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FileDialog filter makes response slow

When I add a simple filter to a openFileDialog, it can take several seconds to respond following the selection of a single file.Here is the code:openFileDialog1.Filter = "Runtime parameters...

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Override default MDI behavoir

Hi. I am creating an application (primarily in C#), with MDI child windows. What I would like to do, is to override the default behavior that makes a newly createad child form maximized if the topmost...

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Need help converting old .Net exe to project and .net 4.0

I have been tasked with recovering an old winforms project for which the project files are lost. I have the database, and the app is still in use.I used Telerik's JustDecompile to look into the exe. I...

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raise event asyncronously on the same thread

I am using vb.net 3.5 formsI need to raise an event ascynronously from the UI thread to the UI thread.  I need it to behave like a button click, timer tick or backgroundworker completed eventI neet the...

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counting number of times a record appear in vb.net datagridview column

hii have datagridview on my form which is filled with data from an sql database. part of my datagridview  is shown below:patientID    Name         Gender        Age         1           kofi...

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GDI+ and Multithreading

Does anyone know the guts of GDI+ enough to know why certain independent GDI+ operations are unable to execute in parallel, such as: Thread1Graphics.FillRectangle Thread2Graphics.FillRectangle The...

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"Directory name is invalid" when install driver

Hi all,I try install google ADB driver from device manager, but I find in some computer the device manager will show ""Directory name is invalid"" and installation is failed. (The driver works fine in...

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Trying to pass data object between 2 forms using constructor in C#

I'm trying to pass the string 'IDdateOfBirth' from the class 'ApplicationForm' to 'IDForm' and insert it into a richtextBox but my constructor doesn't seem to be passing it as it still says 'IDdob...

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how to implement group chat in windows form application?

i need to get  chat option between users when users click on group chat button and also show who are online in windows form application? please help me out sir...   

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Multiple shortcut keys

I'm using this technique to register global hotkeysI'm using CTRL+T for my application but I also want:CTRL+NCTRL+OCTRL+SCTRL+FCTRL+PCTRL+HCTRL+JF1F12Each for different things, how do I do multiple...

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The label 'Count' has already been declared. Label names must be unique...

Dear Friends,Im inserting multiple values from a screen on button click event, but im getting below error multiple times.. The label 'Count' has already been declared. Label names must be unique within...

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Win 8 Pro Key

How do I go about activating my copy of Win 8 Pro x64?  Where do I find my Key?Link?Thanks,

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Background thread crashes the entire application?

I'm making a call to the MODI DLL (Ms Office Document Imaging) for purposes of OCR. My concern is with corrupt images. The call was crashing my WinForms app so I tried putting it on a thread, hoping...

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C# PictureBox image toggle help required.....

Hi,I am a complete novice on C# and i'm trying to learn as i go but i'm running into a problem.Background:I have an Arduino outputting a '1' & '0' every 2 seconds over the serial bus. I have a form...

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Using Arrays with Classes

Hi, I have the following code that will search through Active Directory and return users to a DataTable.string[] rowArrary = new string[userProperties.Length]; foreach (SearchResult searchResult in...

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WebBrowser control not rendering some controls for larger DPI

Hi all,I am having an issue with a webBrowser control that I am using in one of my programs. I am using a WebBrowser control to load a web page from my application (it is an outlook add-in - I do not...

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HexCalcChar

How would I get the button stand on top of other buttons when it is clicked on. I have a form with a button for every character on the computer when I click on a button it gets big but stands behind...

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VSTO Word addin , doesn't show winform form.

I have a vsto Word addin with one form. The problema is that it only show the Windows when I'm debuging, but after install my addin if hit hte button, the form doesn't appear.I suspect that is...

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Quaternions and WPF rotation

Hello awesome people, long story short. I have an 9-axis IMU that output quaternions and I would like to display that rotation on a 3D cube in WPF(C#). Any good websites for that?

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CopyFromScreen not capturing entire desktop on Windows 8

I am developing an application for Windows 7 and thinking about migrating to Windows 8. The problem is that when using CopyFromScreen for my screen capture operation, I'm noticing it does not capture...

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