datagridview全黑_datagridview显示数据_vb.net datagridview(14)

// 列头的 ContextMenuStrip 设定

DataGridView1.Columns[0].HeaderCell.ContextMenuStrip = this.ContextMenuStrip2;

// 行的 ContextMenuStrip 设定

DataGridView1.Rows[0].ContextMenuStrip = this.ContextMenuStrip3;

// 单元格的 ContextMenuStrip 设定

DataGridView1[0, 0].ContextMenuStrip = this.ContextMenuStrip4;

对于单元格上的右键菜单的设定，优先顺序是：Cell > Row > Column > DataGridView

⇒ CellContextMenuStripNeeded、RowContextMenuStripNeeded事件

利用CellContextMenuStripNeeded事件可以设定单元格的右键菜单，尤其但需要右键菜单根据单元格值的变化而变化的时候。比起使用循环遍历，使用该事件来设定右键菜单的效率更高。但是，在DataGridView使用了DataSource绑定而且是VirtualMode的时候，该事件将不被引发。

[VB.NET]

'CellContextMenuStripNeeded事件处理方法

Private Sub DataGridView1_CellContextMenuStripNeeded( _

ByVal sender As Object, _

ByVal e As DataGridViewCellContextMenuStripNeededEventArgs) _

Handles DataGridView1.CellContextMenuStripNeeded

Dim dgv As DataGridView = CType(sender, DataGridView)

If e.RowIndex < 0 Then

'列头的ContextMenuStrip设定

e.ContextMenuStrip = Me.ContextMenuStrip1

ElseIf e.ColumnIndex < 0 Then

'行头的ContextMenuStrip设定

e.ContextMenuStrip = Me.ContextMenuStrip2

ElseIf TypeOf (dgv(e.ColumnIndex, e.RowIndex).Value) Is Integer Then

'如果单元格值是整数时

e.ContextMenuStrip = Me.ContextMenuStrip3

End If

End Sub

[C#]

//CellContextMenuStripNeeded事件处理方法

private void DataGridView1_CellContextMenuStripNeeded(object sender,

DataGridViewCellContextMenuStripNeededEventArgs e)

{

DataGridView dgv = (DataGridView)sender;

if (e.RowIndex < 0)

{

//列头的ContextMenuStrip设定

e.ContextMenuStrip = this.ContextMenuStrip1;

}

else if (e.ColumnIndex < 0)

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