DataGridViewColumnCollection.GetColumnCount(DataGridViewElementStates) 方法
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
返回符合给定筛选要求的列数。
public:
int GetColumnCount(System::Windows::Forms::DataGridViewElementStates includeFilter);public int GetColumnCount (System.Windows.Forms.DataGridViewElementStates includeFilter);member this.GetColumnCount : System.Windows.Forms.DataGridViewElementStates -> intPublic Function GetColumnCount (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
符合筛选要求的列数。
例外
includeFilter 不是 DataGridViewElementStates 值的有效按位组合。
示例
下面的代码示例演示如何使用此方法获取所选列数。
private void selectedColumnsButton_Click(object sender, System.EventArgs e)
{
Int32 selectedColumnCount = dataGridView1.Columns
.GetColumnCount(DataGridViewElementStates.Selected);
if (selectedColumnCount > 0)
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
for (int i = 0; i < selectedColumnCount; i++)
{
sb.Append("Column: ");
sb.Append(dataGridView1.SelectedColumns[i].Index
.ToString());
sb.Append(Environment.NewLine);
}
sb.Append("Total: " + selectedColumnCount.ToString());
MessageBox.Show(sb.ToString(), "Selected Columns");
}
}
Private Sub selectedColumnsButton_Click( _
ByVal sender As Object, ByVal e As System.EventArgs) _
Handles selectedColumnsButton.Click
Dim selectedColumnCount As Integer = dataGridView1.Columns _
.GetColumnCount(DataGridViewElementStates.Selected)
If selectedColumnCount > 0 Then
Dim sb As New System.Text.StringBuilder()
Dim i As Integer
For i = 0 To selectedColumnCount - 1
sb.Append("Column: ")
sb.Append(dataGridView1.SelectedColumns(i).Index.ToString())
sb.Append(Environment.NewLine)
Next i
sb.Append("Total: " + selectedColumnCount.ToString())
MessageBox.Show(sb.ToString(), "Selected Columns")
End If
End Sub