OracleLoaderColumn Class

In This Topic

Syntax
Remarks
Example
Inheritance Hierarchy
Requirements
See Also

Represents the attributes for column loading.

Syntax

Visual Basic
C#

public class OracleLoaderColumn : Devart.Common.DbLoaderColumn

'Declaration
 
Public Class OracleLoaderColumn 
   Inherits Devart.Common.DbLoaderColumn

Remarks

Each OracleLoader uses a Columns to maintain a collection of OracleLoaderColumn objects. The OracleLoaderColumn object represents the attributes for column loading. Every OracleLoaderColumn 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 OracleLoader object.

Note: This class is available with dotConnect for Oracle Professional edition only.

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(OracleConnection myConnection)
{
  myConnection.Open();
  OracleLoader loader = new OracleLoader();
  loader.Connection = myConnection;
  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
  {
    myConnection.Close();
  }
}

Visual Basic

Public Sub LoadData(ByVal myConnection As OracleConnection)
  myConnection.Open()
  Dim loader As OracleLoader
  loader = New OracleLoader
  loader.Connection = myConnection
  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
    myConnection.Close()
  End Try
End Sub

Inheritance Hierarchy

System.Object
   System.MarshalByRefObject
      Devart.Common.DbLoaderColumn
         Devart.Data.Oracle.OracleLoaderColumn

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

OracleLoaderColumn Members
Devart.Data.Oracle Namespace

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