DataGridViewCellValidatingEventArgs.ColumnIndex Property

Gets the column index of the cell that needs to be validated.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in

public int ColumnIndex { get; }
/** @property */
public int get_ColumnIndex ()

public function get ColumnIndex () : int

Not applicable.

Property Value

A zero-based integer that specifies the column index of the cell that needs to be validated.

The following code example illustrates the use of this property. This example is part of a larger example available in How to: Validate Data in the Windows Forms DataGridView Control.

private void dataGridView1_CellValidating(object sender,
    DataGridViewCellValidatingEventArgs e)
    // Validate the CompanyName entry by disallowing empty strings.
    if (dataGridView1.Columns[e.ColumnIndex].Name == "CompanyName")
        if (String.IsNullOrEmpty(e.FormattedValue.ToString()))
            dataGridView1.Rows[e.RowIndex].ErrorText =
                "Company Name must not be empty";
            e.Cancel = true;

void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
    // Clear the row error in case the user presses ESC.   
    dataGridView1.Rows[e.RowIndex].ErrorText = String.Empty;

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

Community Additions