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ListView.ColumnWidthChanging Event

Occurs when the width of a column is changing.

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

'Declaration
Public Event ColumnWidthChanging As ColumnWidthChangingEventHandler

This event allows you to check the new column width with the ColumnWidthChangingEventArgs.NewWidth property, and cancel the event if you choose by setting the Cancel property to true.

For more information about handling events, see Handling and Raising Events.

The following code example demonstrates handling the ColumnWidthChanging event. It also demonstrates the ColumnWidthChangingEventArgs.NewWidth and Cancel members. To run this example, paste the code into a Windows Form. Call InitializeListView1 from the form's constructor or Load event handler.

Private WithEvents listView1 As New ListView()

Private Sub InitializeListView1()

    ' Initialize a ListView in detail view and add some columns.
    listView1.View = View.Details
    listView1.Width = 200
    listView1.Columns.Add("Column1")
    listView1.Columns.Add("Column2")
    Me.Controls.Add(listView1)

End Sub 


' Handle the ColumnWidthChangingEvent. 
Private Sub listView1_ColumnWidthChanging(ByVal sender As Object, _
    ByVal e As ColumnWidthChangingEventArgs) _
    Handles listView1.ColumnWidthChanging

    ' Check if the new width is too big or too small. 
    If e.NewWidth > 100 OrElse e.NewWidth < 5 Then 

        ' Cancel the event and inform the user if the new 
        ' width does not meet the criteria.
        MessageBox.Show("Column width is too large or too small")
        e.Cancel = True 
    End If 

End Sub

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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