MySqlParameter Class

In This Topic

Represents a parameter to a MySqlCommand, and optionally, its mapping to System.Data.DataSet columns.

Syntax

Visual Basic
C#

'Declaration
 
Public Class MySqlParameter 
   Inherits Devart.Common.DbParameterBase
   Implements System.Data.IDataParameter, System.Data.IDbDataParameter, System.ICloneable

public class MySqlParameter : Devart.Common.DbParameterBase, System.Data.IDataParameter, System.Data.IDbDataParameter, System.ICloneable

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.

csharp

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);
}

Visual Basic

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

Reference

MySqlParameter Members
Devart.Data.MySql Namespace
MySqlCommand Class
MySqlDataAdapter Class

Send Feedback