Request.setCharacterEncoding(CharacterEncoding)

Dear Team,

I have integrated one payment gateway in one of my project when i am doing some transaction its redirecting me to payment gateway page but after transaction when its redirecting me to result page ,page giving me some error please check the below link to check error.

And also i am attaching my code.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="msg.aspx.cs" Inherits="msg" %>


<%
// encoding
String CharacterEncoding = "UTF-8";
Request.setCharacterEncoding(CharacterEncoding);
String BillNo = Request.getParameter("BillNo");
String Currency = Request.getParameter("Currency");
String Amount = Request.getParameter("Amount");
String Succeed = Request.getParameter("Succeed");
String Result = Request.getParameter("Result");
String MD5info = Request.getParameter("MD5info");
String MD5key = "IWMkrbnm";
System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5();
String md5src = BillNo + Currency + Amount + Succeed + MD5key;
String md5str;
md5str = md5.getMD5ofStr(md5src);
%>
<html>
<head><title> Payment Result </title></head>
<body>
<p align="center"> Payment Result </p>
<table align="center" border="1" cellpadding="4">
<tr>
<td> BillNo:</td>
<td><%=BillNo%>
</td>
</tr>
<tr>
<td> Currency </td>
<td><%=Currency%>
</td>
</tr>
<tr>

<td> Amount </td>
<td><%=Amount%>
</td>
</tr>
<tr>
<td> Succeed </td>
<td><%=Succeed%>
</td>
</tr>
<tr>
<td> Result </td>
<td><%=Result%>
</td>
</tr>
<tr>
<td> MD5info </td>
<td><%=MD5info%>
</td>
</tr>
<tr>
<td> Calculate md5</td>
<td><%=md5str%>
</td>
</tr>
<tr>
<td> Validate md5 hash validate </td>
<td><%=(md5str.equalsIgnoreCase(MD5info)) ? "equal" : "not equal"%>
</td>
</tr>
</table>
<p align="center"><a href="#" onclick="javascript:window.close()"><font size="2" color="blove">┬┐Close┬┐</font></a></p>
</body>
</html>

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virafhAsked:
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