ErrorAddDataBoundRowEventHandler Delegate

Represents the method that handles an ErrorAddDataBoundRow event.

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

Syntax

'Declaration
Public Delegate Sub ErrorAddDataBoundRowEventHandler ( _
    sender As Object, _
    e As ErrorAddDataBoundRowEventArgs _
)

public delegate void ErrorAddDataBoundRowEventHandler(
    Object sender,
    ErrorAddDataBoundRowEventArgs e
)

Parameters

• sender
  Type: System.Object

  The source of the event.

• e
  Type: Microsoft.Office.Tools.Excel.ErrorAddDataBoundRowEventArgs

  An ErrorAddDataBoundRowEventArgs that contains the event data.

Remarks

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.

Examples

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.

This example is for a document-level customization.

WithEvents ErrorAddDataBoundRowList As _
        Microsoft.Office.Tools.Excel.ListObject
    Private Sub ListObject_ErrorAddDataBoundRow()
        ' Create a new DataSet and DataTable. 
        Dim ds As New DataSet()
        Dim dt As DataTable = ds.Tables.Add("Customers")
        Dim lastName As New DataColumn("LastName")
        dt.Columns.Add(lastName)
        dt.Columns.Add(New DataColumn("FirstName"))

        Dim myUC As New UniqueConstraint("CustConstraint", _
            lastName)
        dt.Constraints.Add(myUC)

        ' Add a new row to the DataTable. 
        Dim dr As DataRow = dt.NewRow()
        dr("LastName") = "Chan"
        dr("FirstName") = "Gareth"
        dt.Rows.Add(dr)

        ' Create a list object.
        ErrorAddDataBoundRowList = _
            Me.Controls.AddListObject(Me.Range("A1"), _
            "ErrorAddDataBoundRowList")

        ' Bind the list object to the DataTable.
        ErrorAddDataBoundRowList.AutoSetDataBoundColumnHeaders = True
        ErrorAddDataBoundRowList.SetDataBinding(ds, "Customers", _
            "LastName", "FirstName")
    End Sub 


    Private Sub List1_ErrorAddDataBoundRow(ByVal sender As Object, _
        ByVal e As Microsoft.Office.Tools.Excel.ErrorAddDataBoundRowEventArgs) _
        Handles ErrorAddDataBoundRowList.ErrorAddDataBoundRow
        MessageBox.Show("Last names must be unique.")

    End Sub

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(lastName);
    dt.Columns.Add(new DataColumn("FirstName"));

    UniqueConstraint myUC = new UniqueConstraint( "CustConstraint", 
        lastName);
    dt.Constraints.Add(myUC);

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

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

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

    // Create the event handler.
    list1.ErrorAddDataBoundRow += new 
        Microsoft.Office.Tools.Excel.
        ErrorAddDataBoundRowEventHandler(list1_ErrorAddDataBoundRow);
}

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

See Also

Reference

Microsoft.Office.Tools.Excel Namespace