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IColumnMappingCollection Interface

Contains a collection of DataColumnMapping objects, and is implemented by the DataColumnMappingCollection, which is used in common by .NET Framework data providers.

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

public interface IColumnMappingCollection : IList, ICollection, IEnumerable
public interface IColumnMappingCollection extends IList, ICollection, 
	IEnumerable
public interface IColumnMappingCollection extends IList, ICollection, 
	IEnumerable
Not applicable.

The IColumnMappingCollection interface enables an inheriting class to implement a ColumnMapping collection. For more information, see Setting Up DataTable and DataColumn Mappings.

An application does not create an instance of the IColumnMappingCollection interface directly, but creates an instance of a class that inherits IColumnMappingCollection.

Classes that inherit IColumnMappingCollection must implement all inherited members, and typically define additional members to add provider-specific functionality. For example, the IColumnMappingCollection interface defines the RemoveAt method. In turn, the DataTableMappingCollection class inherits this method, and defines two additional overloads of RemoveAt.

Notes to Implementers: When you inherit from the IColumnMappingCollection interface, you should implement the following constructor:

Item

Description

ColumnMappingCollection()

Creates an empty ColumnMappingCollection class.

The following example uses an instance of the derived class, DataTableMapping, to Add several DataColumnMapping objects to its ColumnMappings collection, and then displays a list of those mapped source tables. This example assumes that a DataTableMapping has already been created.


public void ShowColumnMappings() 
{
    // ...
    // create tableMapping
    // ...
    tableMapping.ColumnMappings.Add("Category Name","DataCategory");
    tableMapping.ColumnMappings.Add("Description","DataDescription");
    tableMapping.ColumnMappings.Add("Picture","DataPicture");
    Console.WriteLine("Column Mappings");
    for(int i=0;i < tableMapping.ColumnMappings.Count;i++) 
    {
        Console.WriteLine("  {0} {1}", i,
            tableMapping.ColumnMappings[i].ToString());
    }
}

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0
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