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IndexOf Method

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: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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