CODEWITHSUNDEEP
asp.netgridviewhyperlinkescaping
hguser
hguser

Reputation: 36058

the DataNavigateUrlFormatString escape problem in asp.net's HyperLinkField

I am usin the HyperLinkField in my asp.net application.

However when I use the DateNavigateUrlFormation I meet some problem:

This is the code :

<asp:hyperlinkfield datanavigateurlfields="tab_name,rowid" 
  DataNavigateUrlFormatString="~\details.aspx?tab={0}&rowid={1}" />

Since sometime the rowid may contain some characters which has the specified meaning in the http,so in the server side I can not get the correct rowid.

For example,the rowid of one row maybe 

AAAAAAAXXX+BA

Now the generated url would be :

http://xxx/details.aspx?tab=tab_name&rowid=AAAAAAAXXX+BA

Since there is a character + here,I want to excape it.

I tried this:

DataNavigateUrlFormatString="~\details.aspx?tab={0}&rowid=<%#Server.HtmlEncode({1})%>"

It does not work also.

Any ideas?

Upvotes: 0

Views: 2507

Answers (3)

Denys Avilov
Denys Avilov

Reputation: 444

This aswer is based on Johan van der Slikke's one. I just added Uri.EscapeDataString:

<asp:TemplateField>
    <ItemTemplate>
        <asp:HyperLink runat="server" Text="Link" NavigateUrl='<%# String.Format("~/details.aspx?tab={0}&rowid={1}", Uri.EscapeDataString(Convert.ToString(Eval("tab_name"))), Uri.EscapeDataString(Convert.ToString(Eval("rowid")))) %>' />
    </ItemTemplate>
</asp:TemplateField>

Upvotes: 2

Johan van der Slikke
Johan van der Slikke

Reputation: 765

Use a TemplateField which does support the databinding.

<asp:TemplateField>
    <ItemTemplate>
        <asp:HyperLink runat="server" Text="Link" NavigateUrl='<%# String.Format("~/details.aspx?tab={0}&rowid={1}", Convert.ToString(Eval("tab_name")), Convert.ToString(Eval("rowid"))) %>' />
    </ItemTemplate>
</asp:TemplateField>

This way you don't need code in CodeBehind and you don't need to access columns by index (which can easily change and thus lead to problems in the future).

Upvotes: 3

Jude Cooray
Jude Cooray

Reputation: 19872

You need to handle this in the RowDataBound event.

if (e.Row.RowType == DataControlRowType.DataRow)
{ 
    e.Row.Cells[indexOfYourColumn].Text = Server.HtmlEncode(e.Row.Cells[indexOfYourColumn].Text);
}

Update

Take a look at this article

According to that you can programatically access the hyperlink field.

HyperLinkField hLink = GridView1.Columns[0] as HyperLinkField;
hLink.DataNavigateUrlFormatString = "details.aspx?pi=" + GridView1.PageIndex.ToString() + "&eID={0}";

OR I think what you need is to handle it in the RowDataBound event. 

HyperLink hLink = e.Row.Cells[0].Controls[0] as HyperLink;
hLink.NavigateUrl = "test.aspx?q=" + e.Row.Cells[0].Text;

Upvotes: 0

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