ColumnHeader ColumnHeader ColumnHeader ColumnHeader Class

Definition

Displays a single column header in a ListView control.

public ref class ColumnHeader : System::ComponentModel::Component, ICloneable
[System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.ColumnHeaderConverter))]
public class ColumnHeader : System.ComponentModel.Component, ICloneable
type ColumnHeader = class
    inherit Component
    interface ICloneable
Public Class ColumnHeader
Inherits Component
Implements ICloneable
Inheritance
Attributes
Implements

Examples

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 = 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 );
            
	  // Specify that each item appears on a separate line.
      ListView1->View = View::Details;

	  // 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 );
         }
      }
   }
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);

       // Specify that each item appears on a separate line.
       ListView1.View = View.Details;
       
       // 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 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)

    ' Specify that each item appears on a separate line.
    ListView1.View = View.Details

    ' 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

Remarks

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.

Constructors

ColumnHeader() ColumnHeader() ColumnHeader() ColumnHeader()

Initializes a new instance of the ColumnHeader class.

ColumnHeader(Int32) ColumnHeader(Int32) ColumnHeader(Int32) ColumnHeader(Int32)

Initializes a new instance of the ColumnHeader class with the image specified.

ColumnHeader(String) ColumnHeader(String) ColumnHeader(String) ColumnHeader(String)

Initializes a new instance of the ColumnHeader class with the image specified.

Properties

CanRaiseEvents CanRaiseEvents CanRaiseEvents CanRaiseEvents

Gets a value indicating whether the component can raise an event.

(Inherited from Component)
Container Container Container Container

Gets the IContainer that contains the Component.

(Inherited from Component)
DesignMode DesignMode DesignMode DesignMode

Gets a value that indicates whether the Component is currently in design mode.

(Inherited from Component)
DisplayIndex DisplayIndex DisplayIndex DisplayIndex

Gets or sets the display order of the column relative to the currently displayed columns.

Events Events Events Events

Gets the list of event handlers that are attached to this Component.

(Inherited from Component)
ImageIndex ImageIndex ImageIndex ImageIndex

Gets or sets the index of the image displayed in the ColumnHeader.

ImageKey ImageKey ImageKey ImageKey

Gets or sets the key of the image displayed in the column.

ImageList ImageList ImageList ImageList

Gets the image list associated with the ColumnHeader.

Index Index Index Index

Gets the location with the ListView control's ListView.ColumnHeaderCollection of this column.

ListView ListView ListView ListView

Gets the ListView control the ColumnHeader is located in.

Name Name Name Name

Gets or sets the name of the ColumnHeader.

Site Site Site Site

Gets or sets the ISite of the Component.

(Inherited from Component)
Tag Tag Tag Tag

Gets or sets an object that contains data to associate with the ColumnHeader.

Text Text Text Text

Gets or sets the text displayed in the column header.

TextAlign TextAlign TextAlign TextAlign

Gets or sets the horizontal alignment of the text displayed in the ColumnHeader.

Width Width Width Width

Gets or sets the width of the column.

Methods

AutoResize(ColumnHeaderAutoResizeStyle) AutoResize(ColumnHeaderAutoResizeStyle) AutoResize(ColumnHeaderAutoResizeStyle) AutoResize(ColumnHeaderAutoResizeStyle)

Resizes the width of the column as indicated by the resize style.

Clone() Clone() Clone() Clone()

Creates an identical copy of the current ColumnHeader that is not attached to any list view control.

CreateObjRef(Type) CreateObjRef(Type) CreateObjRef(Type) CreateObjRef(Type)

Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.

(Inherited from MarshalByRefObject)
Dispose() Dispose() Dispose() Dispose()

Releases all resources used by the Component.

(Inherited from Component)
Dispose(Boolean) Dispose(Boolean) Dispose(Boolean) Dispose(Boolean)

Disposes of the resources (other than memory) used by the ColumnHeader.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetLifetimeService() GetLifetimeService() GetLifetimeService() GetLifetimeService()

Retrieves the current lifetime service object that controls the lifetime policy for this instance.

(Inherited from MarshalByRefObject)
GetService(Type) GetService(Type) GetService(Type) GetService(Type)

Returns an object that represents a service provided by the Component or by its Container.

(Inherited from Component)
GetType() GetType() GetType() GetType()

Gets the Type of the current instance.

(Inherited from Object)
InitializeLifetimeService() InitializeLifetimeService() InitializeLifetimeService() InitializeLifetimeService()

Obtains a lifetime service object to control the lifetime policy for this instance.

(Inherited from MarshalByRefObject)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
MemberwiseClone(Boolean) MemberwiseClone(Boolean) MemberwiseClone(Boolean) MemberwiseClone(Boolean)

Creates a shallow copy of the current MarshalByRefObject object.

(Inherited from MarshalByRefObject)
ToString() ToString() ToString() ToString()

Returns a String containing the name of the Component, if any. This method should not be overridden.

Events

Disposed Disposed Disposed Disposed

Occurs when the component is disposed by a call to the Dispose() method.

(Inherited from Component)

Applies to

See also