CreateParameter Method (PgSqlCommand)

In This Topic

Creates a new instance of a PgSqlParameter object.

Syntax

Visual Basic
C#

'Declaration
 
Public Shadows Function CreateParameter() As PgSqlParameter

public new PgSqlParameter CreateParameter()

Return Value

A PgSqlParameter object.

Remarks

This method is a strongly-typed version of System.Data.IDbCommand.CreateParameter. See PgSqlParameter 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(PgSqlConnection pgConnection)
{
  PgSqlCommand pgCommand = new PgSqlCommand("SELECT * FROM Test.Dept WHERE DeptNo=:Deptno",pgConnection);
  PgSqlParameter myParam = pgCommand.CreateParameter();
  myParam.PgSqlType = Devart.Data.PostgreSql.PgSqlType.Int;
  myParam.Value = 10;
  myParam.ParameterName = "Deptno";
  pgCommand.Parameters.Add(myParam);
  pgConnection.Open();
  PgSqlDataReader pgReader = null; 
  try
  {
    pgReader = pgCommand.ExecuteReader(); 
    while (pgReader.Read())
    {
      Console.WriteLine(pgReader.GetInt32(0) + ", " + pgReader.GetString(1) + ", " + pgReader.GetString(2));
    }
  }
  finally
  {
    pgReader.Close();
    pgConnection.Close();
  }
}

Visual Basic

Public Sub CreateParam(ByVal pgConnection As PgSqlConnection)
  Dim pgCommand As New PgSqlCommand("SELECT * FROM Test.Dept WHERE DeptNo=:Deptno", pgConnection)
  Dim myParam As PgSqlParameter = pgCommand.CreateParameter()
  myParam.PgSqlType = Devart.Data.PostgreSql.PgSqlType.Int
  myParam.Value = 10
  myParam.ParameterName = "Deptno"
  pgCommand.Parameters.Add(myParam)
  pgConnection.Open()
  Dim pgReader As PgSqlDataReader = Nothing
  Try
    pgReader = pgCommand.ExecuteReader()
    While pgReader.Read()
      Console.WriteLine(pgReader.GetInt32(0).ToString() + ", " _
        + pgReader.GetString(1) + ", " _
        + pgReader.GetString(2))
    End While
  Finally
    pgReader.Close()
    pgConnection.Close()
  End Try
End Sub

Reference

PgSqlCommand Class
PgSqlCommand Members
Parameters Property
PgSqlParameter Class

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