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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)

public event ColumnWidthChangingEventHandler ColumnWidthChanging

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.

        ListView listView1 = new ListView();
        private void 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");

			// Associate a method with the ColumnWidthChangingEvent.
            listView1.ColumnWidthChanging += 
                new ColumnWidthChangingEventHandler(listView1_ColumnWidthChanging);
            this.Controls.Add(listView1);
        }

		// Handle the ColumnWidthChangingEvent. 
        private void listView1_ColumnWidthChanging(object sender,  
            ColumnWidthChangingEventArgs e)
        {
			// Check if the new width is too big or too small. 
            if (e.NewWidth > 100 || e.NewWidth < 5)
            {
				// 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;
            }
        }
        

.NET Framework

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

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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