GridColumnStylesCollection.Clear 方法

清除 DataGridColumnStyle 对象的集合。

**命名空间:**System.Windows.Forms
**程序集:**System.Windows.Forms（在 system.windows.forms.dll 中）

语法

声明
Public Sub Clear
用法
Dim instance As GridColumnStylesCollection

instance.Clear

public void Clear ()

public:
void Clear ()

public void Clear ()

public function Clear ()

示例

Private Sub Clear_Clicked(ByVal sender As Object, ByVal e As System.EventArgs) Handles clearButton.Click
    ' TablesAlreadyAdded set to false so that table styles can be added again.
    TablesAlreadyAdded = False
    myLabel.Text = "All Table Styles Cleared."
    ' Clear all the column styles and also table style for the grid.
    Dim myTableStyle As DataGridTableStyle
    For Each myTableStyle In myDataGrid.TableStyles
        Dim myColumns As GridColumnStylesCollection = myTableStyle.GridColumnStyles
        myColumns.Clear()
    Next myTableStyle
    myDataGrid.TableStyles.Clear()
End Sub 'Clear_Clicked

private void Clear_Clicked(object sender, System.EventArgs e)
{
   // TablesAlreadyAdded set to false so that table styles can be added again.
   TablesAlreadyAdded = false;
   myLabel.Text = "All Table Styles Cleared.";
   // Clear all the column styles and also table style for the grid.
   foreach (DataGridTableStyle myTableStyle in myDataGrid.TableStyles)
   {
      GridColumnStylesCollection myColumns = myTableStyle.GridColumnStyles;
      myColumns.Clear();
   }
   myDataGrid.TableStyles.Clear();
}

private:
   void Clear_Clicked( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      // TablesAlreadyAdded set to false so that table styles can be added again.
      TablesAlreadyAdded = false;
      myLabel->Text = "All Table Styles Cleared.";

      // Clear all the column styles and also table style for the grid.
      IEnumerator^ myEnum = myDataGrid->TableStyles->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         DataGridTableStyle^ myTableStyle = safe_cast<DataGridTableStyle^>(myEnum->Current);
         GridColumnStylesCollection^ myColumns = myTableStyle->GridColumnStyles;
         myColumns->Clear();
      }

      myDataGrid->TableStyles->Clear();
   }

private void ClearClicked(Object sender, System.EventArgs e)
{
    // TablesAlreadyAdded set to false so that table styles can be
    // added again.
    TablesAlreadyAdded = false;
    myLabel.set_Text("All Table Styles Cleared.");

    // Clear all the column styles and also table style for the grid.
    for (int iCtr = 0; iCtr < myDataGrid.get_TableStyles().get_Count();
        iCtr++) {
        DataGridTableStyle myTableStyle = myDataGrid.get_TableStyles().
            get_Item(iCtr);
        GridColumnStylesCollection myColumns = myTableStyle.
            get_GridColumnStyles();
        myColumns.Clear();
    }
    myDataGrid.get_TableStyles().Clear();
} //ClearClicked

平台

Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

.NET Compact Framework

受以下版本支持：2.0、1.0

请参见

参考

GridColumnStylesCollection 类
GridColumnStylesCollection 成员
System.Windows.Forms 命名空间
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