Class UpdateTopicExtensions

Extension methods for updating consensus topics.

Inheritance

object

UpdateTopicExtensions

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Hiero

Assembly: Hiero.dll

Syntax

public static class UpdateTopicExtensions

Methods

UpdateTopicAsync(ConsensusClient, UpdateTopicParams, Action<IConsensusContext>?)

Updates the changeable properties of a Hedera Network Topic.

Declaration

public static Task<TransactionReceipt> UpdateTopicAsync(this ConsensusClient client, UpdateTopicParams updateParameters, Action<IConsensusContext>? configure = null)

Parameters

Type	Name	Description
ConsensusClient	client	The Consensus Node Client receiving the update transaction.
UpdateTopicParams	updateParameters	The Topic update parameters, includes a required EntityId reference to the Topic to update plus a number of changeable properties of the Topic.
Action<IConsensusContext>	configure	Optional callback method providing an opportunity to modify the execution configuration for just this method call. It is executed prior to submitting the request to the network.

Returns

Type	Description
Task<TransactionReceipt>	A transaction receipt indicating success of the operation.

Examples

// Update mutable topic properties. Null fields are left unchanged.
// Requires the topic's Administrator key to sign; topics created
// without one are immutable.
var receipt = await client.UpdateTopicAsync(new UpdateTopicParams
{
    Topic = topic,
    Memo = newMemo
});
Console.WriteLine($"Update status: {receipt.Status}");

Exceptions

Type	Condition
ArgumentException	If required arguments are missing or invalid.
InvalidOperationException	If required context configuration is missing.
PrecheckException	If the gateway node refused the transaction. Only a code about the transaction itself proves it did not execute; any other code leaves the outcome unknown, so settle it by its transaction id on a mirror node rather than resubmitting it (see PrecheckException).
ConsensusException	If the outcome could not be confirmed: the transaction may have executed, so settle it by its transaction id on a mirror node rather than resubmitting it.
TransactionException	If the network rejected the update request as invalid or had missing data.