To modify existing records, use UPDATE statements.

Update Syntax

The UPDATE statement takes as input a comma-separated list of columns and new column values as name-value pairs in the SET clause, as shown in the following example:

UPDATE <table_name> SET <select_statement> | {<column_reference> = <expression> [ , ... ]} WHERE { CardId = <expression>  } [ { AND | OR } ... ] 

<expression> ::=
  | @ <parameter> 
  | ?
  | <literal>

You can use the ExecuteNonQuery method to execute data manipulation commands and retrieve the rows affected, as shown in the following example:

C#

String connectionString = "APIKey=myApiKey;Token=myGeneratedToken;";
using (TrelloConnection connection = new TrelloConnection(connectionString)) {
  int rowsAffected;
  TrelloCommand cmd = new TrelloCommand("UPDATE Cards SET ListId='614060a64bf2e765da7bd43f' WHERE CardId = @myCardId", connection);
  cmd.Parameters.Add(new TrelloParameter("myCardId","5835594ee009411c6abdbfbd"));
  rowsAffected = cmd.ExecuteNonQuery();
}

VB.NET

Dim connectionString As [String] = "APIKey=myApiKey;Token=myGeneratedToken;"
Using connection As New TrelloConnection(connectionString)
  Dim rowsAffected As Integer
  Dim cmd As New TrelloCommand("UPDATE Cards SET ListId='614060a64bf2e765da7bd43f' WHERE CardId = @myCardId", connection)
  cmd.Parameters.Add(New TrelloParameter("myCardId", "5835594ee009411c6abdbfbd"))
  rowsAffected = cmd.ExecuteNonQuery()
End Using