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.NET Development
.NET Framework 3.5
ColumnHeader Class
 Width Property

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This page is specific to
Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:
.NET Framework Class Library
ColumnHeader..::.Width Property

Gets or sets the width of the column.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)
Visual Basic (Declaration)
Public Property Width As Integer
Visual Basic (Usage)
Dim instance As ColumnHeader
Dim value As Integer

value = instance.Width

instance.Width = value
C#
public int Width { get; set; }
Visual C++
public:
property int Width {
    int get ();
    void set (int value);
}
JScript
public function get Width () : int
public function set Width (value : int)

Property Value

Type: System..::.Int32
The width of the column, in pixels.

This property enables you to set the Width of the ColumnHeader. The ColumnHeader can be set to adjust at run time to the column contents or heading. To adjust the width of the longest item in the column, set the Width property to -1. To autosize to the width of the column heading, set the Width property to -2.

NoteNote:

Unexpected behavior can result when the combined width of all columns exceeds 32,768 pixels.

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.

Visual Basic
Private Sub PopulateListView()
    ListView1.Width = 270
    ListView1.Location = New System.Drawing.Point(10, 10)

    ' Declare and construct the ColumnHeader objects.
    Dim header1, header2 As ColumnHeader
    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.
    Dim dirInfo As New System.IO.DirectoryInfo _
        ("C:\Documents and Settings\All Users" _
        & "\Documents\My Pictures\Sample Pictures")
    Dim file As System.IO.FileInfo

    ' Get the .jpg files from the directory
    Dim files() As System.io.FileInfo = dirInfo.GetFiles("*.jpg")

    ' Add each file name and full name including path
    ' to the ListView.
    If (files IsNot Nothing) Then
        For Each file In files
            Dim item As New ListViewItem(file.Name)
            item.SubItems.Add(file.FullName)
            ListView1.Items.Add(item)
        Next
    End If
End Sub

C#
    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);
            }
        }
    }

Visual C++
private:
   void PopulateListView()
   {
      ListView1->Width = 270;
      ListView1->Location = System::Drawing::Point( 10, 10 );

      // Declare and construct the ColumnHeader objects.
      ColumnHeader^ header1;
      ColumnHeader^ header2;
      header1 = gcnew ColumnHeader;
      header2 = gcnew 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 = gcnew System::IO::DirectoryInfo( "C:\\Documents and Settings\\All Users"
      "\\Documents\\My Pictures\\Sample Pictures" );

      // Get the .jpg files from the directory
      array<System::IO::FileInfo^>^files = dirInfo->GetFiles( "*.jpg" );

      // Add each file name and full name including path
      // to the ListView.
      if ( files != nullptr )
      {
         System::Collections::IEnumerator^ myEnum = files->GetEnumerator();
         while ( myEnum->MoveNext() )
         {
            System::IO::FileInfo^ file = safe_cast<System::IO::FileInfo^>(myEnum->Current);
            ListViewItem^ item = gcnew ListViewItem( file->Name );
            item->SubItems->Add( file->FullName );
            ListView1->Items->Add( item );
         }
      }
   }

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0
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