DataGridView.RowHeadersWidth Property
Assembly: System.Windows.Forms (in system.windows.forms.dll)
/** @property */ public int get_RowHeadersWidth () /** @property */ public void set_RowHeadersWidth (int value)
public function get RowHeadersWidth () : int public function set RowHeadersWidth (value : int)
Property Value
The width, in pixels, of the column that contains row headers. The default is 43.The RowHeadersWidth property can be used to resize the row header column to a specified width. To adjust the width of this column to fit the contents of the row header cells, use the AutoResizeRowHeadersWidth method.
The following code example illustrates how to use the RowHeadersWidth property in a row-painting scenario. In the example, the value of this property is used to calculate the bounds within which a custom background is drawn.
This code is part of a larger example available in How to: Customize the Appearance of Rows in the Windows Forms DataGridView Control.
// Paints the custom selection background for selected rows. void dataGridView1_RowPrePaint(object sender, DataGridViewRowPrePaintEventArgs e) { // Do not automatically paint the focus rectangle. e.PaintParts &= ~DataGridViewPaintParts.Focus; // Determine whether the cell should be painted // with the custom selection background. if ((e.State & DataGridViewElementStates.Selected) == DataGridViewElementStates.Selected) { // Calculate the bounds of the row. Rectangle rowBounds = new Rectangle( this.dataGridView1.RowHeadersWidth, e.RowBounds.Top, this.dataGridView1.Columns.GetColumnsWidth( DataGridViewElementStates.Visible) - this.dataGridView1.HorizontalScrollingOffset + 1, e.RowBounds.Height); // Paint the custom selection background. using (Brush backbrush = new System.Drawing.Drawing2D.LinearGradientBrush(rowBounds, this.dataGridView1.DefaultCellStyle.SelectionBackColor, e.InheritedRowStyle.ForeColor, System.Drawing.Drawing2D.LinearGradientMode.Horizontal)) { e.Graphics.FillRectangle(backbrush, rowBounds); } } }
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.