dotConnect for MySQL Documentation
Devart.Data.MySql Namespace / MySqlParameter Class
Members Example

MySqlParameter Class
Represents a parameter to a MySqlCommand, and optionally, its mapping to System.Data.DataSet columns.
Syntax
Remarks

Parameter names are not case-sensitive.

Refer to article Using Parameters in dotConnect for MySQL to obtain detailed information on the matter together with some advanced examples.

When executing stored procedures you have to create MySqlParameter with Devart.Common.DbParameter.Direction set to ReturnValue or set ParameterCheck property to true.

Example
The following example creates multiple instances of MySqlParameter through the MySqlParameterCollection within the MySqlDataAdapter. These parameters are used to select data from MySQL and place the data in the System.Data.DataSet. This example assumes that a System.Data.DataSet and a MySqlDataAdapter have already been created with the appropriate schema, commands, and connection.
public void AddMySqlParameters()
{
  // ...
  // create myDataSet and myDataAdapter
  // ...
  myDataAdapter.SelectCommand.Parameters.Add("DName", MySqlType.VarChar, 15).Value = "DEVELOPMENT";
  myDataAdapter.SelectCommand.Parameters.Add("DeptNo", MySqlType.Int).Value = 50;
  myDataAdapter.Fill(myDataSet);
}
Public Sub AddMySqlParameters()
  ' ...
  ' create myDataSet and myDataAdapter
  ' ...
  myDataAdapter.SelectCommand.Parameters.Add("DName", MySqlType.VarChar, 15).Value = "DEVELOPMENT"
  myDataAdapter.SelectCommand.Parameters.Add("DeptNo", MySqlType.Int).Value = 50
  myDataAdapter.Fill(myDataSet)
End Sub
Inheritance Hierarchy

System.Object
   System.MarshalByRefObject
      System.Data.Common.DbParameter
         Devart.Common.DbParameterBase
            Devart.Data.MySql.MySqlParameter

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also