DataGridViewColumnCollection.GetColumnCount(DataGridViewElementStates) 方法

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

傳回符合指定之篩選條件需求的資料行數。

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

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

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

Public Function GetColumnCount (includeFilter As DataGridViewElementStates) As Integer

參數

includeFilter

DataGridViewElementStates

表示包含篩選條件之 DataGridViewElementStates 值的位元 (Bitwise) 組合。

傳回

Int32

符合篩選條件需求的資料行數。

例外狀況

ArgumentException

includeFilter 不是 DataGridViewElementStates 值的有效位元組合。

範例

下列程式碼範例說明如何使用這個方法來取得選取的資料行數目。

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

另請參閱

• DataGridView
• DataGridViewColumn
• DataGridViewElementStates