DataTable.RejectChanges 方法

定义

命名空间:
System.Data
程序集:
System.Data.Common.dll
程序集:
System.Data.dll
程序集:
netstandard.dll

回滚自该表加载以来或上次调用 AcceptChanges() 以来对该表进行的所有更改。Rolls back all changes that have been made to the table since it was loaded, or the last time AcceptChanges() was called.

public:
 void RejectChanges();
public void RejectChanges ();
member this.RejectChanges : unit -> unit
Public Sub RejectChanges ()

示例

下面的示例对进行了几处更改 DataTable ，但通过调用方法拒绝了更改 RejectChanges 。The following example makes several changes to a DataTable, but rejects the changes by invoking the RejectChanges method.

private void ShowRejectChanges(DataTable table)
{
    // Print the values of row 1, in the column named "CompanyName."
    Console.WriteLine(table.Rows[1]["CompanyName"]);

    // Make Changes to the column named "CompanyName."
    table.Rows[1]["CompanyName"] = "Taro";

    // Reject the changes.
    table.RejectChanges();

    // Print the original values:
    Console.WriteLine(table.Rows[1]["CompanyName"]);
}

Private Sub ShowRejectChanges(table As DataTable)
    ' Print the values of row 1, in the column named "CompanyName."
    Console.WriteLine(table.Rows(1)("CompanyName"))

    ' Make Changes to the column named "CompanyName."
    table.Rows(1)("CompanyName") = "Taro"

    ' Reject the changes.
    table.RejectChanges()

    ' Print the original values:
    Console.WriteLine(table.Rows(1)("CompanyName"))
End Sub

注解

RejectChanges调用时， DataRow 仍处于编辑模式的任何对象都将取消其编辑。When RejectChanges is called, any DataRow objects that are still in edit-mode cancel their edits. 删除新行。New rows are removed. DataRowState设置为 Modified 或 Deleted 返回到其原始状态的行。Rows with the DataRowState set to Modified or Deleted return back to their original state.

适用于

另请参阅