DrawListViewColumnHeaderEventArgs.Header 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

來源:

DrawListViewColumnHeaderEventArgs.cs

取得 ColumnHeader 要繪圖的欄位標頭。

public:
 property System::Windows::Forms::ColumnHeader ^ Header { System::Windows::Forms::ColumnHeader ^ get(); };

public System.Windows.Forms.ColumnHeader? Header { get; }

member this.Header : System.Windows.Forms.ColumnHeader

Public ReadOnly Property Header As ColumnHeader

屬性值

ColumnHeader

代表 ColumnHeader 欄位標頭。

範例

以下程式碼範例示範如何在提供自訂控制圖ListView的應用程式中使用該Header屬性。

完整範例請參閱 DrawListViewColumnHeaderEventArgs 概述參考主題。

// Draws column headers.
private void listView1_DrawColumnHeader(object sender,
    DrawListViewColumnHeaderEventArgs e)
{
    using (StringFormat sf = new StringFormat())
    {
        // Store the column text alignment, letting it default
        // to Left if it has not been set to Center or Right.
        switch (e.Header.TextAlign)
        {
            case HorizontalAlignment.Center:
                sf.Alignment = StringAlignment.Center;
                break;
            case HorizontalAlignment.Right:
                sf.Alignment = StringAlignment.Far;
                break;
        }

        // Draw the standard header background.
        e.DrawBackground();

        // Draw the header text.
        using (Font headerFont =
                    new Font("Helvetica", 10, FontStyle.Bold))
        {
            e.Graphics.DrawString(e.Header.Text, headerFont,
                Brushes.Black, e.Bounds, sf);
        }
    }
    return;
}

' Draws column headers.
Private Sub listView1_DrawColumnHeader(ByVal sender As Object, _
    ByVal e As DrawListViewColumnHeaderEventArgs) _
    Handles listView1.DrawColumnHeader

    Dim sf As New StringFormat()
    Try

        ' Store the column text alignment, letting it default
        ' to Left if it has not been set to Center or Right.
        Select Case e.Header.TextAlign
            Case HorizontalAlignment.Center
                sf.Alignment = StringAlignment.Center
            Case HorizontalAlignment.Right
                sf.Alignment = StringAlignment.Far
        End Select

        ' Draw the standard header background.
        e.DrawBackground()

        ' Draw the header text.
        Dim headerFont As New Font("Helvetica", 10, FontStyle.Bold)
        Try
            e.Graphics.DrawString(e.Header.Text, headerFont, _
                Brushes.Black, e.Bounds, sf)
        Finally
            headerFont.Dispose()
        End Try

    Finally
        sf.Dispose()
    End Try

End Sub

備註

當 State 房產無法提供足夠資訊以滿足你的需求時，這個物業才是有用的。 這個 State 屬性只提供基本的狀態資訊，例如你可以用來判斷滑鼠是否位於欄位標頭上。 而屬性 Header 則允許你存取代表標頭的所有成員 ColumnHeader 。

另請參閱

• ColumnHeader
• ListView
• DrawColumnHeader
• OwnerDraw