C#.net user control in VB6

Question

I have created a simple usercontrol in c# . It consist of three textboxes.

I have written a method in usercontrol to set the values in these textboxes

public partial class Win : UserControl

{

public Win()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

textBox3.Text = textBox1.Text + textBox2.Text;

}

public void CalVal()

{

textBox1.Text = "My";

textBox2.Text = "Name";

textBox3.Text = "Neeraj";

}

}

 

It is successfully registered as COM component .

When i use it in VB6 i am not able to set the values in these textboxes

 

Dim objControlNew As Try.Win

 

Private Sub Command2_Click()

  Dim str As String
    Dim strnew As String

  Set objControlNew = New Try.Win

  Me.Controls.Add objControlNew, "dotnet"
    Me.Controls("dotnet").Visible = True
    objControlNew.CalVal
  End Sub

 

I am just calling the method , values are set from usercontrol , but i am not able to see the values in the textboxes.

Please help if anyone know the solution

Answer 1

The scenario you're trying is actually unsupported unless you use the Interop Toolkit 2.0 (http://msdn2.microsoft.com/en-us/vbasic/bb419144.aspx).  The templates for that are only in VB, but someone posted a C# translation over at CodeProject: http://www.codeproject.com/useritems/VB6InteropToolkit2.asp.

 

If you're building your .NET component in VB it's as simple as using the ComClass attribute; if you're using C# there's some extra work involved.  Check out http://blogs.msdn.com/vbteam/archive/2007/06/01/so-what-does-lt-comclass-gt-actually-do.aspx for more info.

 

Hope that helps,

 

Jonathan

Answer 2

hello neyon
 
Im naren.i need to crete a text box usercontrol in windows application using c#.net same time how i can drag the textbox in user area.can any one help to me.

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Naren

Answer 3

@Naren7:
Not sure if this is relevant, but here goes:

If you are using the control in C# (MyControl for example), you can instantiate the control directly in code:

MyControl txtControl = new MyControl();
txtControl.Parent = this;
txtControl.Size = new Size(20, 60);
txtControl.Location = new Point(5, 5);
txtControl.Text = "";

Take a look at exactly what InitializeComponent() does in your form's constructor. That's what instansiates all the controls that you drag onto the form designer.

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