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ListView.ColumnHeaderCollection.Add Method

Definition

Adds a column header to the collection.

Overloads

Add(String)

Creates and adds a column with the specified text to the collection.

Add(ColumnHeader)

Adds an existing ColumnHeader to the collection.

Add(String, Int32)

Creates and adds a column with the specified text and width to the collection.

Add(String, String)

Creates and adds a column with the specified text and key to the collection.

Add(String, String, Int32)

Creates and adds a column with the specified text, key, and width to the collection.

Add(String, Int32, HorizontalAlignment)

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

Add(String, String, Int32, HorizontalAlignment, Int32)

Creates and adds a column with the specified key, aligned text, width, and image index to the collection.

Add(String, String, Int32, HorizontalAlignment, String)

Creates and adds a column with the specified key, aligned text, width, and image key to the collection.

Add(String)

Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs

Creates and adds a column with the specified text to the collection.

public virtual System.Windows.Forms.ColumnHeader Add (string text);
public virtual System.Windows.Forms.ColumnHeader Add (string? text);

Parameters

text
String

The text to display in the column header.

Returns

The ColumnHeader with the specified text that was added to the ListView.ColumnHeaderCollection.

Remarks

The column header will be added to the end of the collection.

Applies to

.NET Framework 4.8.1 és más verziók
Termék Verziók
.NET Framework 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

Add(ColumnHeader)

Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs

Adds an existing ColumnHeader to the collection.

public virtual int Add (System.Windows.Forms.ColumnHeader value);

Parameters

value
ColumnHeader

The ColumnHeader to add to the collection.

Returns

The zero-based index into the collection where the item was added.

Examples

The following code example creates a form that contains a ListView control that manually sorts items when a column in the ListView control is clicked. The example defines a class called ListViewItemComparer that implements the System.Collections.IComparer interface that performs the ListViewItem comparison. The example creates an instance of ListViewItemComparer and uses it to set the ListViewItemSorter property of the ListView control. The Sort method call in the ColumnClick event handler uses the methods defined in ListViewItemComparer to perform the sort of items, based on the column that is clicked.

using System;
using System.Windows.Forms;
using System.Drawing;
using System.Collections;

namespace ListViewSortFormNamespace
{

    public class ListViewSortForm : Form
    {
        private ListView listView1;
       
        public ListViewSortForm()
        {
            // Create ListView items to add to the control.
            ListViewItem listViewItem1 = new ListViewItem(new string[] {"Banana","a","b","c"}, -1, Color.Empty, Color.Yellow, null);
            ListViewItem listViewItem2 = new ListViewItem(new string[] {"Cherry","v","g","t"}, -1, Color.Empty, Color.Red, new Font("Microsoft Sans Serif", 8.25F, FontStyle.Regular, GraphicsUnit.Point, ((System.Byte)(0))));
            ListViewItem listViewItem3 = new ListViewItem(new string[] {"Apple","h","j","n"}, -1, Color.Empty, Color.Lime, null);
            ListViewItem listViewItem4 = new ListViewItem(new string[] {"Pear","y","u","i"}, -1, Color.Empty, Color.FromArgb(((System.Byte)(192)), ((System.Byte)(128)), ((System.Byte)(156))), null);
     
            //Initialize the ListView control and add columns to it.
            this.listView1 = new ListView();

            // Set the initial sorting type for the ListView.
            this.listView1.Sorting = SortOrder.None;
            // Disable automatic sorting to enable manual sorting.
            this.listView1.View = View.Details;
            // Add columns and set their text.
            this.listView1.Columns.Add(new ColumnHeader());
            this.listView1.Columns[0].Text = "Column 1";
            this.listView1.Columns[0].Width = 100;
            listView1.Columns.Add(new ColumnHeader());
            listView1.Columns[1].Text = "Column 2";
            listView1.Columns.Add(new ColumnHeader());
            listView1.Columns[2].Text = "Column 3";
            listView1.Columns.Add(new ColumnHeader());
            listView1.Columns[3].Text = "Column 4";
            // Suspend control logic until form is done configuring form.
            this.SuspendLayout();
            // Add Items to the ListView control.
            this.listView1.Items.AddRange(new ListViewItem[] {listViewItem1,
                listViewItem2,
                listViewItem3,
                listViewItem4});
            // Set the location and size of the ListView control.
            this.listView1.Location = new Point(10, 10);
            this.listView1.Name = "listView1";
            this.listView1.Size = new Size(300, 100);
            this.listView1.TabIndex = 0;
            // Enable editing of the items in the ListView.
            this.listView1.LabelEdit = true;
            // Connect the ListView.ColumnClick event to the ColumnClick event handler.
            this.listView1.ColumnClick += new ColumnClickEventHandler(ColumnClick);
            
            // Initialize the form.
            this.ClientSize = new Size(400, 400);
            this.Controls.AddRange(new Control[] {this.listView1});
            this.Name = "ListViewSortForm";
            this.Text = "Sorted ListView Control";
            // Resume layout of the form.
            this.ResumeLayout(false);
        }

        // ColumnClick event handler.
        private void ColumnClick(object o, ColumnClickEventArgs e)
        {
            // Set the ListViewItemSorter property to a new ListViewItemComparer 
            // object. Setting this property immediately sorts the 
            // ListView using the ListViewItemComparer object.
            this.listView1.ListViewItemSorter = new ListViewItemComparer(e.Column);
        }

        [System.STAThreadAttribute()]
        public static void Main()
        {
            Application.Run(new ListViewSortForm());
        }
    }

    // Implements the manual sorting of items by columns.
    class ListViewItemComparer : IComparer
    {
        private int col;
        public ListViewItemComparer()
        {
            col = 0;
        }
        public ListViewItemComparer(int column)
        {
            col = column;
        }
        public int Compare(object x, object y)
        {
            return String.Compare(((ListViewItem)x).SubItems[col].Text, ((ListViewItem)y).SubItems[col].Text);
        }
    }
}

Remarks

You can use this version of the Add method to add an existing ColumnHeader to the collection. If you want to create a new ColumnHeader at the time you add it to the collection, you can use the other version of the Add method.

When column headers are added, they are added to the end of the collection. To insert a column header into the collection at a specific position, use the Insert method. To add a set of column headers to the collection in a single operation, use the AddRange method.

See also

Applies to

.NET Framework 4.8.1 és más verziók
Termék Verziók
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

Add(String, Int32)

Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs

Creates and adds a column with the specified text and width to the collection.

public virtual System.Windows.Forms.ColumnHeader Add (string text, int width);
public virtual System.Windows.Forms.ColumnHeader Add (string? text, int width);

Parameters

text
String

The text of the ColumnHeader to add to the collection.

width
Int32

The width of the ColumnHeader to add to the collection.

Returns

The ColumnHeader with the specified text and width that was added to the ListView.ColumnHeaderCollection.

Remarks

The column is added at the end of the collection.

Applies to

.NET Framework 4.8.1 és más verziók
Termék Verziók
.NET Framework 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

Add(String, String)

Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs

Creates and adds a column with the specified text and key to the collection.

public virtual System.Windows.Forms.ColumnHeader Add (string key, string text);

Parameters

key
String

The key of the ColumnHeader to add to the collection.

text
String

The text of the ColumnHeader to add to the collection.

Returns

The ColumnHeader with the specified key and text that was added to the ListView.ColumnHeaderCollection.

Remarks

The Name property corresponds to the key for a column in the ListView.ColumnHeaderCollection.

The column is added at the end of the collection.

Applies to

.NET Framework 4.8.1 és más verziók
Termék Verziók
.NET Framework 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

Add(String, String, Int32)

Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs

Creates and adds a column with the specified text, key, and width to the collection.

public virtual System.Windows.Forms.ColumnHeader Add (string key, string text, int width);

Parameters

key
String

The key of the column header.

text
String

The text to display in the column header.

width
Int32

The initial width of the ColumnHeader.

Returns

The ColumnHeader with the given text, key, and width that was added to the collection.

Remarks

The Name property corresponds to the key for a column in the ListView.ColumnHeaderCollection.

The column is added at the end of the collection.

Applies to

.NET Framework 4.8.1 és más verziók
Termék Verziók
.NET Framework 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

Add(String, Int32, HorizontalAlignment)

Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs

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

public virtual System.Windows.Forms.ColumnHeader Add (string str, int width, System.Windows.Forms.HorizontalAlignment textAlign);
public virtual System.Windows.Forms.ColumnHeader Add (string text, int width, System.Windows.Forms.HorizontalAlignment textAlign);
public virtual System.Windows.Forms.ColumnHeader Add (string? text, int width, System.Windows.Forms.HorizontalAlignment textAlign);

Parameters

strtext
String

The text to display in the column header.

width
Int32

The initial width of the column header.

textAlign
HorizontalAlignment

One of the HorizontalAlignment values.

Returns

The ColumnHeader that was created and added to the collection.

Examples

The following code 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:

This example requires 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 requires that images named MySmallImage1, MySmallImage2, MyLargeImage1, and MyLargeImage2 are located in the root directory of drive 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.
    // Width of -2 indicates auto-size.
    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);
}

Remarks

You can use this version of the Add method to create a new ColumnHeader to add to the collection. The text of the new ColumnHeader added to the control is based on the text parameter. This version of the Add method also allows you to specify the width of the column and the alignment of text in the column header. If you have an existing ColumnHeader that you want to add to the collection, use the version of the Add method that accepts a ColumnHeader as its parameter.

When column headers are added, they are added to the end of the collection. To insert a column header into the collection at a specific position, use the Insert method. To add a set of column headers to the collection in a single operation, use the AddRange method.

See also

Applies to

.NET Framework 4.8.1 és más verziók
Termék Verziók
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

Add(String, String, Int32, HorizontalAlignment, Int32)

Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs

Creates and adds a column with the specified key, aligned text, width, and image index to the collection.

public virtual System.Windows.Forms.ColumnHeader Add (string key, string text, int width, System.Windows.Forms.HorizontalAlignment textAlign, int imageIndex);

Parameters

key
String

The key of the column header.

text
String

The text to display in the column header.

width
Int32

The initial width of the column header.

textAlign
HorizontalAlignment

One of the HorizontalAlignment values.

imageIndex
Int32

The index value of the image to display in the column.

Returns

The ColumnHeader with the specified key, aligned text, width, and image index that has been added to the collection.

Remarks

The Name property corresponds to the key for a column in the ListView.ColumnHeaderCollection.

The column is added at the end of the collection.

Applies to

.NET Framework 4.8.1 és más verziók
Termék Verziók
.NET Framework 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

Add(String, String, Int32, HorizontalAlignment, String)

Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs
Source:
ListView.ColumnHeaderCollection.cs

Creates and adds a column with the specified key, aligned text, width, and image key to the collection.

public virtual System.Windows.Forms.ColumnHeader Add (string key, string text, int width, System.Windows.Forms.HorizontalAlignment textAlign, string imageKey);
public virtual System.Windows.Forms.ColumnHeader Add (string? key, string? text, int width, System.Windows.Forms.HorizontalAlignment textAlign, string imageKey);

Parameters

key
String

The key of the column header.

text
String

The text to display in the column header.

width
Int32

The initial width of the column header.

textAlign
HorizontalAlignment

One of the HorizontalAlignment values.

imageKey
String

The key value of the image to display in the column header.

Returns

The ColumnHeader with the specified key, aligned text, width, and image key that has been added to the collection.

Remarks

The Name property corresponds to the key for a column in the ListView.ColumnHeaderCollection.

The column is added at the end of the collection.

Applies to

.NET Framework 4.8.1 és más verziók
Termék Verziók
.NET Framework 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9