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ColumnDefinitionCollection.IndexOf Method

Returns the index position of a given ColumnDefinition within a ColumnDefinitionCollection.

Namespace:  System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)

public int IndexOf(
	ColumnDefinition value
)

Parameters

value
Type: System.Windows.Controls.ColumnDefinition

The ColumnDefinition whose index position is desired.

Return Value

Type: System.Int32
The index of value if found in the collection; otherwise, -1.

Implements

IList<T>.IndexOf(T)

The following example demonstrates how to use the IndexOf method to determine the index position of a ColumnDefinition within a ColumnDefinitionCollection.

private void insertColAt(object sender, RoutedEventArgs e)
{
    colDef1 = new ColumnDefinition();
    grid1.ColumnDefinitions.Insert(grid1.ColumnDefinitions.Count, colDef1);
    tp2.Text = "ColumnDefinition added at index position " + grid1.ColumnDefinitions.IndexOf(colDef1).ToString();
}

To view the complete sample, see How to: Manipulate Columns and Rows by Using ColumnDefinitionsCollections and RowDefinitionsCollections.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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