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RemoveAt Method (String)
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IColumnMappingCollection.RemoveAt Method (String)

Removes the IColumnMapping object with the specified SourceColumn name from the collection.

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

void RemoveAt(
	string sourceColumnName
)

Parameters

sourceColumnName
Type: System.String

The case-sensitive SourceColumn name.

ExceptionCondition
IndexOutOfRangeException

A DataColumnMapping object does not exist with the specified SourceColumn name.

The following example searches for an instance of the derived class, DataColumnMapping, with the given SourceColumn name within a DataColumnMappingCollection collection. If the DataColumnMapping exists, the mapping is removed. This example assumes that a DataColumnMappingCollection collection has been created.


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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0
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