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ListView.ColumnHeaderCollection.Add Method

Adds a column header to the collection.

Overload List

Adds an existing ColumnHeader to the collection.

Supported by the .NET Compact Framework.

[Visual Basic] Overloads Public Overridable Function Add(ColumnHeader) As Integer
[C#] public virtual int Add(ColumnHeader);
[C++] public: virtual int Add(ColumnHeader*);
[JScript] public function Add(ColumnHeader) : int;

Adds a column header to the collection with specified text, width, and alignment settings.

Supported by the .NET Compact Framework.

[Visual Basic] Overloads Public Overridable Function Add(String, Integer, HorizontalAlignment) As ColumnHeader
[C#] public virtual ColumnHeader Add(string, int, HorizontalAlignment);
[C++] public: virtual ColumnHeader* Add(String*, int, HorizontalAlignment);
[JScript] public function Add(String, int, HorizontalAlignment) : ColumnHeader;

Example

[Visual Basic, C#, C++] The following example creates a ListView control with three ListViewItem objects specified and three ListViewItem.ListViewSubItem objects specified for each item. The example also creates ColumnHeader objects to display the subitems in details view. Two ImageList objects are also created in the code example to provide images for the ListViewItem objects. These ImageList objects are added to the LargeImageList and SmallImageList properties. The example uses the following properties in creating the ListView control.

[Visual Basic, C#, C++] This example assumes that you have added the code to a Form and call the method created in the example from the constructor or another method on the form. The example also assumes that images named MySmallImage1, MySmallImage2, MyLargeImage1, and MyLargeImage2 are located in the root directory of drive C.

[Visual Basic, C#, C++] Note   This example shows how to use one of the overloaded versions of Add. For other examples that might be available, see the individual overload topics.
[Visual Basic] 
Private Sub CreateMyListView()
    ' Create a new ListView control.
    Dim listView1 As New ListView()
    listView1.Bounds = New Rectangle(New Point(10, 10), New Size(300, 200))

    ' Set the view to show details.
    listView1.View = View.Details
    ' Allow the user to edit item text.
    listView1.LabelEdit = True
    ' Allow the user to rearrange columns.
    listView1.AllowColumnReorder = True
    ' Display check boxes.
    listView1.CheckBoxes = True
    ' Select the item and subitems when selection is made.
    listView1.FullRowSelect = True
    ' Display grid lines.
    listView1.GridLines = True
    ' Sort the items in the list in ascending order.
    listView1.Sorting = SortOrder.Ascending

    ' Create three items and three sets of subitems for each item.
    Dim item1 As New ListViewItem("item1", 0)
    ' Place a check mark next to the item.
    item1.Checked = True
    item1.SubItems.Add("1")
    item1.SubItems.Add("2")
    item1.SubItems.Add("3")
    Dim item2 As New ListViewItem("item2", 1)
    item2.SubItems.Add("4")
    item2.SubItems.Add("5")
    item2.SubItems.Add("6")
    Dim item3 As New ListViewItem("item3", 0)
    ' Place a check mark next to the item.
    item3.Checked = True
    item3.SubItems.Add("7")
    item3.SubItems.Add("8")
    item3.SubItems.Add("9")

    ' Create columns for the items and subitems.
    listView1.Columns.Add("Item Column", -2, HorizontalAlignment.Left)
    listView1.Columns.Add("Column 2", -2, HorizontalAlignment.Left)
    listView1.Columns.Add("Column 3", -2, HorizontalAlignment.Left)
    listView1.Columns.Add("Column 4", -2, HorizontalAlignment.Center)

    'Add the items to the ListView.
    listView1.Items.AddRange(New ListViewItem() {item1, item2, item3})

    ' Create two ImageList objects.
    Dim imageListSmall As New ImageList()
    Dim imageListLarge As New ImageList()

    ' Initialize the ImageList objects with bitmaps.
    imageListSmall.Images.Add(Bitmap.FromFile("C:\MySmallImage1.bmp"))
    imageListSmall.Images.Add(Bitmap.FromFile("C:\MySmallImage2.bmp"))
    imageListLarge.Images.Add(Bitmap.FromFile("C:\MyLargeImage1.bmp"))
    imageListLarge.Images.Add(Bitmap.FromFile("C:\MyLargeImage2.bmp"))

    'Assign the ImageList objects to the ListView.
    listView1.LargeImageList = imageListLarge
    listView1.SmallImageList = imageListSmall

    ' Add the ListView to the control collection.
    Me.Controls.Add(listView1)
End Sub 'CreateMyListView


[C#] 
private void CreateMyListView()
{
    // Create a new ListView control.
    ListView listView1 = new ListView();
    listView1.Bounds = new Rectangle(new Point(10,10), new Size(300,200));

    // Set the view to show details.
    listView1.View = View.Details;
    // Allow the user to edit item text.
    listView1.LabelEdit = true;
    // Allow the user to rearrange columns.
    listView1.AllowColumnReorder = true;
    // Display check boxes.
    listView1.CheckBoxes = true;
    // Select the item and subitems when selection is made.
    listView1.FullRowSelect = true;
    // Display grid lines.
    listView1.GridLines = true;
    // Sort the items in the list in ascending order.
    listView1.Sorting = SortOrder.Ascending;
                
    // Create three items and three sets of subitems for each item.
    ListViewItem item1 = new ListViewItem("item1",0);
    // Place a check mark next to the item.
    item1.Checked = true;
    item1.SubItems.Add("1");
    item1.SubItems.Add("2");
    item1.SubItems.Add("3");
    ListViewItem item2 = new ListViewItem("item2",1);
    item2.SubItems.Add("4");
    item2.SubItems.Add("5");
    item2.SubItems.Add("6");
    ListViewItem item3 = new ListViewItem("item3",0);
    // Place a check mark next to the item.
    item3.Checked = true;
    item3.SubItems.Add("7");
    item3.SubItems.Add("8");
    item3.SubItems.Add("9");

    // Create columns for the items and subitems.
    listView1.Columns.Add("Item Column", -2, HorizontalAlignment.Left);
    listView1.Columns.Add("Column 2", -2, HorizontalAlignment.Left);
    listView1.Columns.Add("Column 3", -2, HorizontalAlignment.Left);
    listView1.Columns.Add("Column 4", -2, HorizontalAlignment.Center);

    //Add the items to the ListView.
            listView1.Items.AddRange(new ListViewItem[]{item1,item2,item3});

    // Create two ImageList objects.
    ImageList imageListSmall = new ImageList();
    ImageList imageListLarge = new ImageList();

    // Initialize the ImageList objects with bitmaps.
    imageListSmall.Images.Add(Bitmap.FromFile("C:\\MySmallImage1.bmp"));
    imageListSmall.Images.Add(Bitmap.FromFile("C:\\MySmallImage2.bmp"));
    imageListLarge.Images.Add(Bitmap.FromFile("C:\\MyLargeImage1.bmp"));
    imageListLarge.Images.Add(Bitmap.FromFile("C:\\MyLargeImage2.bmp"));

    //Assign the ImageList objects to the ListView.
    listView1.LargeImageList = imageListLarge;
    listView1.SmallImageList = imageListSmall;

    // Add the ListView to the control collection.
    this.Controls.Add(listView1);
}

[C++] 
private:
    void CreateMyListView() {
        // Create a new ListView control.
        ListView* listView1 = new ListView();
        listView1->Bounds = Rectangle(Point(10, 10), System::Drawing::Size(300, 200));

        // Set the view to show details.
        listView1->View = View::Details;
        // Allow the user to edit item text.
        listView1->LabelEdit = true;
        // Allow the user to rearrange columns.
        listView1->AllowColumnReorder = true;
        // Display check boxes.
        listView1->CheckBoxes = true;
        // Select the item and subitems when selection is made.
        listView1->FullRowSelect = true;
        // Display grid lines.
        listView1->GridLines = true;
        // Sort the items in the list in ascending order.
        listView1->Sorting = SortOrder::Ascending;

        // Create three items and three sets of subitems for each item.
        ListViewItem* item1 = new ListViewItem(S"item1", 0);
        // Place a check mark next to the item.
        item1->Checked = true;
        item1->SubItems->Add(S"1");
        item1->SubItems->Add(S"2");
        item1->SubItems->Add(S"3");
        ListViewItem* item2 = new ListViewItem(S"item2", 1);
        item2->SubItems->Add(S"4");
        item2->SubItems->Add(S"5");
        item2->SubItems->Add(S"6");
        ListViewItem* item3 = new ListViewItem(S"item3", 0);
        // Place a check mark next to the item.
        item3->Checked = true;
        item3->SubItems->Add(S"7");
        item3->SubItems->Add(S"8");
        item3->SubItems->Add(S"9");

        // Create columns for the items and subitems.
        listView1->Columns->Add(S"Item Column", -2, HorizontalAlignment::Left);
        listView1->Columns->Add(S"Column 2", -2, HorizontalAlignment::Left);
        listView1->Columns->Add(S"Column 3", -2, HorizontalAlignment::Left);
        listView1->Columns->Add(S"Column 4", -2, HorizontalAlignment::Center);

        //Add the items to the ListView.

        ListViewItem* temp1 [] = {item1, item2, item3};

        listView1->Items->AddRange(temp1);

        // Create two ImageList objects.
        ImageList* imageListSmall = new ImageList();
        ImageList* imageListLarge = new ImageList();

        // Initialize the ImageList objects with bitmaps.
        imageListSmall->Images->Add(Bitmap::FromFile(S"C:\\MySmallImage1.bmp"));
        imageListSmall->Images->Add(Bitmap::FromFile(S"C:\\MySmallImage2.bmp"));
        imageListLarge->Images->Add(Bitmap::FromFile(S"C:\\MyLargeImage1.bmp"));
        imageListLarge->Images->Add(Bitmap::FromFile(S"C:\\MyLargeImage2.bmp"));

        //Assign the ImageList objects to the ListView.
        listView1->LargeImageList = imageListLarge;
        listView1->SmallImageList = imageListSmall;

        // Add the ListView to the control collection.
        this->Controls->Add(listView1);
    }

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

See Also

ListView.ColumnHeaderCollection Class | ListView.ColumnHeaderCollection Members | System.Windows.Forms Namespace

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