Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

How to encrypt multiple query string values passing from gridview in asp.net?

Posted on 2014-03-18
2
Medium Priority
?
2,133 Views
Last Modified: 2014-03-19
The following syntax to encrypt single query string value passing from gridview in asp.net is working properly

<asp:HyperLink ID="HyperLink1" NavigateURL='<%# "billingitemsentrylab.aspx?pid=" + HttpUtility.UrlEncode(EncDecMK.Encrypt(Eval("pid").ToString())) %>' Text='<%# Eval("pname") %>' runat= "server">
</asp:HyperLink>

Open in new window


However the following syntax to encrypt multiple query string values from gridview is not working.

<asp:HyperLink ID="HyperLink1" NavigateURL='<%# "adminpatientlabinfo.aspx?pid=" + HttpUtility.UrlEncode(EncDecMK.Encrypt(Eval("pid").ToString()))+ "&rnumber=" HttpUtility.UrlEncode(EncDecMK.Encrypt(Eval("rnumber").ToString())) + "&financialyear=" HttpUtility.UrlEncode(EncDecMK.Encrypt(Eval("financialyear").ToString()))  %>' Text='<%# Eval("pname") %>' runat= "server">
</asp:HyperLink>

Open in new window


All parameter values i.e. pid, rnumber and financial year are integers

Can anyone correct the syntax
0
Comment
Question by:Srinivas Mantha
2 Comments
 
LVL 35

Accepted Solution

by:
Robert Schutt earned 2000 total points
ID: 39939136
It seems to me you're just missing a few + signs:
<asp:HyperLink ID="HyperLink1" NavigateURL='<%# "adminpatientlabinfo.aspx?pid=" + HttpUtility.UrlEncode(EncDecMK.Encrypt(Eval("pid").ToString())) + "&rnumber=" + HttpUtility.UrlEncode(EncDecMK.Encrypt(Eval("rnumber").ToString())) + "&financialyear=" + HttpUtility.UrlEncode(EncDecMK.Encrypt(Eval("financialyear").ToString()))  %>' Text='<%# Eval("pname") %>' runat= "server">
</asp:HyperLink>

Open in new window

0
 

Author Closing Comment

by:Srinivas Mantha
ID: 39939230
Alternatively, one can use the following syntax which also works
<asp:TemplateField>
            <ItemTemplate>
                <asp:HyperLink ID="HyperLink2" runat="server" NavigateUrl='<%# string.Format("adminpatientlabinfo.aspx?pid={0}&rnumber={1}&financialyear={2}",
                    HttpUtility.UrlEncode(EncDecMK.Encrypt(Eval("pid").ToString())), HttpUtility.UrlEncode(EncDecMK.Encrypt(Eval("rnumber").ToString())), HttpUtility.UrlEncode(EncDecMK.Encrypt(Eval("financialyear").ToString()))) %>'
                    Text='<%# Eval("pname") %>'/>
            </ItemTemplate>
        </asp:TemplateField>

Please see the following link:

http://www.aspsnippets.com/Articles/How-to-bind-and-pass-query-string-in-HyperLink-in-GridView-in-ASPNet.aspx
The above reference uses encryption and decryption code on every page. Instead, in my project i have written the code in separate C# class file and used it where necessary
For example, on aspx page where the gridview is located, I used
<%@ Import Namespace="EncryptDecryptMK" %>
And in the destination (target), aspx.cs code file I used
using EncryptDecryptMK;

lblpid.Text = EncDecMK.Decrypt(HttpUtility.UrlDecode(Request.QueryString["pid"].ToString()));
        lblrnumber.Text = EncDecMK.Decrypt(HttpUtility.UrlDecode(Request.QueryString["rnumber"].ToString()));

       lblfyear.Text = EncDecMK.Decrypt(HttpUtility.UrlDecode(Request.QueryString["financialyear"].ToString()));
0

Featured Post

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
In response to a need for security and privacy, and to continue fostering an environment members can turn to for support, solutions, and education, Experts Exchange has created anonymous question capabilities. This new feature is available to our Pr…
Is your data getting by on basic protection measures? In today’s climate of debilitating malware and ransomware—like WannaCry—that may not be enough. You need to establish more than basics, like a recovery plan that protects both data and endpoints.…
Suggested Courses

971 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question