ColumnHeader Třída

Definice

public ref class ColumnHeader : System::ComponentModel::Component, ICloneable

public 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

[<System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.ColumnHeaderConverter))>]
type ColumnHeader = class
    inherit Component
    interface ICloneable

Public Class ColumnHeader
Inherits Component
Implements ICloneable

Dědičnost

Object

MarshalByRefObject

Component

ColumnHeader

Atributy

TypeConverterAttribute

Implementuje

ICloneable

Příklady

Následující příklad kódu ukazuje inicializaci ListView ovládacího prvku. Příklad vytvoří ColumnHeader objekty a nastaví vlastnosti a TextAlignWidth záhlaví Textsloupce. Příklad také přidá položky a podřízené položky do ListView. Chcete-li spustit tento příklad, vložte do formuláře následující kód a zavolejte metodu PopulateListView z konstruktoru formuláře nebo Load obslužné rutiny události.

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

Poznámky

Záhlaví sloupce je položka v ovládacím ListView prvku, který obsahuje text nadpisu. ColumnHeader objekty lze přidat do objektu ListViewAdd pomocí metody ListView.ColumnHeaderCollection třídy . Chcete-li přidat skupinu sloupců do ListViewtřídy , můžete použít AddRange metodu ListView.ColumnHeaderCollection třídy . Pomocí vlastnosti třídy můžete Index určit, kde ColumnHeader se nachází v objektu ListView.ColumnHeaderCollection.ColumnHeader

ColumnHeader Text poskytuje vlastnosti a TextAlign pro nastavení textu zobrazeného v ovládacím prvku a zarovnání textu v záhlaví sloupce. Chcete-li zjistit, zda ColumnHeader je přidružen k ovládacímu ListView prvku, můžete odkazovat na ListView vlastnost . Pokud chcete zkopírovat pro použití v jiném ovládacím ColumnHeader prvku, můžete použít metodu Clone .ListView

Konstruktory

Vlastnosti

Metody

Událost

Platí pro

Viz také

• ListView
• ListView.ColumnHeaderCollection