Modifies a cluster subnet group to include the specified list of VPC subnets.
                    The operation replaces the existing list of subnets with the new list of subnets.
            
 Declaration Syntax
 Declaration Syntax| C# | 
public ModifyClusterSubnetGroupResponse ModifyClusterSubnetGroup( ModifyClusterSubnetGroupRequest request )
 Parameters
 Parameters- request (ModifyClusterSubnetGroupRequest)
- Container for the necessary parameters to execute the ModifyClusterSubnetGroup service method.
 Return Value
 Return ValueThe response from the ModifyClusterSubnetGroup service method, as returned by Redshift.
 Exceptions
 Exceptions| Exception | Condition | 
|---|---|
| ClusterSubnetGroupNotFoundException | The cluster subnet group name does not refer to an existing cluster subnet
            group. | 
| ClusterSubnetQuotaExceededException | The request would result in user exceeding the allowed number of subnets
            in a cluster subnet groups. For information about increasing your quota, go to Limits
            in Amazon Redshift in the Amazon Redshift Management Guide. | 
| InvalidSubnetException | The requested subnet is not valid, or not all of the subnets are in the same
            VPC. | 
| SubnetAlreadyInUseException | A specified subnet is already in use by another cluster. | 
| UnauthorizedOperationException | Your account is not authorized to perform the requested operation. |