ErrorAddDataBoundRowEventArgs 接口

提供 ErrorAddDataBoundRow 事件的有关信息。

命名空间：  Microsoft.Office.Tools.Excel
程序集：  Microsoft.Office.Tools.Excel（在 Microsoft.Office.Tools.Excel.dll 中）

语法

声明
<GuidAttribute("eca34a5d-a43c-4be4-a24a-49d49ae4519b")> _
Public Interface ErrorAddDataBoundRowEventArgs

[GuidAttribute("eca34a5d-a43c-4be4-a24a-49d49ae4519b")]
public interface ErrorAddDataBoundRowEventArgs

ErrorAddDataBoundRowEventArgs 类型公开以下成员。

属性

	名称	说明
	InnerException	获取导致当前异常的 Exception 实例。
	Item	获取 ListObject 尝试添加到数据源中的新项。
	Retry	获取或设置一个值，该值指示 ListObject 是否应再次尝试添加项。

页首

备注

如果在尝试向绑定到 ListObject 的数据源中添加一个新行期间发生异常，则 ListObject 控件将引发 ErrorAddDataBoundRow 事件。Item 属性可用于获取 ListObject 尝试添加的新项。InnerException 属性提供引发的异常，Retry 属性可以用于指示是否应进行添加此行的另一次尝试。

示例

下面的代码示例创建一个 DataTable 和一个 ListObject，并将该 ListObject 绑定到该 DataTable。然后创建一个 ErrorAddDataBoundRow 事件处理程序。若要测试该事件，请向 ListObject 手动添加一个新行，并输入姓氏“Chan”和名字。该事件处理程序将显示一条消息。

此示例针对的是文档级自定义项。

    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.");
}

请参见

参考

Microsoft.Office.Tools.Excel 命名空间