DataColumnMappingCollection.IndexOf Method (String)


Gets the location of the DataColumnMapping with the specified source column name.

Namespace:   System.Data.Common
Assembly:  System.Data (in System.Data.dll)

public int IndexOf(
	string sourceColumn


Type: System.String

The case-sensitive name of the source column.

Return Value

Type: System.Int32

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

The following example searches for a DataColumnMapping object 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}", 

.NET Framework
Available since 1.1
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