IColumnMappingCollection.IndexOf Method

Gets the location of the DataColumnMapping object with the specified source column name. The name is case-sensitive.

Namespace: System.Data
Assembly: System.Data (in system.data.dll)

int IndexOf (
	string sourceColumnName
int IndexOf (
	String sourceColumnName
function IndexOf (
	sourceColumnName : String
) : int



The case-sensitive name of the source column.

Return Value

The zero-based location of the DataColumnMapping object with the specified source column name.

The following example searches for an instance of the derived class, DataColumnMapping, with the given source column name within a DataColumnMappingCollection collection. If the DataColumnMapping exists, the example displays the name and the index of the mapping. If the mapping does not exist, the example displays an error. This example assumes that a DataColumnMappingCollection collection has been created.

public void FindDataColumnMapping() 
    // ...
    // create columnMappings
    // ...
    if (!columnMappings.Contains("Description"))
        Console.WriteLine("Error: no such table in collection.");
        Console.WriteLine("Name {0", 
        Console.WriteLine("Index: {0", 

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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