The number of the parameters in the collection must be equal to the number of parameter placeholders within the command text, or an exception will be generated.
The following example creates multiple instances of through the MySqlParameterCollection collection within the . These parameters are used to select data within the data source and place the data in the . This code assumes that a DataSet and a MySqlDataAdapter have already been created with the appropriate schema, commands, and connection. `Public Sub AddParameters() ' ... ' create myDataSet and myDataAdapter ' ... myDataAdapter.SelectCommand.Parameters.Add("@CategoryName", MySqlDbType.VarChar, 80).Value = "toasters" myDataAdapter.SelectCommand.Parameters.Add("@SerialNum", MySqlDbType.Long).Value = 239 myDataAdapter.Fill(myDataSet) End Sub 'AddSqlParameters` `public void AddSqlParameters() { // ... // create myDataSet and myDataAdapter // ... myDataAdapter.SelectCommand.Parameters.Add("@CategoryName", MySqlDbType.VarChar, 80).Value = "toasters"; myDataAdapter.SelectCommand.Parameters.Add("@SerialNum", MySqlDbType.Long).Value = 239; myDataAdapter.Fill(myDataSet); }`