Specified cast is not valid in checkbox

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Hi there

I have a Checkbox in a Details View form in a asp.net web app. The form data source comes from a SQL table that has a column named Approved that is binded to the Checkbox. My problem is at runtime I get the error "Specified Cast is not valid".

Can someone give a solution to this issue?

Thanks in advance.

What I have tried:

on Page_Load Event I tried

foreach (DetailsViewRow DetailsViewRow in DetailsView1.Rows)
{
if (DetailsViewRow.Cells["Approved"].Value != null && (bool)DetailsViewRow.Cells["Approved"].Value)
{

}
else if (DetailsViewRow.Cells["Approved"].Value == null)
{

}
}

Posted 1-Nov-17 11:27am

Member 13495956

Updated 2-Nov-17 3:32am

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Comments

Karthik_Mahalingam 1-Nov-17 23:20pm

debug and check what is the value you are getting in
DetailsViewRow.Cells["Approved"].Value

GKP1992 1-Nov-17 23:51pm

If you want to know if the checkbox is checked or not, why not use the Checked property?

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ZurdoDev · Answer 1 · 2017-11-02T02:19:00

Quote:
Can someone give a solution to this issue?

Yes, you'll need to debug it. The error means you are trying to cast something into something it is not. For example, the string "approved" into a boolean. We cannot run your code so we cannot see what any of the values are.

You'll want to start with finding out which line of code the error is pointing to. Then it should be very, very easy to figure out what is happening.

CPallini · Answer 2 · 2017-11-02T02:27:00

Solution 2

See Representation and Identity – Fabulous Adventures In Coding[^].

Posted 2-Nov-17 2:27am

CPallini