How to replace Row Header icon with another icon in WinForms Grid?
Replace the default rowheader triangle icon with another icon
By default, GridDataBoundGrid displays a triangle in the row header cell of the currently selected row. Refer to the following screenshot.
Solution
You can achieve this by changing the row header BaseStyleMap to Header and handling the PrepareViewStyleInfo events. In PrepareViewStyleInfo, you can also change the e.Style.Text (for text) or the e.Style.BackgroundImage (for images).
Refer to the following code example for changing BaseStyleMap.
C#
private void Form1_Load(object sender, System.EventArgs e) { this.gridDataBoundGrid1.BaseStylesMap["Row Header"].StyleInfo.CellType = "Header"; // BackgroundImageMode used to size to fit the image within the cell rectangle. this.gridDataBoundGrid1.BaseStylesMap["Row Header"].StyleInfo.BackgroundImageMode = GridBackgroundImageMode.StretchImage; this.gridDataBoundGrid1.PrepareViewStyleInfo += new Syncfusion.Windows.Forms.Grid.GridPrepareViewStyleInfoEventHandler(this.gridDataBoundGrid1_PrepareViewStyleInfo); }
VB
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load Me.gridDataBoundGrid1.BaseStylesMap("Row Header").StyleInfo.CellType = "Header" Me.gridDataBoundGrid1.BaseStylesMap("Row Header").StyleInfo.BackgroundImageMode = GridBackgroundImageMode.StretchImage AddHandler gridDataBoundGrid1.PrepareViewStyleInfo, AddressOf gridDataBoundGrid1_PrepareViewStyleInfo End Sub
Refer to the following code example for changing text or image in PrepareViewStyleInfo.
C#
private void gridDataBoundGrid1_PrepareViewStyleInfo(object sender, Syncfusion.Windows.Forms.Grid.GridPrepareViewStyleInfoEventArgs e) { if(e.ColIndex == 0 && this.gridDataBoundGrid1.CurrentCell.HasCurrentCellAt(e.RowIndex)) { e.Style.BackgroundImage = SystemIcons.Warning.ToBitmap(); } }
VB
Private Sub gridDataBoundGrid1_PrepareViewStyleInfo(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Grid.GridPrepareViewStyleInfoEventArgs) Handles gridDataBoundGrid1.PrepareViewStyleInfo If e.ColIndex = 0 AndAlso Me.gridDataBoundGrid1.CurrentCell.HasCurrentCellAt(e.RowIndex) Then e.Style.BackgroundImage = SystemIcons.Asterisk.ToBitmap() End If End Sub
The following screenshot displays the RowHeader replaced with another image and text.
Conclusion
I hope you enjoyed learning on how to replace the default RowHeader icon with another icon in WinForms Grid.
You can refer to our WinForms Grid feature tour page to know about its other groundbreaking feature representations. You can also explore our documentation to understand how to present and manipulate data.
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