DataGridViewColumnCollection.GetColumnCount(DataGridViewElementStates) Method

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Source:: DataGridViewColumnCollection.cs

Source:: DataGridViewColumnCollection.cs

Source:: DataGridViewColumnCollection.cs

Important

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Returns the number of columns that meet the given filter requirements.

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

Parameters

includeFilter: DataGridViewElementStates

A bitwise combination of the DataGridViewElementStates values that represent the filter for inclusion.

Returns

Int32

The number of columns that meet the filter requirements.

Exceptions

ArgumentException

includeFilter is not a valid bitwise combination of DataGridViewElementStates values.

Examples

The following code example illustrates how to use this method to get the number of selected columns.

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

Applies to

Product	Versions
.NET Framework	2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop	3.0, 3.1, 5, 6, 7, 8, 9, 10

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