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DataGridViewColumnCollection.Clear Method

  • Reference

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll
Source:
DataGridViewColumnCollection.cs
Source:
DataGridViewColumnCollection.cs
Source:
DataGridViewColumnCollection.cs

Clears the collection.

public:
 virtual void Clear();
public virtual void Clear ();
abstract member Clear : unit -> unit
override this.Clear : unit -> unit
Public Overridable Sub Clear ()

Exceptions

InvalidOperationException

The associated DataGridView control is performing one of the following actions that temporarily prevents new columns from being added:

  • Selecting all cells in the control.

  • Clearing the selection.

  • Updating column DisplayIndex property values.

-or-

This method is being called from a handler for one of the following DataGridView events:

Examples

The following code example illustrates the use of this method. This example is part of a larger example available in Column Fill Mode in the Windows Forms DataGridView Control.

private void ResetDataGridView()
{
    dataGridView1.CancelEdit();
    dataGridView1.Columns.Clear();
    dataGridView1.DataSource = null;
    InitializeDataGridView();
}

Private Sub ResetDataGridView()
    dataGridView1.CancelEdit()
    dataGridView1.Columns.Clear()
    dataGridView1.DataSource = Nothing
    InitializeDataGridView()
End Sub

Applies to

See also