Request for the permission of type Failed

Hi.

I want to call Server side method from java script . I have a HTML page which calls a Server side Method using javascript. i use <object> tag and set my dll path. When i  call server side method it returns error

Request for the permission of type
'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0,
Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

 

// ----------------------- DLL Method -------------------- -->

       public string GetResult()

        {

            string conStr = "Password=sa2005;Persist Security
Info=True;User ID=sa;Initial Catalog=NorthWind;Data Source=localhost";

            SqlConnection con = new SqlConnection(conSt ...