DataGridViewColumnCollection.GetColumnsWidth 方法

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

返回显示所有符合给定筛选要求的列所需的宽度（以像素为单位）。

public:
 int GetColumnsWidth(System::Windows::Forms::DataGridViewElementStates includeFilter);

public int GetColumnsWidth (System.Windows.Forms.DataGridViewElementStates includeFilter);

member this.GetColumnsWidth : System.Windows.Forms.DataGridViewElementStates -> int

Public Function GetColumnsWidth (includeFilter As DataGridViewElementStates) As Integer

参数

includeFilter

DataGridViewElementStates

DataGridViewElementStates 值的按位组合，表示包含的筛选。

返回

Int32

显示所有符合筛选要求的列所需的宽度（以像素为单位）。

例外

ArgumentException

includeFilter 不是 DataGridViewElementStates 值的有效按位组合。

示例

下面的代码示例演示了此方法的使用。 此示例是How to： Customize the Appearance of Rows in the Windows 窗体 DataGridView 控件中提供的更大示例的一部分。

// Paints the custom selection background for selected rows.
void dataGridView1_RowPrePaint(object sender,
        DataGridViewRowPrePaintEventArgs e)
{
    // Do not automatically paint the focus rectangle.
    e.PaintParts &= ~DataGridViewPaintParts.Focus;

    // Determine whether the cell should be painted
    // with the custom selection background.
    if ((e.State & DataGridViewElementStates.Selected) ==
                DataGridViewElementStates.Selected)
    {
        // Calculate the bounds of the row.
        Rectangle rowBounds = new Rectangle(
            this.dataGridView1.RowHeadersWidth, e.RowBounds.Top,
            this.dataGridView1.Columns.GetColumnsWidth(
                DataGridViewElementStates.Visible) -
            this.dataGridView1.HorizontalScrollingOffset + 1,
            e.RowBounds.Height);

        // Paint the custom selection background.
        using (Brush backbrush =
            new System.Drawing.Drawing2D.LinearGradientBrush(rowBounds,
                this.dataGridView1.DefaultCellStyle.SelectionBackColor,
                e.InheritedRowStyle.ForeColor,
                System.Drawing.Drawing2D.LinearGradientMode.Horizontal))
        {
            e.Graphics.FillRectangle(backbrush, rowBounds);
        }
    }
}

' Paints the custom selection background for selected rows.
Sub dataGridView1_RowPrePaint(ByVal sender As Object, _
    ByVal e As DataGridViewRowPrePaintEventArgs) _
    Handles dataGridView1.RowPrePaint

    ' Do not automatically paint the focus rectangle.
    e.PaintParts = e.PaintParts And Not DataGridViewPaintParts.Focus

    ' Determine whether the cell should be painted with the 
    ' custom selection background.
    If (e.State And DataGridViewElementStates.Selected) = _
        DataGridViewElementStates.Selected Then

        ' Calculate the bounds of the row.
        Dim rowBounds As New Rectangle( _
            Me.dataGridView1.RowHeadersWidth, e.RowBounds.Top, _
            Me.dataGridView1.Columns.GetColumnsWidth( _
            DataGridViewElementStates.Visible) - _
            Me.dataGridView1.HorizontalScrollingOffset + 1, _
            e.RowBounds.Height)

        ' Paint the custom selection background.
        Dim backbrush As New _
            System.Drawing.Drawing2D.LinearGradientBrush(rowBounds, _
            Me.dataGridView1.DefaultCellStyle.SelectionBackColor, _
            e.InheritedRowStyle.ForeColor, _
            System.Drawing.Drawing2D.LinearGradientMode.Horizontal)
        Try
            e.Graphics.FillRectangle(backbrush, rowBounds)
        Finally
            backbrush.Dispose()
        End Try
    End If

End Sub

另请参阅

• DataGridView
• DataGridViewColumn
• DataGridViewElementStates