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Column Property
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TableItemPattern.TableItemPatternInformation.Column Property

Gets the ordinal number of the column containing the table cell or item.

Namespace:  System.Windows.Automation
Assembly:  UIAutomationClient (in UIAutomationClient.dll)

public int Column { get; }

Property Value

Type: System.Int32
A zero-based ordinal number representing the column containing the table cell or item.

In the following example, an AutomationFocusChangedEvent listener is declared to track the traversal of table items within a table container. Item properties are recorded upon each focus changed event.

/// <summary> 
/// Set up table item event listeners. 
/// </summary> 
/// <remarks> 
/// The event listener is essentially a focus change listener. 
/// Since this is a global desktop listener, a filter would be required  
/// to ignore focus change events outside the table. 
/// </remarks> 
private void SetTableItemEventListeners()
    AutomationFocusChangedEventHandler tableItemFocusChangedListener =
        new AutomationFocusChangedEventHandler(OnTableItemFocusChange);


/// <summary> 
/// Event handler for table item focus change. 
/// Can be used to track traversal of individual table items  
/// within a table. 
/// </summary> 
/// <param name="src">Object that raised the event.</param>
/// <param name="e">Event arguments.</param>
private void OnTableItemFocusChange(
    object src, AutomationFocusChangedEventArgs e)
    // Make sure the element still exists. Elements such as tooltips 
    // can disappear before the event is processed.
    AutomationElement sourceElement;
        sourceElement = src as AutomationElement;
    catch (ElementNotAvailableException)

    // Get a TableItemPattern from the source of the event.
    TableItemPattern tableItemPattern =

    if (tableItemPattern == null)

    // Get a TablePattern from the container of the current element.
    TablePattern tablePattern =

    if (tablePattern == null)

    AutomationElement tableItem = null;
        tableItem = tablePattern.GetItem(
    catch (ArgumentOutOfRangeException)
        // If the requested row coordinate is larger than the RowCount  
        // or the column coordinate is larger than the ColumnCount. 
        // -- OR -- 
        // If either of the requested row or column coordinates  
        // is less than zero. 
        // TO DO: error handling.

    // Further event processing can be done at this point. 
    // For the purposes of this sample we can just record item properties. 
    string controlType = 
    AutomationElement[] columnHeaders = 
    AutomationElement[] rowHeaders = 
    int itemRow = tableItemPattern.Current.Row;
    int itemColumn = tableItemPattern.Current.Column;
    int itemRowSpan = tableItemPattern.Current.RowSpan;
    int itemColumnSpan = tableItemPattern.Current.ColumnSpan;

/// <summary> 
/// Handles the application shutdown. 
/// </summary> 
/// <param name="args">Event arguments.</param>
protected override void OnExit(System.Windows.ExitEventArgs args)

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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