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Binding CheckBox

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This is a migrated thread and some comments may be shown as answers.
Anthony
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Anthony asked on 09 Sep 2014, 03:16 PM
Hi Everyone,

I was following this Demo and run into a problem.  In the Web User Control(ascx) page, I need to Evaluate the CheckBox when editing a record.  When I click on Edit, it work great but when I click on "Add new record", I'm getting this error:

Error: Sys.WebForms.PageRequestManagerServerErrorException: Specified cast is not valid.

This is coming from the Checked function. Below is my coding.

<asp:CheckBox ID="chkbxReadOnly" runat="server"
              Checked='<%# DataBinder.Eval(Container, "DataItem.ReadOnly") %>'
             AutoPostBack="True" />

Can someone help me so  ignore the Checked function when I try to insert a record or modify the above Checked code?

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Anthony
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answered on 09 Sep 2014, 04:47 PM
I feel so stupid for not thinking  of this before but I figure out the answer.  I just want to post it in case someone else run into this issue.

Checked='<%# DataBinder.Eval(DataItem, "ReadOnly") == DBNull.Value ? false : Convert.ToBoolean(DataBinder.Eval(DataItem, "ReadOnly")) %>'
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