You can call this operation to retrieve the list of all Searchindex structures created for a table. The sample code is as follows:
/// <summary>
/// List Searchindex structures.
/// </summary>
/// <param name="otsClient"></param>
public static void ListSearchIndex(OTSClient otsClient)
    // Set the name of the table.
    ListSearchIndexRequest request = new ListSearchIndexRequest(TableName);
    ListSearchIndexResponse response = otsClient.ListSearchIndex(request);
    // Table Store returns all Searchindex structures created for the specified table.
    foreach (var index in response.IndexInfos)
        Console.WriteLine("indexname:" + index.IndexName);
        Console.WriteLine("tablename:" + index.TableName);