DataGridViewColumnCollection.GetLastColumn 方法

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

返回符合给定筛选要求的显示序列的最后一列。

public:
 System::Windows::Forms::DataGridViewColumn ^ GetLastColumn(System::Windows::Forms::DataGridViewElementStates includeFilter, System::Windows::Forms::DataGridViewElementStates excludeFilter);

public System.Windows.Forms.DataGridViewColumn GetLastColumn (System.Windows.Forms.DataGridViewElementStates includeFilter, System.Windows.Forms.DataGridViewElementStates excludeFilter);

member this.GetLastColumn : System.Windows.Forms.DataGridViewElementStates * System.Windows.Forms.DataGridViewElementStates -> System.Windows.Forms.DataGridViewColumn

Public Function GetLastColumn (includeFilter As DataGridViewElementStates, excludeFilter As DataGridViewElementStates) As DataGridViewColumn

参数

includeFilter

DataGridViewElementStates

DataGridViewElementStates 值的按位组合，表示要申请包含的筛选。

excludeFilter

DataGridViewElementStates

DataGridViewElementStates 值的按位组合，表示要申请排除的筛选。

返回

DataGridViewColumn

符合给定筛选要求的显示序列中的最后一个显示列或 null（如果未找到符合要求的列）。

例外

ArgumentException

至少有一个筛选值不是 DataGridViewElementStates 值的有效按位组合。

示例

下面的代码示例使用 GetLastColumn 该方法交换最后一个显示的列和第一个显示列。

// Swap the last column with the first.
void Button10_Click( Object^ /*sender*/, EventArgs^ /*args*/ )
{
   DataGridViewColumnCollection^ columnCollection = dataGridView->Columns;
   DataGridViewColumn^ firstDisplayedColumn = columnCollection->GetFirstColumn( DataGridViewElementStates::Visible );
   DataGridViewColumn^ lastDisplayedColumn = columnCollection->GetLastColumn( DataGridViewElementStates::Visible, DataGridViewElementStates::None );
   int firstColumn_sIndex = firstDisplayedColumn->DisplayIndex;
   firstDisplayedColumn->DisplayIndex = lastDisplayedColumn->DisplayIndex;
   lastDisplayedColumn->DisplayIndex = firstColumn_sIndex;
}

// Swap the last column with the first.
private void Button10_Click(object sender, EventArgs args)
{
    DataGridViewColumnCollection columnCollection = dataGridView.Columns;

    DataGridViewColumn firstVisibleColumn =
        columnCollection.GetFirstColumn(DataGridViewElementStates.Visible);
    DataGridViewColumn lastVisibleColumn =
        columnCollection.GetLastColumn(
            DataGridViewElementStates.Visible, DataGridViewElementStates.None);

    int firstColumn_sIndex = firstVisibleColumn.DisplayIndex;
    firstVisibleColumn.DisplayIndex = lastVisibleColumn.DisplayIndex;
    lastVisibleColumn.DisplayIndex = firstColumn_sIndex;
}

' Swap the last column with the first.
Private Sub Button10_Click(ByVal sender As Object, _
    ByVal args As EventArgs) Handles Button10.Click

    Dim columnCollection As DataGridViewColumnCollection = _
        dataGridView.Columns

    Dim firstVisibleColumn As DataGridViewColumn = _
        columnCollection.GetFirstColumn(DataGridViewElementStates.Visible)
    Dim lastVisibleColumn As DataGridViewColumn = _
        columnCollection.GetLastColumn(DataGridViewElementStates.Visible, _
        Nothing)

    Dim firstColumn_sIndex As Integer = firstVisibleColumn.DisplayIndex
    firstVisibleColumn.DisplayIndex = _
        lastVisibleColumn.DisplayIndex
    lastVisibleColumn.DisplayIndex = firstColumn_sIndex
End Sub

注解

显示顺序的最后一列是具有最高 DisplayIndex 值的列，无论该列是否在屏幕上实际可见。

使用此方法可以确定符合给定条件的最后一列，而无需直接比较索引值。

另请参阅

• DataGridView
• DataGridViewColumn
• DisplayIndex
• DataGridViewElementStates