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ErrorAddDataBoundRowEventHandler Delegate

Represents the method that handles an ErrorAddDataboundRow event.

Namespace: Microsoft.Office.Tools.Excel
Assembly: Microsoft.Office.Tools.Excel (in

public delegate void ErrorAddDataBoundRowEventHandler (
	Object sender,
	ErrorAddDataBoundRowEventArgs e



The source of the event.


An ErrorAddDataboundRowEventArgs that contains the event data.

When you create an ErrorAddDataboundRowEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler method is called whenever the event occurs unless you remove the delegate. For more information about delegates, see Events and Delegates.

The following code example creates a DataTable and a ListObject, and binds the ListObject to the DataTable. It then creates an ErrorAddDataboundRow event handler. To test the event, manually add a new row to the ListObject and enter the last name "Chan" and a first name. The event handler displays a message.

private void ListObject_ErrorAddDataBoundRow()
    // Create a new DataSet and DataTable.
    DataSet ds = new DataSet();
    DataTable dt = ds.Tables.Add("Customers");
    DataColumn lastName = new DataColumn("LastName");
    dt.Columns.Add(new DataColumn("FirstName"));

    UniqueConstraint myUC = new UniqueConstraint( "CustConstraint", 

    // Add a new row to the DataTable.
    DataRow dr = dt.NewRow();
    dr["LastName"] = "Chan";
    dr["FirstName"] = "Gareth";

    // Create a list object.
    Microsoft.Office.Tools.Excel.ListObject list1 = 
        this.Range["A1", missing], "list1");

    // Bind the list object to the DataTable.
    list1.AutoSetDataBoundColumnHeaders = true;
    list1.SetDataBinding(ds, "Customers", "LastName",

    // Create the event handler.
    list1.ErrorAddDataBoundRow += new 

void list1_ErrorAddDataBoundRow(object sender, 
    Microsoft.Office.Tools.Excel.ErrorAddDataBoundRowEventArgs e)
    MessageBox.Show("Last names must be unique.");