PgSqlLoaderColumn Class

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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(); } }

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

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

Reference

PgSqlLoaderColumn Members
Devart.Data.PostgreSql Namespace

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