What are some examples of how to implement asp.net to return to the previous page?

In fact, to realize the function of returning to the previous page, JavaScript is mainly used.

One:

In the source code in aspx of ASP.net

Brief analysis: This uses HTML control. It only needs to call a method in javascript through an onclick event. This is the most It’s simple, and it also applies to static pages, ASP pages, etc.

2:

Use Response.write

If you have a certain understanding of ASP, then you can use it. Response.write will be familiar to you. The first method is to implement it directly in the HTML page, while this is implemented in the background environment (this statement does not seem to be very standardized, haha)

Response.write (")

Why should the value of -2 be used here? I personally think it is like this: Because on the page in asp.net, when you press a button Finally, because page.postback will be implemented in the page, the page is actually refreshed twice. What we want is the first time, so...

三:

Use Response.Redirect() or server.transfer()

Add

if(!IsPostBack) to page_load

ViewState["retu" ]=Request.UrlReferrer.ToString();

And in the return button event

Response.Redirect(ViewState["retu"].ToString());

Or Server.Transfer (ViewState["retu"].ToString());

四:

This method is probably rarely used by people, but I tried it It’s pretty good after a while.

Enter in the button’s onClick event

this.RegisterClientScriptBlock("e", "");

You can also return to the previous page

五:

Six:

Response.Write("<script>alert('prompt information');history.back()</script>");

Response.Write("< ;script>alert('alert information');top.location.href='" + PageURL + "'")

Response.Write("<script>alert('alert Information');window.location.href='" + PageURL + "'</script>");

Response.Write("<script>alert('Prompt information');window. location=window.location;</script>");

There is a little difference between using Javascript and using Response.redirect(). If you want to keep the fields you fill in when using the form data, then use history.go(); if you just return it directly without doing any operations, you can use response.redirect().

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