SqlParameter Class

In This Topic

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

Syntax

Visual Basic
C#

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

public class SqlParameter : 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 SQL Server to obtain detailed information on the matter together with some advanced examples.

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

Example

The following example creates multiple instances of SqlParameter through the SqlParameterCollection within the SqlDataAdapter. These parameters are used to select data from SQL Server and place the data in the System.Data.DataSet. This example assumes that a System.Data.DataSet and a SqlDataAdapter have already been created with the appropriate schema, commands, and connection.

csharp

public void AddSqlParameters()
{
  // ...
  // create myDataSet and myDataAdapter
  // ...
  myDataAdapter.SelectCommand.Parameters.Add("DName", SqlType.VarChar, 15).Value = "DEVELOPMENT";
  myDataAdapter.SelectCommand.Parameters.Add("DeptNo", SqlType.Int).Value = 50;
  myDataAdapter.Fill(myDataSet);
}

Visual Basic

Public Sub AddSqlParameters()
  ' ...
  ' create myDataSet and myDataAdapter
  ' ...
  myDataAdapter.SelectCommand.Parameters.Add("DName", SqlType.VarChar, 15).Value = "DEVELOPMENT"
  myDataAdapter.SelectCommand.Parameters.Add("DeptNo", SqlType.Int).Value = 50
  myDataAdapter.Fill(myDataSet)
End Sub

Inheritance Hierarchy

System.Object
   System.MarshalByRefObject
      System.Data.Common.DbParameter
         Devart.Common.DbParameterBase
            Devart.Data.SqlServer.SqlParameter

Reference

SqlParameter Members
Devart.Data.SqlServer Namespace
SqlCommand Class
SqlDataAdapter Class

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