Object cannot be cast from DBNull to other types.

Question

0.00/5 (No votes)

See more:

Hi ALL,

I have got an error in Line 16 in my website..
Object cannot be cast from DBNull to other types.

Here is the code:

XML

Line 14:                   <ItemTemplate>
Line 15:
Line 16:                 <asp:CheckBox ID="chkStatus" runat="server"
Line 17:                             AutoPostBack="true" OnCheckedChanged="chkStatus_OnCheckedChanged"
Line 18:                             Checked='<%# Convert.ToBoolean(Eval("active")) %>'

Posted 5-Dec-13 2:18am

dps2305

Add a Solution

Comments

Sergey Alexandrovich Kryukov 5-Dec-13 12:07pm

It looks like a complete answer to me.
—SA

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Mike Meinz · Answer 1 · 2013-12-05T07:24:00

Solution 1

It looks like the problem is in Convert.ToBoolean(Eval("active")).

My guess is that the value of "active" in the database is null. You can't convert a null to a Boolean data type. You should check for a null value before you attempt Convert.ToBoolean.

Posted 5-Dec-13 7:24am

Mike Meinz