DataColumnMappingCollection.Add Method (Object)

 

Adds a DataColumnMapping object to the collection.

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

public int Add(
	object value
)

Parameters

value
Type: System.Object

A DataColumnMapping object to add to the collection.

Return Value

Type: System.Int32

The index of the DataColumnMapping object that was added to the collection.

Exception Condition
InvalidCastException

The object passed in was not a DataColumnMapping object.

The following example searches for a DataColumnMapping object within the collection. If the mapping exists in the collection, it is removed. If the mapping does not exist within the collection, it is added to the collection and its index is displayed. The example assumes that a DataColumnMappingCollection collection and a DataColumnMapping object have been created.

public void ChangedMyMind() 
{
    // ...
    // create mappings and mapping
    // ...
    if (mappings.Contains((Object) mapping))
        mappings.Remove((Object) mapping);
    else 
    {
        mappings.Add((Object) mapping);
        Console.WriteLine("Index of new mapping: "
            + mappings.IndexOf((Object) mapping));
    }
}

.NET Framework
Available since 1.1
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