In order to complete this walkthrough, you will need the following:

To create columns using our rich ColumnType and EditType

1. Binding WebGrid to Hierarchical ISDataSource.
2. Set the ValueList from column properties:
   
   
   
   
3. Add this javaScript function which will later be used when the column colBtn is clicked.
   
   

   JavaScript	Copy Code
   <script language="javascript"> function DoClick(ID) { alert("ProductID = " + ID); return true; } </script>

   
   
4. In the InitializeRow event of the grid, you put codes to set the value for column colCustom whose ColumnType is set to Custom , other than that you also add CustomObjectAttributes for column colBtn which when clicked will execute the javaScript function which has been declared above. You also set the HyperlinkFormatString property for column ProductID.
   
   

   C#

   Copy Code

   private void WebGrid1_InitializeRow(object sender, ISNet.WebUI.WebGrid.RowEventArgs e) { if(e.Row.Type == RowType.Record) { string productID = e.Row.Cells.GetNamedItem("ProductID").Text; string categoryID = e.Row.Cells.GetNamedItem("CategoryID").Text; string customText = "" + productID + " " + categoryID +""; // obtain the cells collection of the current row WebGridCellCollection cells = e.Row.Cells; // assigns custom text cells.GetNamedItem("colCustom").Text = customText; // prepare CustomObjectAttributes text // of button type column // by invoking DoClick() at the client side // along with the CustomerID string customObjectAttributes = " onclick = \"DoClick(ProductID)\"" + " ProductID = \"" + productID + "\""; // attach the CustomObjectAttributes to the button // type column cells.GetNamedItem("colBtn").CustomObjectAttributes = customObjectAttributes; int discontinued = Convert.ToInt16(cells.GetNamedItem("Discontinued").Value); // the objective is to make button invisible // if the 'Customer' is from 'UK' if(discontinued == 1) { // Configure the column type to be ordinary text // instead of button type column cells.GetNamedItem("colBtn").Column.ColumnType = ColumnType.Text; cells.GetNamedItem("colBtn").Text = "Not Editable"; } else { cells.GetNamedItem("colBtn").Column.ColumnType = ColumnType.Button; cells.GetNamedItem("colBtn").Column.ButtonText = "Get ProductID"; } string hypFormatString = "NewPage.aspx?ProductID='" + e.Row.Cells.GetNamedItem("ProductID").Text + "'&&CategoryID='" + e.Row.Cells.GetNamedItem("CategoryID").Text + "'"; e.Row.Cells.GetNamedItem("ProductID").Column.HyperlinkFormatString = hypFormatString; e.Row.Cells.GetNamedItem("ProductID").Column.HyperlinkTarget = HyperlinkTarget.Blank; } }