DataGridViewImageColumn.Description 屬性

  • 參考

定義

命名空間:
System.Windows.Forms
組件:
System.Windows.Forms.dll

取得或設定可描述資料行的影像之字串。

public:
 property System::String ^ Description { System::String ^ get(); void set(System::String ^ value); };
[System.ComponentModel.Browsable(true)]
public string Description { get; set; }
[<System.ComponentModel.Browsable(true)>]
member this.Description : string with get, set
Public Property Description As String

屬性值

String

資料行影像的文字描述。 預設為 Empty。

屬性
BrowsableAttribute

例外狀況

InvalidOperationException

CellTemplate 屬性的值是 null。

範例

下列程式碼範例示範如何使用 Description 屬性來反映影像配置。 此範例是如何在 Windows Forms DataGridView 控制項中使用影像資料行中較大範例的一部分。

void Stretch( Object^ sender, EventArgs^ e )
{
   System::Collections::IEnumerator^ myEnum = dataGridView1->Columns->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      DataGridViewImageColumn^ column = safe_cast<DataGridViewImageColumn^>(myEnum->Current);
      column->ImageLayout = DataGridViewImageCellLayout::Stretch;
      column->Description = L"Stretched";
   }
}

void ZoomToImage( Object^ sender, EventArgs^ e )
{
   System::Collections::IEnumerator^ myEnum1 = dataGridView1->Columns->GetEnumerator();
   while ( myEnum1->MoveNext() )
   {
      DataGridViewImageColumn^ column = safe_cast<DataGridViewImageColumn^>(myEnum1->Current);
      column->ImageLayout = DataGridViewImageCellLayout::Zoom;
      column->Description = L"Zoomed";
   }
}

void NormalImage( Object^ sender, EventArgs^ e )
{
   System::Collections::IEnumerator^ myEnum2 = dataGridView1->Columns->GetEnumerator();
   while ( myEnum2->MoveNext() )
   {
      DataGridViewImageColumn^ column = safe_cast<DataGridViewImageColumn^>(myEnum2->Current);
      column->ImageLayout = DataGridViewImageCellLayout::Normal;
      column->Description = L"Normal";
   }
}

private void Stretch(object sender, EventArgs e)
{
    foreach (DataGridViewImageColumn column in
        dataGridView1.Columns)
    {
        column.ImageLayout = DataGridViewImageCellLayout.Stretch;
        column.Description = "Stretched";
    }
}

private void ZoomToImage(object sender, EventArgs e)
{

    foreach (DataGridViewImageColumn column in
        dataGridView1.Columns)
    {
        column.ImageLayout = DataGridViewImageCellLayout.Zoom;
        column.Description = "Zoomed";
    }
}

private void NormalImage(object sender, EventArgs e)
{

    foreach (DataGridViewImageColumn column in
        dataGridView1.Columns)
    {
        column.ImageLayout = DataGridViewImageCellLayout.Normal;
        column.Description = "Normal";
    }
}

Private Sub Stretch(ByVal sender As Object, _
    ByVal e As EventArgs) Handles Button3.Click

    For Each column As DataGridViewImageColumn _
        In dataGridView1.Columns
        column.ImageLayout = DataGridViewImageCellLayout.Stretch
        column.Description = "Stretched image layout"
    Next
End Sub

Private Sub ZoomToImage(ByVal sender As Object, _
    ByVal e As EventArgs) Handles Button4.Click

    For Each column As DataGridViewImageColumn _
        In dataGridView1.Columns
        column.ImageLayout = DataGridViewImageCellLayout.Zoom
        column.Description = "Zoomed image layout"
    Next
End Sub

Private Sub NormalImage(ByVal sender As Object, _
    ByVal e As EventArgs) Handles Button5.Click

    For Each column As DataGridViewImageColumn _
        In dataGridView1.Columns
        column.ImageLayout = DataGridViewImageCellLayout.Normal
        column.Description = "Normal image layout"
    Next
End Sub

備註

您可以使用 Description 屬性來描述 或 Icon 屬性所提供的 Image 影像。 此描述提供影像的可存取替代方案。 此外，當儲存格值複製到剪貼簿時，就會使用描述文字。

取得或設定這個屬性會取得或設定 Description 屬性所 CellTemplate 傳回之物件的 屬性。 設定這個屬性也會設定 Description 資料行中每個儲存格的屬性。 若要覆寫個別儲存格的指定值，請在設定資料行值之後設定儲存格值。

適用於

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