ListView problem

Hello Everybody,

I have a ListView control and under ItemTemplate I have following code:

Code:

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<asp:Label ID="Label1" runat="server" Text='<% #MatchCategory(dtCategories.Rows[i]["ID"].ToString().Trim(), Eval("CategoryID").ToString()) %>'></asp:Label>

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The MatchCategory method just checks if two values are equal and return true or false. Just below this code I am separately printing dtCategories.Rows[i]["ID"].ToString().Trim() and Eval("CategoryID") and can see matching values but MatchCategory method always returns false.

Code:

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<asp:LinkButton ID="lnkBtnClass" runat="server" OnClick="ShowClassPopup"><%# Eval("Name") %></asp:LinkButton>
<asp:LinkButton ID="LinkButton2" runat="server" OnClick="ShowClassPopup"><% Response.Write(dtCategories.Rows[i]["ID"].ToString().Trim()); %></asp:LinkButton>

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Here's my MatchCategory method.

Code:

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public bool MatchCategory(string CategoryID1, string CategoryID2)
{
      if (CategoryID1.Trim() == CategoryID2.Trim())
            return true;
      else
            return false;
}

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Any idea as to why I am always getting false?

Thanks.

Hey,

Have you set a breakpoint on this line:

Code:

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if (CategoryID1.Trim() == CategoryID2.Trim())

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Put both values into the watch window?

What do they come back as?

Gary

This could be very easier if I could put a breakpoint. Actually it is a Microsoft CRM online web application and it doesn't run on my local PC because of web service references etc, so I need to put the code on the server to see whats happening.

Thanks.

Hey,

Where is the Server? Is it under your control? It is not possible that you can do Remote Debugging?

Failing that, I would suggest adding some logging to your application, so that you can trace through what is happening.

Gary

Hello gep13,

The server is not under my control but I put the code to write variable values in text file in MatchCategory method. I found that 'i' is always zero, hence its always trying to match first row of dtCategories. Interestingly, just below the MatchCategory method, I am printing dtCategories[i]["ID"] and its giving all four values (dtCategories has 4 rows) but while sending to MatchCategory, 'i' is zero.

Code:

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<asp:Label ID="Label1" runat="server" Text='<&#37; #MatchCategory(i.ToString(),dtCategories.Rows[i]["ID"].ToString().Trim(), Eval("CategoryID").ToString()) %>'></asp:Label>

<asp:LinkButton ID="LinkButton2" runat="server" OnClick="ShowClassPopup"><% Response.Write(dtCategories.Rows[i]["ID"].ToString().Trim()); %></asp:LinkButton>

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Thanks.

Hey,

Response.Write's, although they seem like a good idea, they are really not. They are lnown to give spurious results, and can't be trusted. Much better to write directly to a Text property of a control, or add something like log4net to your application.

I would strongly encourage you not to do this (marked in bold):

Code:

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<asp:Label ID="Label1" runat="server" Text='<&#37; #MatchCategory(i.ToString(),dtCategories.Rows[i]["ID"].ToString().Trim(), Eval("CategoryID").ToString()) %>'></asp:Label>

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Do this work in your server side code, you will have much more control over what is going on.

Gary