CONTEXT HANDLER IN ASP.NET

                SET PROPERTY OF A BUTTON

                                                     

      RIGHT CLICK ON BUTTON            PROPERTY            

~/B.ASPX   ...

     POST BACK URL  

                                                                                                                                     CLICK HERE TO SELECT YOUR PAGE

  

·         TO SEND A REQUEST OF A NEW PAGE AND DOING THE POSTBACK MEANS ALSO SUBMMITING IT’S OWN VALUE

·         IT IS THE ONLY SIGNLE SCENARIO WHICH IS IN ASP.NET VERSION 2.0, 3.5, AND 4.0  ONLY

                PRACTICAL

                      ON PAGE 1

                  

                SET PROPERTY OF A BUTTON

                                                     

      RIGHT CLICK ON BUTTON            PROPERTY            

~/B.ASPX   ...

     POST BACK URL  

                                                                                                                                     CLICK HERE TO SELECT YOUR PAGE

                                 ON SECONG PAGE DEFAULT2.ASPX

    protected void Page_Load(object sender, EventArgs e)

    {

        TextBox t1 = (TextBox)Page.PreviousPage.FindControl("t1");

        TextBox t1 = (TextBox)Page.PreviousPage.FindControl("t2");

        TextBox t2 = (TextBox)Page.PreviousPage.FindControl("t3");

        Response.Write(Convert.ToInt32(t.Text) + Convert.ToInt32(t1.Text) + Convert.ToInt32(t2.Text));

    }

       ADVANTAGES OF CONTEXT HANDLER

1.     SECURE IN THIS CASE

2.   VALUE IS NOT SHOWN IN URL\

3.   YOU CAN WRITE ANY TYPE VALUE LIKE HTML TAGS VALUES WHERE AS YOU CAN WRITE IT IN QUERY STRING

4.   IT SAFE ROUND TRIPPING

5.   HERE THE VALUE IS TREATED LIKE A VALUE TYPE NOT VARIABLE TYPE