DataTableCollection.Clear 方法

定义

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

清除所有 DataTable 对象的集合。Clears the collection of all DataTable objects.

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

示例

下面的示例获取DataTableCollection DataSet的，然后清除所有表的集合。The following example gets the DataTableCollection of a DataSet, and then clears the collection of all tables.

private void ClearTables()
{
    // Get the DataSet of a DataGrid control.
    DataSet dataSet = (DataSet)DataGrid1.DataSource;
    DataTableCollection tables = dataSet.Tables;

    // Clear the collection.
    tables.Clear();
}

Private Sub ClearTables()
   ' Get the DataSet of a DataGrid control.
   Dim dataSet As DataSet = CType(DataGrid1.DataSource, DataSet)
   Dim tables As DataTableCollection = dataSet.Tables

   ' Clear the collection.
   tables.Clear
End Sub

注解

若要从集合DataTable中删除特定的，请Remove使用方法。To remove a particular DataTable from the collection, use the Remove method.

适用于