how to display a session value in an ASP textbox

问题:

A basic question but there is no such question on Stack Overflow (for ASP.NET)

<asp:TextBox ID="txtUserName" runat="server" Text=<% Session["UserName"] %> >

I did this a week ago, now something is wrong. It should be simple. I also tried <%= %>, it did not work either. Putting a single quote around '<% %>' gives binding error. Help

回答1:

I normally hide the implementation details from the aspx code with a property:

.cs file

public string UserName { get { return Session["UserName"]; } }

.aspx

<asp:TextBox ID="txtUserName" runat="server" Text='<%= UserName %>' >

回答2:

What I did was pulled the text box in C# code and set it text value to the session. Example:

txtUserName.text = Session["UserName"];

Use it in one of the function which checks the session values or you can use in page_load function (the default function for every page)

回答3:

Now I think your code should look like <asp:TextBox ID="txtUserName" runat="server" Text='<%# Session["UserName"] %>' >

I always forget the sintax for inline code, this information could be helpfull I think.