dotConnect for MySQL Documentation
Devart.Data.MySql Namespace / MySqlLoaderColumn Class
Members Example

In This Topic
    MySqlLoaderColumn Class
    In This Topic
    Represents the attributes for column loading.
    Syntax
    'Declaration
     
    Public Class MySqlLoaderColumn 
       Inherits Devart.Common.DbLoaderColumn
    public class MySqlLoaderColumn : Devart.Common.DbLoaderColumn 
    Remarks

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

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

    Example
    This sample shows how to perform loading of data into a table with the last column set to default value.
    public void LoadData(MySqlConnection myConnection)
    {
      myConnection.Open();
      myConnection.Database = "Test";
      MySqlLoader loader = new MySqlLoader();
      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();
      }
    }
    Public Sub LoadData(ByVal myConnection As MySqlConnection)
      myConnection.Open()
      myConnection.Database = "Test"
      Dim loader As MySqlLoader
      loader = New MySqlLoader
      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.MySql.MySqlLoaderColumn

    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

    See Also