ADO.NET Provider for SingleStore

Build 20.0.7745

Updating the Data

Use the adapter's Update method to update the data. This overloaded method can take a DataTable as a parameter and will commit all the changes made to the data source. The name of the data table can be passed as an argument and can also be used to update the entire dataset in a more traditional manner. When using a data table as an argument to the Update method, the adapter evaluates the changes that have been made to the data table and executes the appropriate command for each row (INSERT, UPDATE, or DELETE).

The example below updates the ShipCity of one of the Orders entries.

C#

using (SingleStoreConnection connection = new SingleStoreConnection(connectionString)) {
  SingleStoreDataAdapter dataAdapter = new SingleStoreDataAdapter(
    "SELECT ShipName, ShipCity FROM Orders", connection);

  dataAdapter.UpdateCommand = new SingleStoreCommand(
    "UPDATE Orders SET ShipCity = @ShipCity " +
    "WHERE Id = @Id", connection);
 
  dataAdapter.UpdateCommand.Parameters.Add(new SingleStoreParameter("@ShipCity", DbType.String, "ShipCity"));
  dataAdapter.UpdateCommand.Parameters.Add(new SingleStoreParameter("@Id", DbType.String, "Id"));
  dataAdapter.UpdateCommand.Parameters[1].SourceVersion = DataRowVersion.Original;

  DataTable table = new DataTable();
  dataAdapter.Fill(table);

  DataRow firstrow = table.Rows[0];
  firstrow["ShipCity"] = "Raleigh";

  dataAdapter.Update(table);

  Console.WriteLine("Rows after update.");
  
  foreach (DataRow row in table.Rows) {
    Console.WriteLine("{0}: {1}", row["ShipName"], row["ShipCity"]);
  }
}

VB.NET

Using connection As New SingleStoreConnection(connectionString)
  Dim dataAdapter As New SingleStoreDataAdapter(
    "SELECT ShipName, ShipCity FROM Orders", connection)
  
  dataAdapter.UpdateCommand = New SingleStoreCommand(
    "UPDATE Orders SET ShipCity = @ShipCity " +
    "WHERE Id = @Id", connection)
  
  dataAdapter.UpdateCommand.Parameters.Add(new SingleStoreParameter("@ShipCity", DbType.String, "ShipCity"))
  dataAdapter.UpdateCommand.Parameters.Add(new SingleStoreParameter("@Id", DbType.String, "Id"))
  dataAdapter.UpdateCommand.Parameters(1).SourceVersion = DataRowVersion.Original
  
  Dim table As New DataTable()
  dataAdapter.Fill(table)
  
  Dim firstrow As DataRow = table.Rows(0)
  firstrow("ShipCity") = "Raleigh"
  
  dataAdapter.Update(table)
  
  Console.WriteLine("Rows after update.")
  
  For Each row As DataRow In table.Rows
    Console.WriteLine("{0}: {1}", row("ShipName"), row("ShipCity"))
  Next
End Using

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Build 20.0.7745