AWS SDK Version 3 for .NET
API Reference

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Modifies an existing DB subnet group. DB subnet groups must contain at least one subnet in at least two AZs in the AWS Region.


For .NET Core and PCL this operation is only available in asynchronous form. Please refer to ModifyDBSubnetGroupAsync.

Namespace: Amazon.RDS
Assembly: AWSSDK.RDS.dll
Version: 3.x.y.z


public virtual ModifyDBSubnetGroupResponse ModifyDBSubnetGroup(
         ModifyDBSubnetGroupRequest request
Type: Amazon.RDS.Model.ModifyDBSubnetGroupRequest

Container for the necessary parameters to execute the ModifyDBSubnetGroup service method.

Return Value
The response from the ModifyDBSubnetGroup service method, as returned by RDS.


DBSubnetGroupDoesNotCoverEnoughAZsException Subnets in the DB subnet group should cover at least two Availability Zones unless there is only one Availability Zone.
DBSubnetGroupNotFoundException DBSubnetGroupName doesn't refer to an existing DB subnet group.
DBSubnetQuotaExceededException The request would result in the user exceeding the allowed number of subnets in a DB subnet groups.
InvalidSubnetException The requested subnet is invalid, or multiple subnets were requested that are not all in a common VPC.
SubnetAlreadyInUseException The DB subnet is already in use in the Availability Zone.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

See Also