disable selection and context menu for a single column in datagrid view

[sohaib_a]

I have a datagrid view with two columns.There is a context menu which should be disabled when i click on any cell in the second column and also selection should be disabled. I tried to do this by setting context menu properties for each column accordingly but the menu still appears. And how to disable select for the the same column?

[dan sh]

On MouseDown, check the column where mouse is clicked. This can be done using HitTest method. To disable selection of cells in a particular column, you will need to override SetSelectedColumnCore method.

The word "politics" describes the process so well: "Poli" in Latin meaning "many" and "tics" meaning "bloodsucking creatures." जय हिंद

[sohaib_a]

I tried the code below,but the result isnt as expected.

Dim hti As DataGridView.HitTestInfo = DataGridView1.HitTest(e.X, e.Y)

    column1 = hti.ColumnIndex
    If e.Button = Windows.Forms.MouseButtons.Right Then
        If hti.ColumnIndex = 1 Then

            DataGridView1.ContextMenuStrip = ContextMenuStrip1
            DataGridView1.ContextMenuStrip.Enabled = False
            DataGridView1.ContextMenuStrip.Visible = False
            


        Else
            DataGridView1.ContextMenuStrip = ContextMenuStrip1

End If
End If

When I click on the second column the menu strip still appears but it appears disable.So the enabled=false is fine but why isn't the visible= false working?

[dan sh]

Instead of taking this much pain, just reinitialize the contextmenustrip for the second column. Change the following C# code to VB.

this.dataGridView1.ContextMenuStrip = oContextMnuStrip;
this.dataGridView1.Columns[1].ContextMenuStrip = new ContextMenuStrip();

You will not need any extra code then.

The word "politics" describes the process so well: "Poli" in Latin meaning "many" and "tics" meaning "bloodsucking creatures." जय हिंद

[sohaib_a]

Ok..thanks alot.Regarding disabling the column selection where is SetSelectedColumnCore method found in vb.net?

[dan sh]

It is there in the DataGridView class. Since it is protected virtual method, you will need to inherit the DataGridView class in order to override.

The word "politics" describes the process so well: "Poli" in Latin meaning "many" and "tics" meaning "bloodsucking creatures." जय हिंद

[sohaib_a]

Ok..that sounds a little complicated for me,is there any other simpler way or do you have any code samples for it. Also after i select a cell and click on the context menu,the cell at 0,0 gets selected by default.I dont want any cell to get highlighted unless i click on it.How can this be done?

[dan sh]

Sohaib_A wrote:

Ok..that sounds a little complicated for me,is there any other simpler way or do you have any code samples for it.

Cant think of any other way.

Sohaib_A wrote:

Also after i select a cell and click on the context menu,the cell at 0,0 gets selected by default.I dont want any cell to get highlighted unless i click on it.How can this be done?

Setting focus might work out.

The word "politics" describes the process so well: "Poli" in Latin meaning "many" and "tics" meaning "bloodsucking creatures." जय हिंद