Link Datagridviews To Other Controls Like A Combobox, List View Or Even Another DatagridviewBecause Much Of The Code Is Managed By The IDE?
May 18, 2008
figure out a way to link datagridviews to other controls like a combobox, list view or even another datagridviewBecause much of the code is managed by the IDE, I was expecting an IDE approach to linking controls. Is this the case or do I have to modify the generated code to do what I want.An example would be to use a combobox to limit the number of entries in a datagridview etc
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Jun 5, 2009
how to open a "data link properties" dialog using manged code
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Jul 13, 2009
I am trying to write the code needed to link two tables together. One table is a list box and the other table is a data grid view. What would the example of the code needed in order to link these tables together so that each time you click on an item in the list box, the data grid would then show the corresponding information that matches up with the selected item.
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Jul 1, 2010
I'm trying to fill a ListView control in a VB2005 project. It works fine from underpinning (Access) database IF all the data is present. However, if a field is blank (in this case - a field called "Actual Date" which is meant to be blank for this record), the ListView will stop populating at that point.I thought this may have been the 'CausesValidation' property of the ListView but that doesn't seem to change the behaviour.Is this an inherent feature of the ListView - if so it seems daft - or is there a property I need to change or an override that I need to code?
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Oct 14, 2010
I just want to display data in a DataGridView (from SQL - already made the connection) based on what is selected in a ComboBox (data that is also coming from SQL). The 2 are separete on the form. I am using VB 2010.
This doesn't work for me:
objCommand2.CommandText = "SELECT ProductID, Name, Color, Size, ListPrice FROM SalesLT.Product WHERE ProductCategoryID = " & cbCategory.SelectedValue
[code].....
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Aug 12, 2011
change font in datagride view combobox popup list?
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May 6, 2009
I have an VB.NET application that you can feed in using a file or other means a bunch of Website URL's and using six Web Browser Controls launched on separate threads navigate to and then images are captured. Almost instantly the Working Set Size accelerates to 1GB and continually rises as the process progresses until it flat out exhausts memory, of course it's a memory leak.
While watching the Performance monitor CLR managed memory is reasonably low and is being managed properly "cleaned up" as you would expect - Gen0,1,2 are reasonably empty. BUT non managed NET storage is out of control. So my question is: Web Browser controls are NET ActiveX objects... is storage ever allocated for them outside of CLR? And since they are really components of IE does their usage somehow require IE to generate and allocate storage outside of CLR. That is to say using a Web Browser control is just an API for the real the IE full browser and that does allocate storage in a non CLR managed address space.
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Apr 14, 2009
I have a product table with ProductId,ProductName,ProductCode as fields. I've populated a combobox with productnames. Next I have two other tables called Result_Header and Result_Detail. The Result_Header table has ProductId as a foreign key and BatchNo,TestDate etc. The Result_Detail table has ResultId as a foreign key which is the ResultHeaders Primary Key and other fields such as Result,SpecHi etc. What I need is when I select a Product from my combobox my two datagridviews must be populated via the Result_header and Result_detail tables respectively.
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Apr 10, 2009
Is it possible to start another EXE in Managed Code? At this time, all I can do is use:
System.Diagnostics.Process.Start(exeName)
Is there another way to call another EXE within the same project?
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Mar 12, 2008
I get some very generik trouble need to implement List View with Image in SubItem. All can be very fine ....But I need to use Virtual Mode. Whatever I search I haven't still found working solution's. I have found some C# code that seem's do that. But I can't convert it in VB.Net. let's explain detaly.
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Apr 7, 2011
I have a .Net application (VB in particular, although I would this to be as language agnostic as possible) that uses a COM object (made in C++). I need to implement a event in COM that passes a char array from C++ to .Net. I guess I need to convert the array to a managed array; How can I do this?
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Sep 19, 2010
I am trying to develop a dll in VisualStudio2005 in vb.net that will communicate with a spectrometer attached to the USB port of the computer.Now the dll exists in C++ and it works like a charm. It is unmanaged code.Now if I try to translate this code in VB.net (because our app is in VB and my boss wants it in VB for maintainability) I have problems.
First of all, I am trying to create a file to open that port. The code in C++ looks like below and it works. Needles to say I tried to call the C++ dll from our app and it works. If I call the vb dll it doesn't. It gives me "access denied" no matter what I tried. I am not sure if my CreateFile is wrong or it's .net. I read somewhere that I need a manifest file included in the dll? Has anyone experience something like this? Why would i get "ACCESS DENIED" all the time?
// close and clear current stuff
ClosePort();
swprintf( sDevice, L"\\?\usb#vid_0765&pid_%s#******#{%s}", Device, PRIVATE_IID_STR );
[code].....
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May 30, 2012
I need to write a DLL in C that is used a plugin for an existing application.The DLL has to be compiled by the Visual Studio 2008 compiler with the following options.[code]It's then linked to applications library's.What it actually needs to do and what's causing me the issues is that within one of the methods it needs to pull data from a sql server 2008 r2. From what I've seen today you wouldn't be able to do this directly in C as SQL Server past 2005 is designed to communicate with CLR languages( C#, C++, VB.Net).It was suggested that I handle all the database communication with a VB.Net dll and then call said function from within the C dll. Most of what I've found on the topic of calling managed dll's from unmanaged code has talked about pinvoke or com wrappers and mainly from the perspective of c++.
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Jan 24, 2010
How to identify the x64 or x86 of the OS and a Process in managed code?
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Feb 19, 2010
I am having a problem marshaling data between managed and unmanaged code. So I need to inspect the data at the byte level. What I need to do is store a number, say 8 into a 4-byte integer then copy it to an array bytArray(4) and compare those bytes with other data. I also need to set up the same array and copy it to an integer variable.
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Feb 8, 2012
I have a link here that works perfect for calling the postback close that I need to happen:
<a href="javascript:parent.__doPostBack('Close','')"><asp:Label ID="Label5" runat="server" Text="Close Me"></asp:Label></a>
However, I would like to be able to call the *javascript:parent.__doPostBack('Close','')* method from the code-behind file rather than the user clicking the link. I.e., when I have completed my tasks in the application code, call parent.doPostBack as my last function call, which closes the window in question.
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Feb 26, 2011
i am using directx in my form but my program cant load managed direct(i instal Microsoft SDK V 9.29.1962.0) AND SHOW THIS ERROR:
Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately.Mixed mode assembly is built against version V1.1.4322" of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information.
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Nov 8, 2011
If I have the following ListView, how can I attach a SelectedIndexChanged event listener to the DropDownList so I can perform a command on the respective object? Imagine I have a list of new users and I want to add them to a usergroup by selecting the group from the DropDownList.
<asp:ListView ID="NewUsers" runat="server" DataSourceID="NewUsersSDS" DataKeyNames="ID">
<LayoutTemplate>
[Code].....
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Aug 19, 2011
I'm trying to create a Combobox List and I created the following my first try:
Private Sub ComboBox1_DropButtonClick()
ComboBox1.List = Array("LI-3:comparing and contrasting two or more print sources based on
[code].....
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Jun 9, 2009
the VB .net experts. I added the following code and I get an error as shown below.
[CODE]....
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Dec 29, 2009
I want to develop a tree view and list view form by using vb6, how to construct a tree view and list view form?
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May 30, 2012
how to view explorer in list view control?
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Jun 22, 2010
I'm nearly finished making a blackjack game for my first year assignment in college using Visual Basic. The game is running ok, I'm happy with that but I am having one small issue! In the frmMain I have a counter set up so it counts and displays the number of games won and lost. From the drop down menu in the frmMain I have a Statistics option which opens another Form which I want to display the stats from the frmMain....How do I view the result on a different form?!?
I've tried the following code in the 2nd form...
Private Sub txtSessPlay_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtSessPlay.TextChanged
frmMain.txtPlayer2.Text.ToString()
End Sub
I've also tried the following code in frmMain...
dealerCount = stats.txtSessDeal.Text.ToString()
dealerCount is the variable set to count the statistics and stats is the name of the second form...
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Jul 28, 2010
I have a grid view control on page where there is a Link Button Column. I have written a Onclick event for that.On click event of Link Button the gridview is beind updated. I added the gridview inside an updatePanel.Now the postback events are not working .
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Jun 11, 2009
I have created an application which will open a text file on the click of a button, when i am running the application in local, I am able to get the popup asking to open or save the text file, I uploaded the same code to live site there it is not displaying the popup to open or save the text file. It just flashes a window for fraction of seconds and then closes, user is not able to perform any action in that course of time. Text document which I am trying to open is available at both server and local, and path is also correct in both cases.
Below is the code I am using to open the text file:
If (File.Exists(strFolderPath & "" & strFileName)) Then
objFileStream = New FileStream(strFolderPath & "" & strFileName, FileMode.Open, FileAccess.Read)
objStreamReader = New StreamReader(objFileStream)
objStreamReader.BaseStream.Seek(0, SeekOrigin.Begin)
[Code] .....
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Jul 24, 2009
I am loading a series of JPG images into an image list then using that to fill a list view. My program is using ALOT of memory by doing this. What would be the easiest way to add the images but take up less memory/time?
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Feb 7, 2009
How do I link my ComboBox (Which Contains Folders) to show the relevant files in my list view.
Dim myDir As New System.IO.DirectoryInfo(My.Settings.FolderPath)
For Each myFol As System.IO.DirectoryInfo In myDir.GetDirectories("*.*")
FoldersComboBox.Items.Add(myFol.Name)
[code].....
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Dec 16, 2011
I am writing the following code on the rowdatabound of the grid view and i am not getting the click event of link button..[code]
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Jun 17, 2011
I am new to vb.net and I am using visual studio 2010. I have two comboboxes on a form, each combobox is set to DropDownList so that a list of items can show in the combobox, but no text is allowed to be entered.
For combobox A, if user chooses item 1, the list of combobox B should be updated accordingly. I think this is quite common on a lot of applications. But I do not know to implement it. I even do not know the keyword to search for the relevant property or event handler.
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Dec 10, 2009
I have a datagridview for the transactions table. On the datagridview there is a combobox column for the type id field in the transactions table. This combobox displays the transaction type name from the transaction types table and puts the transaction type id into the transactions table. That much is okay. But each transaction type belongs to one of several categories. I have a categories table. The category id field in the transaction type record points to the id of the categories table. The category id is not in the transactions table, it is in the transactions types table. I need to know how to link the categories combo box on the datagridview to the category id in the transactions types combobox, which isn't even there right now. At present the transaction types combobox does not display the category id. It displays the transactions type name. Do I need to add another combobox to link the categories combo to the types combo?
I need to have it first and foremost so it will display the correct category when existing records are pulled up. I think I could do this with a join to the transactions type table in the categories combobox. But that wouldn't cause the transaction type combo to filter by category when a new entry is made.
Can someone advise as to the correct way to link comboboxes in this type of heirarchy?
I am using VB.NET 2008 and an Access database.
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