SqlLoaderColumn Class

In This Topic

Syntax
Remarks
Example
Inheritance Hierarchy
See Also

Represents the attributes for column loading.

Syntax

Visual Basic
C#

public class SqlLoaderColumn : Devart.Common.DbLoaderColumn

'Declaration
 
Public Class SqlLoaderColumn 
   Inherits Devart.Common.DbLoaderColumn

Remarks

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

You can manually make changes to the SqlLoader.Columns collection to exclude some columns from INSERT statement generated by SqlLoader 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(SqlConnection myConnection)
{
  myConnection.Open();
  SqlLoader loader = new SqlLoader();
  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 SqlConnection)
  myConnection.Open()
  Dim loader As SqlLoader
  loader = New SqlLoader
  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.SqlServer.SqlLoaderColumn

Reference

SqlLoaderColumn Members
Devart.Data.SqlServer Namespace

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