Binding a bit in a ListView with a CheckBox

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So I have a database table called [PortfolioPerformance]

SQL

Portfolio, int, not null
AnnualReturn, decimal(18,2), not null
Closed, bit, not null

and a SqlDataSource

ASP.NET

<asp:SqlDataSource ID="PerformanceDataSource" runat="server"
SelectCommand="SELECT [Portfolio], [AnnualReturn], [Closed] FROM [PortfolioPerformance]"/>

and a ListView

ASP.NET

<asp:ListView ID="PerformanceListView" runat="server" DataSourceID="PerformanceDataSource">
...
<ItemTemplate>
  <tr>
    <td>
      <asp:CheckBox ID="ClosedCheckBox" runat="server" Checked='<%# Eval("Closed") %>' Enabled="false" />
    </td>
  </tr>
</ItemTemplate>

And at runtime I get a HttpException "DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'Closed'". If I changed the CheckBox to Checked='false', everything is fine, except the display is wrong.

I used a ListView so that users could edit the entry, and editing works fine (that is, the SqlDataSource has no problems with the insert, update, or delete statements, and using Bind("Closed") in the ListView templates doesn't throw exceptions). I've run the select statement in SQL Management Studio and it returns the correct results. Can anyone help?

Posted 19-Jun-12 11:32am

Matt Maynard

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Jim Jos · Answer 1 · 2012-06-19T14:44:00

You need to conver the bit to boolean please refer the following links and convert the value to boolean and then assign the value to checked property..

http://stackoverflow.com/questions/1561382/asp-net-binding-integer-to-checkboxs-checked-field[^]

http://forums.asp.net/t/917702.aspx/1[^]

http://stackoverflow.com/questions/2767352/c-sharp-convert-bit-to-boolean[^]

Anubhava Dimri · Answer 2 · 2012-06-19T18:25:00

Solution 2

By Using Ternary Operator or Case or Condition you can display the result according to your condition.

Posted 19-Jun-12 18:25pm

Anubhava Dimri

Matt Maynard · Answer 3 · 2012-06-20T06:18:00

A Case condition doesn't work. When I change the select statement to read

SQL

SELECT [Portfolio]
      ,[AnnualReturn]
      ,case
         when [Closed] = 0 then 'false'
         else 'true'
       end as 'Closed'
FROM [PortfolioPerformance]

I still get the exception.

What I don't understand is why the view seems to think there isn't a field for Closed - "'System.Data.DataRowView' does not contain a property with the name 'Closed'". I would think a conversion error would produce a different exception and error message.

Likewise, a bit conversion still needs to have the field present, so if the DataRowView can't see it, it doesn't matter if the bit is converted or not.

Binding a bit in a ListView with a CheckBox

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