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DataGridViewColumnCollection.GetColumnCount Method

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

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

public int GetColumnCount(
	DataGridViewElementStates includeFilter
)

Parameters

includeFilter
Type: System.Windows.Forms.DataGridViewElementStates
A bitwise combination of the DataGridViewElementStates values that represent the filter for inclusion.

Return Value

Type: System.Int32
The number of columns that meet the filter requirements.

ExceptionCondition
ArgumentException

includeFilter is not a valid bitwise combination of DataGridViewElementStates values.

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");
    }
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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