Item Template in Gridview

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Hello all,

Comparing the value from Item template,it should be compare with the string.

ASP.NET

  <itemtemplate>
  <asp:ImageButton ID="ImageButton1" runat="server" CausesValidation="false" 
             CommandArgument="<% #  Container.DataItemIndex %>" CommandName="EVA" 
             ImageUrl="~/Images/cross.gif" 
             Visible='<%# Eval("EvaluationComplete") = 'NO' %>' />
 
<asp:ImageButton ID="ImageButton1" runat="server" CausesValidation="false" 
             CommandArgument="<% #  Container.DataItemIndex %>" CommandName="EVA" 
             ImageUrl="~/Images/tick.gif" 
             Visible='<%# Eval("EvaluationComplete") = 'YES' %>' />
  </itemtemplate>

Posted 31-Aug-11 20:28pm

praveena.karthi

Updated 31-Aug-11 20:37pm

Prerak Patel

v2

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Prerak Patel 1-Sep-11 2:37am

Use code block for code segment.

2 solutions

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Aswathi Narayan · Answer 1 · 2011-08-31T20:58:00

Solution 1

better way to do your problem is rename your image name as YES.gif instead of tick.gif and NO.gif instead of cross.gif

and the write coding as

ASP.NET

<asp:ImageButton ID="ImageButton1" runat="server" CausesValidation="false" 
             CommandArgument="<% #  Container.DataItemIndex %>" CommandName="EVA" 
             ImageUrl='<%"~/Images/"+ Eval("EvaluationComplete")+".gif" %>'
            />

//logic

it will call the corresponding images based on the values in database. no need to set visible true and false

Posted 31-Aug-11 20:58pm

Aswathi Narayan

Updated 31-Aug-11 21:14pm

v2

Comments

RaisKazi 1-Sep-11 3:15am

My 5 for better alternate solution.

Abhijit Jana 1-Sep-11 4:32am

This is an alternative solution. In my point of view, it's not better solution, as Renaming images might have cascading effects in overall application.

Abhijit Jana 1-Sep-11 4:22am

Why to Rename Images ? Do you think it's a better solution ? What will be the cascading effects of this, if my image is used in "n" number of different place of the same application ? :)

Abhijit Jana · Answer 2 · 2011-08-31T22:28:00

You can do Conditional Binding with Binding Expression while using Eval or Bind Expression. Try the following way.
This will work for you !

XML

<asp:TemplateField>
             <ItemTemplate>
                 <asp:Image ImageUrl='<%# "/Images/" + (Convert.ToBoolean(Eval("EvaluationComplete")) ? "tick" : "cross") + ".png" %>' runat="server" />
             </ItemTemplate>
         </asp:TemplateField>

EvaluationComplete could either True or False and based on the during binding image will change. You can do the same thing in Code Behind as well. But this is going to be good way to handle.
You can check out the output here as well Output[^]

Hope this helps !