DataColumnMappingCollection.Remove Method

Definition

Namespace:

System.Data.Common

Assembly:

System.Data.Common.dll

Removes a specified object from the collection.

Overloads

Remove(DataColumnMapping)	Removes the specified DataColumnMapping from the collection.
Remove(Object)	Removes the Object that is a DataColumnMapping from the collection.

Remove(DataColumnMapping)

Source:

DataColumnMappingCollection.cs

Removes the specified DataColumnMapping from the collection.

public:
 void Remove(System::Data::Common::DataColumnMapping ^ value);

public void Remove (System.Data.Common.DataColumnMapping value);

member this.Remove : System.Data.Common.DataColumnMapping -> unit

Public Sub Remove (value As DataColumnMapping)

Parameters

value

DataColumnMapping

The DataColumnMapping to remove.

See also

• ADO.NET Overview

Remove(Object)

Source:

DataColumnMappingCollection.cs

Removes the Object that is a DataColumnMapping from the collection.

public:
 virtual void Remove(System::Object ^ value);

public void Remove (object? value);

abstract member Remove : obj -> unit
override this.Remove : obj -> unit

Public Sub Remove (value As Object)

Parameters

value

Object

The Object that is the DataColumnMapping to remove.

Implements

Remove(Object)

Exceptions

InvalidCastException

The object specified was not a DataColumnMapping object.

ArgumentException

The object specified is not in the collection.

Examples

The following example searches for a DataColumnMapping 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));
    }
}

Public Sub ChangedMyMind()
    ' ...
    ' create mappings and mapping
    ' ...
    If mappings.Contains(CType(mapping, Object)) Then
        mappings.Remove(CType(mapping, Object))
    Else
        mappings.Add(CType(mapping, Object))
        Console.WriteLine("Index of new mapping: " + _
           mappings.IndexOf(CType(mapping, Object)).ToString())
    End If
End Sub

See also

• ADO.NET Overview