UserControl有IsPostBack，但Control没有

Question

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)

变为

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？

如何将UserControl替换为Control？

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?

Answer 1

Control具有Page属性，其属性为IsPostback。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