C#

System.Collections.Generic.HashSet<string> match =
    new System.Collections.Generic.HashSet<string>
    { "a", "b", "apple", "c", "grape" } ;
 
System.Collections.Generic.HashSet<string> fruits =
    new System.Collections.Generic.HashSet<string>
    { "apple", "passionfruit", "banana", "mango", "orange", "blueberry", "grape", "strawberry" } ;
 
System.Collections.Generic.HashSet<string> intersection =
    new System.Collections.Generic.HashSet<string>
    (
        match
    ) ;
 
intersection.IntersectWith ( fruits ) ;

private void MyDataGridViewInitializationMethod()
{
    ...
    dataGridView.EditingControlShowing +=
new DataGridViewEditingControlShowingEventHandler(dataGridView_EditingControlShowing);
}

private void dataGridView_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
    e.Control.KeyPress +=
        new KeyPressEventHandler(Control_KeyPress);
}

private void Control_KeyPress(object sender, KeyPressEventArgs e)
{
    if (char.IsNumber(e.KeyChar))
    {
       //your code here
    }
}

strizi wrote:

Is it possible to make two projects in one workspace and make in the C# project a referenc to the C/C++ project??

<a href="http://downloads.pooredesign.com/CS-Test.zip" rel="nofollow">http://downloads.pooredesign.com/CS-Test.zip</a>[<a href="http://downloads.pooredesign.com/CS-Test.zip" rel="nofollow" target="_blank">^</a>]

strizi wrote:

But I think, that I can not copy some C-files (*.c, *.h) to the project CLib without any changes on the files...