pass value to paypal buy now button in asp.net RSS

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  asys

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  pass value to paypal buy now button in asp.net

  Jul 15, 2017 04:04 PM|asys|LINK

  i have a project that needs paypal buy now button. i have that figured out and got the code for the button which i placed in my aspx page. that all seems to be ok. 

  But i have a special field that i would like to pass on to during the checkout. ex. a unique number which then helps find the person registering corresponds to that unique number. 

  i am bit lost at this point and hope to get some help. 

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  anuj_koundal

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  Re: pass value to paypal buy now button in asp.net

  Jul 17, 2017 03:09 AM|anuj_koundal|LINK

  You will need to create button like this:

  protected void BuyButton_Click(object sender, EventArgs e)
  {
     string url = TestMode ? 
        "https://www.sandbox.paypal.com/us/cgi-bin/webscr" : 
        "https://www.paypal.com/us/cgi-bin/webscr";
  
     var builder = new StringBuilder();
     builder.Append(url);
     builder.AppendFormat("?cmd=_xclick&business={0}", HttpUtility.UrlEncode(Email));
     builder.Append("&lc=US&no_note=0&currency_code=USD");
     builder.AppendFormat("&item_name={0}", HttpUtility.UrlEncode(ItemName));
     builder.AppendFormat("&invoice={0}", TransactionId);
     builder.AppendFormat("&amount={0}", Amount);
     builder.AppendFormat("&return={0}", HttpUtility.UrlEncode(ReturnUrl));
     builder.AppendFormat("&cancel_return={0}", HttpUtility.UrlEncode(CancelUrl));
     builder.AppendFormat("&undefined_quantity={0}", Quantity);
     builder.AppendFormat("&item_number={0}", HttpUtility.UrlEncode(ItemNumber));
  
     Response.Redirect(builder.ToString());
  }

  Then for your custom field you can pass additional parameter:

  builder.AppendFormat("&MyCustomField={0}", "YourValueHere");

  Source: https://stackoverflow.com/questions/24509485/creating-buttons-with-paypal

  Anuj Koundal
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