CreateParameter Method (UniCommand)

In This Topic

Creates a new instance of a UniParameter object.

Syntax

Visual Basic
C#

'Declaration
 
Public Shadows Function CreateParameter() As UniParameter

public new UniParameter CreateParameter()

Return Value

A UniParameter object.

Remarks

This method is a strongly-typed version of System.Data.IDbCommand.CreateParameter. See UniParameter to find out more ways to create a parameter.

Example

This sample shows how to create a parameter using CreateParameter function.

csharp

Public void CreateParam(UniConnection myConnection)
{
  UniCommand myCommand = new UniCommand("SELECT * FROM Test.Dept WHERE DeptNo=:Deptno",myConnection);
  UniParameter myParam = myCommand.CreateParameter();
  myParam.UniDbType = Devart.Data.Universal.UniDbType.Int;
  myParam.Value = 10;
  myParam.ParameterName = "Deptno";
  myCommand.Parameters.Add(myParam);
  myConnection.Open();
  UniDataReader myReader = null; 
  try
  {
    myReader = myCommand.ExecuteReader(); 
    while (myReader.Read())
    {
      Console.WriteLine(myReader.GetInt32(0) + ", " + myReader.GetString(1) + ", " + myReader.GetString(2));
    }
  }
  finally
  {
    myReader.Close();
    myConnection.Close();
  }
}

Visual Basic

Public Sub CreateParam(ByVal myConnection As UniConnection)
  Dim myCommand As New UniCommand("SELECT * FROM Test.Dept WHERE DeptNo=:Deptno", myConnection)
  Dim myParam As UniParameter = myCommand.CreateParameter()
  myParam.UniDbType = Devart.Data.Universal.UniDbType.Int
  myParam.Value = 10
  myParam.ParameterName = "Deptno"
  myCommand.Parameters.Add(myParam)
  myConnection.Open()
  Dim myReader As UniDataReader = Nothing
  Try
    myReader = myCommand.ExecuteReader()
    While myReader.Read()
      Console.WriteLine(myReader.GetInt32(0).ToString() + ", " _
        + myReader.GetString(1) + ", " _
        + myReader.GetString(2))
    End While
  Finally
    myReader.Close()
    myConnection.Close()
  End Try
End Sub

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

Reference

UniCommand Class
UniCommand Members
Parameters Property
UniParameter Class

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