Modifies an existing DB subnet group. DB subnet groups must contain at least one subnet in at least two AZs in the region.
 Declaration Syntax
 Declaration Syntax| C# | 
public ModifyDBSubnetGroupResponse ModifyDBSubnetGroup( ModifyDBSubnetGroupRequest modifyDBSubnetGroupRequest )
 Parameters
 Parameters- modifyDBSubnetGroupRequest (ModifyDBSubnetGroupRequest)
- Container for the necessary parameters to execute the ModifyDBSubnetGroup service method on AmazonRDS.
 Return Value
 Return ValueThe response from the ModifyDBSubnetGroup service method, as returned by AmazonRDS.
 Exceptions
 Exceptions