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ColumnHeader Class

Displays a single column header in a ListView control.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

[TypeConverterAttribute(typeof(ColumnHeaderConverter))] 
public class ColumnHeader : Component, ICloneable
/** @attribute TypeConverterAttribute(System.Windows.Forms.ColumnHeaderConverter) */ 
public class ColumnHeader extends Component implements ICloneable
TypeConverterAttribute(System.Windows.Forms.ColumnHeaderConverter) 
public class ColumnHeader extends Component implements ICloneable
Not applicable.

A column header is an item in a ListView control that contains heading text. ColumnHeader objects can be added to a ListView using the Add method of the ListView.ColumnHeaderCollection class. To add a group of columns to a ListView, you can use the AddRange method of the ListView.ColumnHeaderCollection class. You can use the Index property of the ColumnHeader class to determine where the ColumnHeader is located in the ListView.ColumnHeaderCollection.

ColumnHeader provides the Text and TextAlign properties to set the text displayed in the control and the alignment of the text in the column header. To determine whether a ColumnHeader is associated with a ListView control, you can reference the ListView property. If you want to copy a ColumnHeader for use in another ListView control, you can use the Clone method.

The following code example demonstrates initializing a ListView control. The example creates ColumnHeader objects and sets the column header's Text, TextAlign and Width properties. The example also adds items and subitems to the ListView. To run this example paste the following code in a form and call the PopulateListView method from the form's constructor or Load event handler.

private void PopulateListView()
{
    ListView1.Width = 270;
    ListView1.Location = new System.Drawing.Point(10, 10);

    // Declare and construct the ColumnHeader objects.
    ColumnHeader header1, header2;
    header1 = new ColumnHeader();
    header2 = new ColumnHeader();

    // Set the text, alignment and width for each column header.
    header1.Text = "File name";
    header1.TextAlign = HorizontalAlignment.Left;
    header1.Width = 70;

    header2.TextAlign = HorizontalAlignment.Left;
    header2.Text = "Location";
    header2.Width = 200;

    // Add the headers to the ListView control.
    ListView1.Columns.Add(header1);
    ListView1.Columns.Add(header2);

    // Populate the ListView.Items property.
    // Set the directory to the sample picture directory.
    System.IO.DirectoryInfo dirInfo = 
        new System.IO.DirectoryInfo(
        "C:\\Documents and Settings\\All Users" +
        "\\Documents\\My Pictures\\Sample Pictures");
    

    // Get the .jpg files from the directory
    System.IO.FileInfo[] files = dirInfo.GetFiles("*.jpg");

    // Add each file name and full name including path
    // to the ListView.
    if (files != null)
    {
        foreach ( System.IO.FileInfo file in files )
        {
            ListViewItem item = new ListViewItem(file.Name);
            item.SubItems.Add(file.FullName);
            ListView1.Items.Add(item);
        }
    }
}

private void PopulateListView()
{
    listView1.set_Width(270);
    listView1.set_Location(new System.Drawing.Point(10, 10));
    // Declare and construct the ColumnHeader objects.
    ColumnHeader header1, header2;
    header1 = new ColumnHeader();
    header2 = new ColumnHeader();
    // Set the text, alignment and width for each column header.
    header1.set_Text("File name");
    header1.set_TextAlign(HorizontalAlignment.Left);
    header1.set_Width(70);

    header2.set_TextAlign(HorizontalAlignment.Left);
    header2.set_Text("Location");
    header2.set_Width(200);
    // Add the headers to the ListView control.
    listView1.get_Columns().Add(header1);
    listView1.get_Columns().Add(header2);
    // Populate the ListView.Items property.
    // Set the directory to the sample picture directory.
    System.IO.DirectoryInfo dirInfo =
        new System.IO.DirectoryInfo("C:\\Documents and Settings\\All Users"
        + "\\Documents\\My Pictures\\Sample Pictures");
    // Get the.jpg files from the directory
    System.IO.FileInfo files[] = dirInfo.GetFiles("*.jpg");
    // Add each file name and full name including path
    // to the ListView.
    if (files != null) {
        for (int iCtr = 0; iCtr < files.length; iCtr++) {
            System.IO.FileInfo file = files[iCtr];
            ListViewItem item = new ListViewItem(file.get_Name());
            item.get_SubItems().Add(file.get_FullName());
            listView1.get_Items().Add(item);
        }
    }
} //PopulateListView

System.Object
   System.MarshalByRefObject
     System.ComponentModel.Component
      System.Windows.Forms.ColumnHeader

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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