PgSqlLoaderColumn Class

In This Topic

Represents the attributes for column loading.

Syntax

Visual Basic
C#

'Declaration
 
Public Class PgSqlLoaderColumn 
   Inherits Devart.Common.DbLoaderColumn

public class PgSqlLoaderColumn : Devart.Common.DbLoaderColumn

Remarks

Each PgSqlLoader uses a Columns to maintain a collection of PgSqlLoaderColumn objects. The PgSqlLoaderColumn object represents the attributes for column loading. Every PgSqlLoaderColumn object corresponds to one of the table fields with the same name as its Name property.

You can manually make changes to the Columns collection to exclude some columns from INSERT statement generated by PgSqlLoader object.

Example

This sample shows how to perform loading of data into a table with the last column set to default value.

csharp

public void LoadData(PgSqlConnection pgConnection)
{
  pgConnection.Open();
  PgSqlLoader loader = new PgSqlLoader();
  loader.Connection = pgConnection;
  loader.TableName = "load_table";
  try
  {
    loader.CreateColumns();
    //Do not insert data in the last column
    loader.Columns.RemoveAt(loader.Columns.Count-1);
    loader.Open();
    for (int i = 1; i <= 100; i++)
    {
      loader.SetValue("id", i);
      loader.SetValue(1, "test string");
      loader.SetValue("date_field", DateTime.Now);
      loader.NextRow();
    }
    loader.Close();
  }
  finally
  {
    pgConnection.Close();
  }
}

Visual Basic

Public Sub LoadData(ByVal pgConnection As PgSqlConnection)
  pgConnection.Open()
  Dim loader As PgSqlLoader
  loader = New PgSqlLoader
  loader.Connection = pgConnection
  loader.TableName = "load_table"
  Try
    loader.CreateColumns()
    ' Do not insert data in the last column
    loader.Columns.RemoveAt(loader.Columns.Count - 1)
    loader.Open()
    Dim i As Integer
    For i = 1 To 100
      loader.SetValue("id", i)
      loader.SetValue(1, "test string")
      loader.SetValue("date_field", DateTime.Now)
      loader.NextRow()
    Next i
    loader.Close()
  Finally
    pgConnection.Close()
  End Try
End Sub

Inheritance Hierarchy

System.Object
   System.MarshalByRefObject
      Devart.Common.DbLoaderColumn
         Devart.Data.PostgreSql.PgSqlLoaderColumn

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

PgSqlLoaderColumn Members
Devart.Data.PostgreSql Namespace

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