DataGridViewRowPrePaintEventArgs.RowIndex 属性

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

获取当前 DataGridViewRow 的索引。

public:
 property int RowIndex { int get(); };

public int RowIndex { get; }

member this.RowIndex : int

Public ReadOnly Property RowIndex As Integer

属性值

Int32

当前 DataGridViewRow 的索引。

示例

下面的代码示例演示如何使用 RowIndex 属性访问当前行。 虽然代码实际使用该 DataGridViewRowPostPaintEventArgs.RowIndex 属性，但此属性几乎与 RowIndex 属性 DataGridViewRowPrePaintEventArgs相同。 变量 e的类型 DataGridViewRowPostPaintEventArgs。 此代码示例是 How to： Customize the Appearance of Rows in the Windows 窗体 DataGridView Control 中提供的较大示例的一部分。

// Get the content that spans multiple columns.
object recipe =
    this.dataGridView1.Rows.SharedRow(e.RowIndex).Cells[2].Value;

if (recipe != null)
{
    String text = recipe.ToString();

    // Calculate the bounds for the content that spans multiple 
    // columns, adjusting for the horizontal scrolling position 
    // and the current row height, and displaying only whole
    // lines of text.
    Rectangle textArea = rowBounds;
    textArea.X -= this.dataGridView1.HorizontalScrollingOffset;
    textArea.Width += this.dataGridView1.HorizontalScrollingOffset;
    textArea.Y += rowBounds.Height - e.InheritedRowStyle.Padding.Bottom;
    textArea.Height -= rowBounds.Height -
        e.InheritedRowStyle.Padding.Bottom;
    textArea.Height = (textArea.Height / e.InheritedRowStyle.Font.Height) *
        e.InheritedRowStyle.Font.Height;

    // Calculate the portion of the text area that needs painting.
    RectangleF clip = textArea;
    clip.Width -= this.dataGridView1.RowHeadersWidth + 1 - clip.X;
    clip.X = this.dataGridView1.RowHeadersWidth + 1;
    RectangleF oldClip = e.Graphics.ClipBounds;
    e.Graphics.SetClip(clip);

    // Draw the content that spans multiple columns.
    e.Graphics.DrawString(
        text, e.InheritedRowStyle.Font, forebrush, textArea);

    e.Graphics.SetClip(oldClip);
}

' Get the content that spans multiple columns.
Dim recipe As Object = _
    Me.dataGridView1.Rows.SharedRow(e.RowIndex).Cells(2).Value

If (recipe IsNot Nothing) Then
    Dim text As String = recipe.ToString()

    ' Calculate the bounds for the content that spans multiple 
    ' columns, adjusting for the horizontal scrolling position 
    ' and the current row height, and displaying only whole
    ' lines of text.
    Dim textArea As Rectangle = rowBounds
    textArea.X -= Me.dataGridView1.HorizontalScrollingOffset
    textArea.Width += Me.dataGridView1.HorizontalScrollingOffset
    textArea.Y += rowBounds.Height - e.InheritedRowStyle.Padding.Bottom
    textArea.Height -= rowBounds.Height - e.InheritedRowStyle.Padding.Bottom
    textArea.Height = (textArea.Height \ e.InheritedRowStyle.Font.Height) * _
        e.InheritedRowStyle.Font.Height

    ' Calculate the portion of the text area that needs painting.
    Dim clip As RectangleF = textArea
    clip.Width -= Me.dataGridView1.RowHeadersWidth + 1 - clip.X
    clip.X = Me.dataGridView1.RowHeadersWidth + 1
    Dim oldClip As RectangleF = e.Graphics.ClipBounds
    e.Graphics.SetClip(clip)

    ' Draw the content that spans multiple columns.
    e.Graphics.DrawString(text, e.InheritedRowStyle.Font, forebrush, _
        textArea)

    e.Graphics.SetClip(oldClip)
End If

注解

The row index can be used to access the current row within a DataGridViewRowCollection.

另请参阅

• DataGridView
• DataGridViewRow