle Windsor: Setting a parameter value to an empty string.

  - by Austin Salonen

  How can I allow one of my string parameters to be an empty string? I get this error when I try either nothing or a single space (names changed): Could not resolve non-optional dependency for 'test.User' (MyNamespace.MyObject). Parameter 'userName' type 'System.String'

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• C# AcroPDFLib Scrollbar/Zoom position

  - by zee

  Hello, I'm trying get and set the "ZoomScroll" of a AcroPDFLib Control. axAcroPDF1.setZoomScroll(150, 300, 300); works but there is no function to get that 3 parameters. Only getting the scrollpos like in a textcontrol doesn't work, too: scrollpos = GetScrollPos(axAcroPDF1.Handle, (int)ScrollBarType.SbVert); Please help

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• Function lfit in numerical recipes, providing a test function

  - by Simon Walker

  Hi I am trying to fit collected data to a polynomial equation and I found the lfit function from Numerical Recipes. I only have access to the second edition, so am using that. I have read about the lfit function and its parameters, one of which is a function pointer, given in the documentation as void (*funcs)(float, float [], int)) with the help The user supplies a routine funcs(x,afunc,ma) that returns the ma basis functions evaluated at x = x in the array afunc[1..ma]. I am struggling to understand how this lfit function works. An example function I found is given below: void fpoly(float x, float p[], int np) /*Fitting routine for a polynomial of degree np-1, with coe?cients in the array p[1..np].*/ { int j; p[1]=1.0; for (j=2;j<=np;j++) p[j]=p[j-1]*x; } When I run through the source code for the lfit function in gdb I can see no reference to the funcs pointer. When I try and fit a simple data set with the function, I get the following error message. Numerical Recipes run-time error... gaussj: Singular Matrix ...now exiting to system... Clearly somehow a matrix is getting defined with all zeroes. I am going to involve this function fitting in a large loop so using another language is not really an option. Hence why I am planning on using C/C++. For reference, the test program is given here: int main() { float x[5] = {0., 0., 1., 2., 3.}; float y[5] = {0., 0., 1.2, 3.9, 7.5}; float sig[5] = {1., 1., 1., 1., 1.}; int ndat = 4; int ma = 4; /* parameters in equation */ float a[5] = {1, 1, 1, 0.1, 1.5}; int ia[5] = {1, 1, 1, 1, 1}; float **covar = matrix(1, ma, 1, ma); float chisq = 0; lfit(x,y,sig,ndat,a,ia,ma,covar,&chisq,fpoly); printf("%f\n", chisq); free_matrix(covar, 1, ma, 1, ma); return 0; } Also confusing the issue, all the Numerical Recipes functions are 1 array-indexed so if anyone has corrections to my array declarations let me know also! Cheers

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• Stack Overflow Exploit in C

  - by Fernando Gonzalez

  Hey there guys, the question is actually about stack overflows in C. I have an assigment that I can not get done for the life of me, i've looked at everything in the gdb and I just cant figure it. The question is the following: int i,n; void confused() { printf("who called me"); exit(0); } void shell_call(char *c) { printf(" ***Now calling \"%s\" shell command *** \n",c); system(c); exit(0); } void victim_func() { int a[4]; printf("[8]:%x\n", &a[8]); printf("Enter n: "); scanf("%d",&n); printf("Enter %d HEX Values \n",n); for(i=0;i<n;i++) scanf("%x",&a[i]); printf("Done reading junk numbers\n"); } int main() { printf("ls=736c --- ps = 7370 --- cal = 6c6163\n"); printf("location of confused %x \n", confused); printf("location of shell_call %x \n", shell_call); victim_func(); printf("Done, thank you\n"); } Ok, so I managed to get the first question correctly, which is to arbitrarily call one of the two functions not explicitly called in the main path. By the way, this has to be done while running the program without any modifications. I did this by running the program, setting N to 7, which gets me to the Function Pointer of the victim_func frame, I write a[7] with the memory address of confused or shell_call, and it works. (I have a 64 bit machine, thats why I have to get it to 7, since the EBI pointer is 2 ints wide, instead of 1) My question is the following, how could I control which argument gets passed to the shell_code funcion? ie. how do i write a string to char* c. The whole point is executing unix commands like "ps" etc, by running only the program. I figured writing the EBI pointer with the hex representation of "ps" and setting the arg list of shell_call to that, but that didn't work. I also tried inputing argsv arguments and setting the arg list of shell_call to the arg_list of main, but didnt work either. I think the second version should work, but i believe im not setting the arg list of the new stack frame correctly ( I did it by writing a[8] to 0, since its the first part of the functin pointer, and writing a[9]=736c and a[10]=0000, but its probably not right since those are the parameters of victim_func. So how do i access the parameters of shell_call?

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• how can I create a list of classes in C3 to itterate over in a loop

  - by Jean-Bernard Pellerin

  example: Suppose I have class animal And classes cat and dog extending it I want to do something along the lines of foreach (animal a in {cat, dog}) if (a.isValid(parameters)) doStuff(); (couldn't get the code formatting to work) my only alternative is a switch statement for each class, something I'd like to avoid Thanks, J-B

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• how to find selected elements with Jquery UI selectable

  - by kevzettler

  Hi All, I am looking for info on the event and ui objects the jquery selectable events: "selecting", and "start" take as parameters. I cannot find this in the documentation and looping through the properties is no help. $('#content_td_account').selectable({ filter: 'li:not(".non_draggable")', selecting: function(event, ui) { } }); Specifically I want to find what elements are being selected and check them to see if their parent elements are the same or not. I assumed this would be in the ui object some where.

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• Help with ASP.NET 4.0 routing and subfolders

  - by pixel3cs

  If I use routing with 2 query parameters, like this: System.Web.Routing.RouteTable.Routes.MapPageRoute("HomeRoute", "home/{f1}/{f2}", "~/Home.aspx"); My image does not appear on my Home.aspx page: <img src="~/img/img.jpg" /> or <img src="img/img.jpg" /> But it does appear when I access the http://localhost:3760/Website/Home.aspx URL I tried using Routing.Ignore with no luck. I look for a solution wich should work for an unlimited number of subfolders: "home/{f1}/{f2}/.../{fn}"

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• Ajax problem not displaying data using multiple javascript calls...

  - by Ronedog

  I'm writing an app that uses ajax to retrieve data from a mysql db using php. Because of the nature of the app, the user clicks an href link that has an "onclick" event used to call the javascript/ajax. I'm retrieving the data from mysql, then calling a separate php function which creates a small html table with the necessary data in it. The new table gets passed back to the responseText and is displayed inside a div tag. The tables only have around 10-20 rows of data in them. This functionality is working fine and displays the data in html form exactly as it needs to be on the page. The problem is this. the HREF "onclick" event needs to run multiple scripts one right after the other. The first script updates the "existing" data and inside the "update_existing" function is a call to refresh a section of the page with the updated HTML from the responseText. Then when that is done a "display_html" function is called which also updates a different section of the page with it's newly created HTML table. The event looks like this: Update This string gets built dynamically using php with parameters supplied, but for this example I simply took the parameters out so it didn't get confusing. The "update_existion() function actually calls the display_html() function which updates a section of the page as needed. I need to update a different section of the page on the same click of the mouse right after the update, which is why I'm calling the display_html() again, right after it. The problem is only the last call is being updated on my screen. In other words, the 2nd function call "display_html()" executes and displays the refreshed data just fine, but the previous call to update_existing() runs and updates the database properly, but doesn't display on the screen unless I press the browsers "refresh" button, which of course displays the new data exactly how I want it to, but I don't want the users to have to press the "refresh" button. I tried adding multiple "display_html() calls one right after the other, separating all of them with the semicolon and learned that only the very last function call actually refreshed the div element on the html page with the table information, although all the previous display_html() calls worked, they couldn't be seen on the page without a refresh of the browser. Is this a problem with javascript, or the ajax call, or is this a limitation in the DOM that only allows one element to be updated at a time. The ajax call is asynchroneous, but I've tried both, only async works period. This is the same in both Firefox and Internet Explorer Any ideas what's going on and how to get around it so I can run these multiple scripts?

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• Is it possible to easily convert SqlCommand to T-SQL string ?

  - by Thomas Wanner

  I have a populated SqlCommand object containing the command text and parameters of various database types along with their values. What I need is a T-SQL script that I could simply execute that would have the same effect as calling the ExecuteNonQuery method on the command object. Is there an easy way to do such "script dump" or do I have to manually construct such script from the command object ?

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• NPGSQL seems to have a rather large bug?

  - by Mr Shoubs

  Hello, this is a weird one, when I run the following code all rows are returned from the db. Imagaine what would happen if this was an update or delete. Dim cmd As New NpgsqlCommand cmd.Connection = conn cmd.CommandText = "select * FROM ac_profiles WHERE profileid = @profileId" cmd.Parameters.Add("@profile", 58) Dim dt As DataTable = DataAccess2.DataAccess.sqlQueryDb(cmd) DataGridView1.DataSource = dt My question is why is this happening?

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