Captcha in Asp.Net

Add   Asp.net Folder  ---  >  Bin

Paste two files ---- >  MSCaptcha.xml   and    MSCaptcha.dll  into  folder Bin

Add a control  Captch to ToolBox--- > ( right button on toolbox---> ChooseItems --- >browse --- > select MSCaptcha.dll   from folder Bin ( new control CaptchaControl will add to ToolBox and use that Control)).

Modify your web.config file, by adding this line to

<httpHandlers>

<add verb="GET" path="CaptchaImage.axd" type="MSCaptcha.CaptchaImageHandler, MSCaptcha"/>

</ httpHandlers>

protected void btnSave_Click(object sender, EventArgs e)

    {

      

       ccJoin.ValidateCaptcha(txtCode.Text); // here check captcha control

      

         if (!ccJoin.UserValidated)

         {

             lblmsg.Text = "Invalid Captcha";

             lblmsg.ForeColor = System.Drawing.Color.Red;

         }

         else

         {

             string insert = "insert into tbl_userreg(fname,uname,password)values('"+txtfname.Text+"','"+txtuname.Text+"','"+txtpwd.Text+"')";

             obj.execute_Query(insert);

             lblmsg.Text = "Datat Entered Successfully";

             lblmsg.ForeColor = System.Drawing.Color.Green;

         }

    }