linq to sql更改数据

 <asp:FormView ID="FormView1" runat="server" DataSourceID="ObjectDataSource1" DefaultMode="Insert">
            <InsertItemTemplate>
                <asp:TextBox ID='<%bind("列1") %>' runat="server"></asp:TextBox>
                <asp:Button ID="Button1" runat="server" Text="插入数据" CommandName="Insert" />             
            </InsertItemTemplate>
        </asp:FormView>  
          <!--bind双向绑定，CommandName传递命令名-->    
        <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" TypeName="insertanimation"
             DataObjectTypeName="animation" SelectMethod="select" InsertMethod="insert" 
            UpdateMethod="updata" ConflictDetection="CompareAllValues" OldValuesParameterFormatString="oldAnimation"
              DeleteMethod="delete" ></asp:ObjectDataSource>
      <!--利用这个来进行操作TypeName="insertanimation", DataObjectTypeName="animation",SelectMethod查询
          InsertMethod插入，UpdateMethod更改， DeleteMethod删除，ConflictDetection保存在缓存中
          OldValuesParameterFormatString代表原始的实体的参数名称-->
        public partial class insertanimation
{
    public static int insert(animation animationToInsert)
    {
        VisualObjectDataContext db = new VisualObjectDataContext();
        db.animation.InsertOnSubmit(animationToInsert);//插入数据
        db.SubmitChanges();//执行插入操作
        return animationToInsert.id;//从数据库中获取新的标志值并更新id
    }
    public static class update(animantion oldAnimation,animation newAnimation)
        {
         VisualObjectDataContext db = new VisualObjectDataContext();
         db.animation.Attach(newAnimation,oldAnimation);//更新数据
        db.SubmitChanges();//执行更新数据操
}
public static void delete(animation animationtodelete)
{
    VisualObjectDataContext db = new VisualObjectDataContext();
    db.animation.Attach(animationtodelete);//允许将未更改的实体附加到数据上下
    db.animation.DeleteOnSubmit(animationtodelete);//删除数据
    db.SubmitChanges();//执行删除数据


}


    public static IEnumerable<animation> select()
    {
        VisualObjectDataContext db = new VisualObjectDataContext();
        return db.animation;
    }
}