DataColumnMappingCollection.RemoveAt Method

Definition

Namespace:

System.Data.Common

Assemblies:

netstandard.dll, System.Data.Common.dll

Removes the specified DataColumnMapping object from the collection.

Overloads

RemoveAt(Int32)	Removes the DataColumnMapping object with the specified index from the collection.
RemoveAt(String)	Removes the DataColumnMapping object with the specified source column name from the collection.

RemoveAt(Int32)

Source:

DataColumnMappingCollection.cs

Removes the DataColumnMapping object with the specified index from the collection.

C#

public void RemoveAt(int index);

Parameters

index

Int32

The zero-based index of the DataColumnMapping object to remove.

Implements

RemoveAt(Int32)

Exceptions

IndexOutOfRangeException

There is no DataColumnMapping object with the specified index.

Examples

The following example searches for a DataColumnMapping object with the given index within a DataColumnMappingCollection collection. If the DataColumnMapping exists, the mapping is removed. This example assumes that a DataColumnMappingCollection collection has been created.

C#

public void RemoveDataColumnMapping()
{
    // ...
    // create mappings
    // ...
    if (mappings.Contains(7))
        mappings.RemoveAt(7);
}

See also

• ADO.NET Overview

RemoveAt(String)

Source:

DataColumnMappingCollection.cs

Removes the DataColumnMapping object with the specified source column name from the collection.

C#

public void RemoveAt(string sourceColumn);

Parameters

sourceColumn

String

The case-sensitive source column name.

Implements

RemoveAt(String)

Exceptions

IndexOutOfRangeException

There is no DataColumnMapping object with the specified source column name.

Examples

The following example searches for a DataColumnMapping object with the given source column name within a DataColumnMappingCollection collection. If the DataColumnMapping exists, the mapping is removed. This example assumes that a DataColumnMappingCollection collection has been created.

C#

public void RemoveDataColumnMapping()
{
    // ...
    // create columnMappings
    // ...
    if (columnMappings.Contains("Picture"))
        columnMappings.RemoveAt("Picture");
}

See also

• ADO.NET Overview