Windows Forms FAQ : When I click on a row header the row is selected a... : Syncfusion



	Questions and answers in this FAQ have been collected from newsgroup posts, various mailing lists and the employees of Syncfusion.

This code adds a method to a derived grid that simulates a mouseclick on the rowheader of the row passed into the method.

public class MyDataGrid : DataGrid

{

public const int WM_LBUTTONDOWN = 513; // 0x0201

public const int WM_LBUTTONUP = 514; // 0x0202

[System.Runtime.InteropServices.DllImport("user32.dll")]

static extern bool SendMessage(IntPtr hWnd, Int32 msg, Int32 wParam, Int32 lParam);

public void ClickRowHeader(int row)

{

//get a point to click

Rectangle rect = this.GetCellBounds(row, 0);

Int32 lparam = MakeLong(rect.Left - 4, rect.Top + 4);

//click it

SendMessage( this.Handle, WM_LBUTTONDOWN, 0, lparam);

SendMessage( this.Handle, WM_LBUTTONUP, 0, lparam);

}

static int MakeLong(int LoWord, int HiWord)

{

return (HiWord << 16) | (LoWord & 0xffff);

}

.....

//usage - myDataGrid is of type MyDataGrid.

private void button2_Click(object sender, System.EventArgs e)

{

myDataGrid.ClickRowHeader(2);

}