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  • How to insert a DataTable with existing Key to a SQL Server Table.

    - by user296575
    I am working with VB.NET.. i have a DataTable called "QUESTION", containing 3 fields: QuestionNumber (unique integer key) QuestionText QuestionType In my SQL Server database I created a Table called "QUESTION" with the same fields. QuestionNumber is defined as integer unique key, auto increment Now, when i make a bulk copy to insert the DataTable into the SQL Server, the database overwrites my QuestionNumber from the DataTable and generates new ones (starting from 1 increment 1). How do i have to change my database setup, that the original QuestionNumbers are copied into the database?

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  • Qt Program depoly to multi platform, how?

    - by coderex
    Hi, Am new in Qt Programming and i would like to develop a program which i want to run in Windows, Linux(ubuntu), and Mac. I heard that Qt support mutli-platform application development, but my Question is that, would any Qt library need to run these appilication in Ubuntu after i depolyed or compiled. Or

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  • Conditional or in C#

    - by vikitor
    Hello, I've been programming in JAVA and C all my years at Uni, but now I'm learning C# and building a small application, and I've found troubles with this: if (taxonType.Equals(null) ¦¦ taxonID == -1) I get a red underline for this conditional, and I don't really know why, because according to what I've seen that should be ok, but it is not. Is there something I'm missing? thank you all in advance, Victor

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  • VS 2008 debugger displays integers in hex

    - by Assaf
    Hi Guys, For some reason my Visual Studio debugger has started to show me my integers in Hex. I am programming ASP.net using C#. Does anyone have an idea how can I convince the debugger to display integers in decimal again? Thanks a lot, Assaf.

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  • Help understanding how to make a bar chart using ggplot2

    - by celenius
    I'm trying to use the bar_geom function of ggplot2, but I can't understand how to use it. I've made a small sample of my code to show what I am trying to do: library(ggplot2) # sample data sampleData = data.frame( v1=c('a','b','c','d','e', 'f','g', 'h', 'i','j'), v2=c(1:10) ) sampleData$Names = data.frame( Names = paste(sampleData$v1, sampleData$v2, sep="") ) sampleData$Values = c(1:10) # make plot x = sampleData$Values y = sampleData$Names qplot( x, y, data = sampleData, geom="bar" ) I want sampleData$Names to be on the x-axis of my graph, labeling each bar and and sampleData$Values to scale the bar height. I want the y-axis to be specified as a range. I realize that I don't understand how ggplot2 functions as this small example does not work, yet my other example is generating a plot but I cannot specify a y-range as it considers the variables to be categorical.

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  • Light-weight client/server DB?

    - by OverTheRainbow
    Hello, (This question falls between programming and finding a tool, so I guess I'll ask here in SO since it has more activity than SuperUser.) I like the simplicity of SQLite, but by design, it doesn't support concurrent access. The apps I write don't have heavy needs, so I'd like to avoid heavier solutions like MySQL that are more difficult to deploy (remote customers with usually no computer personnel). Does someone know of a good solution that would offer the following features? Client available for VB.Net applications The server itself doesn't have to be a .Net application. Actually, I'd rather a bare-metal server so that it can run even on embedded Linux hosts with less RAM/CPU than regular PC's Easy install: the client part should either be statically linked inside the client application or be available as a single DLL, and the server should just be a single EXE listening for queries, à la Fossil (http://www.fossil-scm.org) clients can locate the server on the LAN by broadcasting data picked up by the server, so users don't have to write down the IP address and paste it into each client open-source, or moderately priced closed-source Thank you.

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  • How can I create a new branch in git from an existing file tree?

    - by pkaeding
    I am looking to add an existing file tree to a git repository as a new branch (I can't just copy the existing tree into my git tree, since the existing tree is versioned under a different VCS, and I am trying to sync them up). Is this possible? EDIT: Would setting up a new git repository, that is connected to the existing remote repository, and then moving the resulting .git folder work? That seems really hackish, but if that's the way to do it...

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  • Python Mindstorms RCX

    - by Kyle Schmidt
    I've got 30 unopened Lego Mindstorms kits that I'd love to use in my intro programming class to do some simple robotics stuff at the end of the year. We're using Python in the class, so I'd prefer there to be a way for the kids to write the programs in Python. Unfortunately, these are old kits with RCX bricks - not the newer NXT ones, so most of the projects like NXT_Python can't help me. Is there any way to make that happen?

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  • Getting started with F#

    - by Ian Quigley
    What's a good way to get into F# programming? What's a good "Hello world" example and what simple examples can show me why I want to use it over C#. Also what tools do I need? I have WindowsXP, Visual Studio 2008 etc.

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  • Linux Device Driver: Symbol "memcpy" not found

    - by Hinton
    Hello, I'm trying to write a Linux device driver. I've got it to work really well, until I tried to use "memcpy". I don't even get a compiler error, when I "make" it just warns me: WARNING: "memcpy" [/root/homedir/sv/main.ko] undefined! OK and when I try to load via insmod, I get on the console: insmod: error inserting './main.ko': -1 Unknown symbol in module and on dmesg: main: Unknown symbol memcpy (err 0) I include the following: #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/kernel.h> /* printk() */ #include <linux/slab.h> /* kmalloc() */ #include <linux/fs.h> /* everything... */ #include <linux/errno.h> /* error codes */ #include <linux/types.h> /* size_t */ #include <linux/fcntl.h> /* O_ACCMODE */ #include <linux/cdev.h> #include <asm/system.h> /* cli(), *_flags */ #include <asm/uaccess.h> /* copy_*_user */ The function using memcpy: static int dc_copy_to_user(char __user *buf, size_t count, loff_t *f_pos, struct sv_data_dev *dev) { char data[MAX_KEYLEN]; size_t i = 0; /* Copy the bulk as long as there are 10 more bytes to copy */ while (i < (count + MAX_KEYLEN)) { memcpy(data, &dev->data[*f_pos + i], MAX_KEYLEN); ec_block(dev->key, data, MAX_KEYLEN); if (copy_to_user(&buf[i], data, MAX_KEYLEN)) { return -EFAULT; } i += MAX_KEYLEN; } return 0; } Could someone help me? I thought the thing was in linux/string.h, but I get the error just the same. I'm using kernel 2.6.37-rc1 (I'm doing in in user-mode-linux, which works only since 2.6.37-rc1). Any help is greatly appreciated. # Context dependent makefile that can be called directly and will invoke itself # through the kernel module building system. KERNELDIR=/usr/src/linux ifneq ($(KERNELRELEASE),) EXTRA_CFLAGS+=-I $(PWD) -ARCH=um obj-m := main.o else KERNELDIR ?= /lib/modules/$(shell uname -r)/build PWD = $(shell pwd) all: $(MAKE) V=1 ARCH=um -C $(KERNELDIR) M=$(PWD) modules clean: rm -rf Module.symvers .*.cmd *.ko .*.o *.o *.mod.c .tmp_versions *.order endif

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  • specifying classpath for built-in ant tasks

    - by carneades
    I use the classpath attribute in custom Ant tasks to tell Ant where to find the external task jar, but how do I do the same for built-in tasks? In my case I'd like to make sure ant uses my copy of jsch.jar for the scp task, and not one that my already be installed on the system. Is there any way I can <scp> while guaranteeing it's using my jsch.jar?

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  • Licencing: release the same software with double licence

    - by Luca
    In my free time, I develop (alone, sigh) a project, in particoular an application library. I've released it using GPL v3. At this time, this project has come very useful for a job. I'd like to release my OSS library toghether with the application using the same GPL v3 licence, with the exception that it can be linked for the specific application, or for the specific application vendor. AFAIK, the copyright owner can handle the entire source and licencing it, I did it; and probably the licence owner could cut&paste its own code, change its licence and use for other projects, isn't? But an GPL'ed library cannot be linked with a proprietary software, right? But software could be double-licenced, as MySQL does. So the question is: what should I do to allow the distribution of my GPL'ed library with a proprietary software, being the copyright owner?

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  • .NET custom form designer: How to implement IMenuCommandService?

    - by jonny
    I've got a report form designer written long ago for a database project. It used a lot of winapi magic hence i was forced to rewrite some parts 'in proper way'. Thanks to some articles from MSDN magazine (here and here) and CodeProject i was able to implement designer surface, toolbox and undo/redo engine. Every resource i discovered on the topic so far is a bit outdated. Can you point to fresh/comprehensive article? Code from article mentioned above seems not working. MenuCommandService.ShowContextMenu is called but nothing appears since there aren't any DesignerVerbs in globalVerbs collection. Should i add 'standard' ones, corresponded to designer actions such as cut/paste, manually? If yes, how can i accomplish this?

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  • how to use an mdf in App_Data with shared hosting

    - by name
    If I create a website that uses an mdf in App_Data with the connection string: Server=.\SQLExpress;AttachDbFilename=|DataDirectory|mydbfile.mdf;Database=dbname; Trusted_Connection=Yes; what do I need to do to run the site in a shared hosting environment? Do I need to copy the contents of my mdf to the main SQL Server engine of my host? Is there a way to use the non-SQLExpress engine of my host and still keep my mdf in my App_Data?

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  • C# Calendar Object on top

    - by contactmatt
    Hi programming some C# in a form with a bunch of group boxes. I have a two Calendar controls that when called upon, are partially invisible due to surrounding group boxes. this.grp_TransactionDetails.Controls.Add(this.cal_Ctrl); this.grp_TransactionDetails.Controls.Add(this.cal_Batch); Any ideas? (I wish there was a z-index property)

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