Create Custom DataGridView Column

Question

I want to create a DataGridView custom column that previews a ProgressBar as cell on it.

Elavarasan R · Answer

Hello Abubakr Mahdi, Try below code. using System; using System.ComponentModel; using System.Drawing; using System.Windows.Forms; namespace DataGridViewWatermark { public class DataGridViewWatermarkColumn : DataGridViewTextBoxColumn { public DataGridViewWatermarkColumn() { CellTemplate = new DataGridViewWatermarkCell(); } public String WatermarkText { get { if (((DataGridViewWatermarkCell)CellTemplate) == null ) { throw new InvalidOperationException( "cell template required" ); } return ((DataGridViewWatermarkCell)CellTemplate).WatermarkText; } set { if ( this .WatermarkText != value) { ((DataGridViewWatermarkCell)CellTemplate).WatermarkText = value; if ( this .DataGridView != null ) { DataGridViewRowCollection dataGridViewRows = this .DataGridView.Rows; int rowCount = dataGridViewRows.Count; for ( int rowIndex = 0; rowIndex { DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex); DataGridViewWatermarkCell cell = dataGridViewRow.Cells[ this .Index] as DataGridViewWatermarkCell; if (cell != null ) { cell.WatermarkText = value; } } } } } } } public class DataGridViewWatermarkCell : DataGridViewTextBoxCell { private String watermarkTextValue; public String WatermarkText { get { return watermarkTextValue; } set { watermarkTextValue = value; } } public override object Clone() { DataGridViewWatermarkCell cell = (DataGridViewWatermarkCell) base .Clone(); cell.WatermarkText = this .WatermarkText; return cell; } protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates cellState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts) { if ((OwningColumn.Site == null || !OwningColumn.Site.DesignMode) && (RowIndex (GetValue(rowIndex) == null || GetValue(rowIndex) == DBNull.Value)) { cellStyle.Font = new Font(cellStyle.Font, FontStyle.Italic); cellStyle.ForeColor = Color.Gray; formattedValue = WatermarkText; } base .Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts); } } } Rferences: https://docs.microsoft.com/en-us/dotnet/framework/winforms/controls/customize-cells-and-columns-in-the-datagrid-by-extending-behavior https://docs.microsoft.com/en-us/dotnet/framework/winforms/controls/customizing-the-windows-forms-datagridview-control https://www.codemag.com/article/0707061/Create-a-Custom-DataGridView-Column Video links: https://www.youtube.com/watch?v=vHkYITRArgA https://www.youtube.com/watch?v=crxsHjuMjE4 Best of luck..