Using ASP.net variables:
public partial class VariableTest : System.Web.UI.Page
{
public string url = "http://www.google.com";
protected void Page_Load(object sender, EventArgs e)
{
}
}
HTML Usage:<a href="<%= url %>">click here</a>Using Sessions:
These session variables might have loaded at any stage of your application. Even global.asax loading will do. Just make sure that they are available during page load.
protected void Page_Load(object sender, EventArgs e)
{
Session["newurl"] = "http://www.google.com";
}
HTML Usage:<a href="<%= Session["newURL"] %>">Click here</a>Using Web.Config:
Web.config file has the variable value as mentioned below.
<appSettings> <add key="newURL" value="http://www.google.com"/> </appSettings>HTML Usage:
<a href="<%= ConfigurationManager.AppSettings["newURL"] %>">Click Here</a>Make sure that the namepsaces are referenced from your page. Otherwise you will have to change like System.Configuration.ConfigurationManager.AppSettings["newURL"]
Using the Variables in JavaScript
Basically, all the above mentioned usages work like a string replace. So, you can even use it in javascript codes as shown below.
<a href="#" onclick="javascript:alert('<%= urls %>');return false;">Click here</a>
Using these variables in Server controls.Controls with server rendering enabled (runat="server") will not work using the methods mentioned above. Use Page.DataBind() to do the trick for you. Make sure that you are using <%# %> in this case
Server Code:
public partial class VariableTest : System.Web.UI.Page
{
public string newurl = "http://www.google.com";
protected void Page_Load(object sender, EventArgs e)
{
Page.DataBind();
}
}
Designer Code:
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl="<%# newurl %>">HyperLink</asp:HyperLink>OR
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl="<%# this.newurl %>">HyperLink</asp:HyperLink>
