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How to Hide QueryString Value in asp.net?

Posted By:      Posted Date: April 10, 2011    Points: 0   Category :ASP.Net
How to Hide QueryString Value in asp.net?

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نائب العميد للشؤون الأكاديمية

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remove the Rule of that rewriting ,,

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question regarding request.querystring


I have a url like this:

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if(request.querystring["comp"].tostring() != null)


//do some thing


So I got an error like: object reference not set to an instance of reference.


My problem is, I am using the same page.  So when I go from some page, I will have "comp".  but other times not.  So when there is no "comp", how do I handle it in request.querystring?


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(asp.net 2.0, c#)


I have a page requesting a qyerystring looking like this ?test=b%E4st, %E4 is the url-encoded letter ä. I can't change how this looks and encodes since I have no access to the page doing the request.

string strTest = Request.Querystring["test"].ToString();

If I then, for instance, just Response.Write(strTest) the character ä (%E4) is broken. Displayed as a question mark. I have in my web.config the requestEncoding and responseEncoding set to utf-8. That is the way I need to have it, and I can't change that.

I've looked around for a solutions for this and the issue seems to be iso-8859-1 vs utf-8 in the querystring and url-decoding. It seems the Request.Querystring automatically url-decodes the string using the default encoding, in my case utf-8. I need it to url-decode using iso-8859-1 instead. I can achieve this by altering the web.config, but as I said earlier this is not an option.

I have tried to do this:

Encoding enc = Encoding.GetEncoding(28591);
string strTest= Request.QueryString["test"];
strTest= HttpUtility.UrlDecode(strTest, enc);

Not working, since the Request.QueryString already has url-decoded the value using utf-8.

Can I somehow override the requestEncoding in the web.config? Or is the any other way of doing this?

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I'm trying to conditionally hide 2 link buttons within a Gridview(gvPosts), ModifyButton and DeleteButton.  I want the two buttons to hide in every row where the currently logged on Username is not the same as the Username in gvPosts' lbEmpID, a LinkButton control in the same row.  Unfortunately the code is hiding the buttons in every row, including the one where lbEmpID.text = Profile.Username.  My code is below, what am I doing wrong?

Thank you


        Dim lbtn As LinkButton
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            lbtn = DirectCast(rowItem.Cells(0).FindControl("lbEmpID"), LinkButton)

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                For Each rowItem1 As GridViewRow In gvPosts.Rows


Is there any way to set a default value to queryString on pageload?


I'm using Response.Redirect for empty QueryString.

   string var1 = "1";
            string var2 = "default.aspx?Page=" + var1;

I'm not sure if this is the best way to do this. Thanks in advance for any help:)

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