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Problem converting VB to C# in web page

Posted on 2009-04-02
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Last Modified: 2013-12-17
Ive got a problem with a snippet of VB Im trying to convert to C#. Its complicated because the problem is buried within a .aspx page. This page has a datagrid which display records from a SQL Server database.  When I first set up this page, I had a problem that numeric values were displaying with unnecessary trailing zeros. The customer asked me to remove them. Sometimes the value will be something like 0.000012. Other times it would be 0.340000 Its in the latter example that I need to remove the trailing zeros. So its not a simple case of formatting to a fixed number of places. I wrote a function to remove trailing zeros from a string value. Heres the original code from my web page which called my function worked perfectly when I was using VB&&

<asp:TemplateColumn HeaderText="Price Each" >
   <ItemTemplate >
      <%# RemoveTrailingZeros(Container.DataItem("MyPriceEach")) %>
  </ItemTemplate>
</asp:TemplateColumn>

Now thatI am using C# as the page language, the above gives me a compilation error:

Non-invocable member 'System.Web.UI.WebControls.DataGridItem.DataItem' cannot be used like a method.

I have seen this before. It means that I have to change the round brackets for square ones. So I changed them thus:

<%# RemoveTrailingZeros(Container.DataItem["MyPriceEach"]) %>

Now I get a different error:

Cannot apply indexing with [] to an expression of type 'object'

How do I fix this?

Ian
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Question by:ipendlebury
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4 Comments
 
LVL 3

Expert Comment

by:Andy Green
ID: 24048170
Hi
Can you not format the data in your stored proc (query) to return the data in the right shape and do away with the function.
Andy
0
 

Author Comment

by:ipendlebury
ID: 24048321
Hi Andy, I wish I knew how to, but i cant find a way to remove trailing zeros in SQL.

This works very well in VB. So surely it must be a simple tweak to change the syntax for C#?

Ian
0
 
LVL 3

Accepted Solution

by:
Andy Green earned 2000 total points
ID: 24048373
I only know VB so cant help with the C# side of things. If I ever have to convert between the 2 I use http://www.codechanger.com/
You might find that because the data returned is always the same length, it is stored as char() type. Try to cast (or convert) to a Varchar(), it might work.
Andy
0
 

Author Comment

by:ipendlebury
ID: 24049070
I've fixed it now. The syntax should be:

<%# RemoveTrailingZeros(DataBinder.Eval(Container.DataItem, "MyPriceEach").ToString) %>

Thanks for you input.
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