asp.net – UserControl有IsPostBack,但是Control没有

我正在尝试解决Visual Studio中的错误,the suggestion is to stop using UserControls and use Control instead..

所以我将我的所有UserControl转换为Control,例如：

public partial class Controls_UserManagement_GroupManager : System.Web.UI.UserControl
{
    protected void Page_Load(object sender,EventArgs e)
    {
       if (!IsPostBack)

变

public partial class Controls_UserManagement_GroupManager : System.Web.UI.Control
{
    protected void Page_Load(object sender,EventArgs e)
    {
       if (!IsPostBack)

除了没有Control.IsPostBack？

如何用Control替换UserControl？

系列

这个问题是正在进行的Stackoverflow系列中的一个,“模板化用户控件”：

> How to add a Templating to a UserControl?
> How to inherit from Control,rather than UserControl?
> UserControl has IsPostBack,but Control does not
> UserControl does not have public property named ContentTemplate
> How do i specify CodeFileBaseClass from web.config?

解决方法

Control有一个Page属性,它有一个IsPostback属性.这应该为您提供所需的价值.

public class MyControl : Control{
    protected override void OnInit( EventArgs e ){
        if( this.Page.IsPostBack ){
            // do something
        }
    }
}

MSDN Reference