Default.aspx重定向

Question

I have a default.aspx page like this with the goal of redirecting differently based on the host header.

<%
if(System.Web.HttpContext.Current.Request.Url.Host == "xxx.xxx.com")
{
response.redirect ("place/subplace/xxx.aspx")
}
else
{
response.redirect ("place/xxx.aspx")
}
%>

but it is giving me the error "Compiler Error Message: BC30201: Expression expected."

What am I doing wrong?

Answer 1

In C# expressions are terminated with a semicolon ;

if (System.Web.HttpContext.Current.Request.Url.Host == "xxx.xxx.com")
{
    Response.Redirect("place/subplace/xxx.aspx"); <-- here
} 
else
{
    Response.Redirect("place/xxx.aspx"); <-- and here
}

and C# is case-sensitive. Both Response and Redirect start with a capital letter.

Edit: Since you now tagged this as VB.Net

Your code is no valid VB.net code. If it were it should read like the following:

If System.Web.HttpContext.Current.Request.Url.Host = "xxx.xxx.com" Then
    Response.Redirect("place/subplace/xxx.aspx")
Else
    Response.Redirect("place/xxx.aspx")
End If

Answer 2

When the compiler gives the error "expression expected" , it's usually a synthax error. Add a semi-column(;) after response.redirect?

Answer 3

The following works for me:

protected void Page_Load(object sender, EventArgs e)
    {
        if(System.Web.HttpContext.Current.Request.Url.Host == "xxx.xxx.com")
        {
            Response.Redirect("place/subplace/xxx.aspx");
        }
        else
        {
            Response.Redirect("place/xxx.aspx");
        }
    }

Answer 4

This worked for me. http://www.w3schools.com/asp/met_redirect.asp

Using the above link, I wrote the following lines and it executed without any problem. Notice there is no semicolon at the end. My default.aspx page just contains the following three lines.

<%
    Response.Redirect("~/portal")
%>

Possible reason is; usually language is mentioned at the top of .aspx pages or in the web.config file. If language is not mentioned, IIS uses VB.NET to compile the pages and we know that VB.NET doesn't uses semicolons to terminate the statements.