Is it possible ot extract the Checked state from a CheckboxField within a DetailsView?

Question

Originally I had a TemplateField with a CheckBox in it but I couldn't set the checkbox Value using

Checked='<%# (bool)Bind("FieldName")  %>

or

Checked='<%# (bool)Eval("FieldName")  %>

It kept throwing an invalid cast exception. The field in the database is a bit field set to 1 or 0.

I tried switching to a checkbox field but because my update code is in the codebehind instead of using the updatecommand parameters in a datasource I can't seem to retrieve the value from the CheckBoxField to pass to my business logic.

Can any one point me on how to retrieve the value from the CheckBoxfield in a detailsview?

score 1 · Answer 1 · answered Dec 02 '11 at 17:28

1

I think that you need to use ToString() on the value from the database, since the HTML is looking for True or False, not 1 or 0.

answered Dec 02 '11 at 17:28

competent_tech

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score 1 · Accepted Answer · answered Dec 02 '11 at 17:35

1

You can't cast from int to bool. Try Convert.ToBoolean(Eval("FieldName")) Not sure if you can use Eval like that though, but that's the general idea.

answered Dec 02 '11 at 17:35

Davy8

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score 0 · Answer 3 · answered Dec 02 '11 at 17:29

0

Could you use

CheckBox ckBox = ucDetailView.FindControl("CheckBoxID") as CheckBox
if(ckBox != null){
   ckBox.Checked = (bool)datasource["FieldName"].ToString()
   //.. or some better casting code with more null checks
}

Then set it from there in code behind. Solution seemed to work here

answered Dec 02 '11 at 17:29

Crab Bucket

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I had something like this originally but I was utilizing a checboxfield as an alternate. However because the suggestion that I accepted above worked I can continue to use this method that you mentioned. – gsirianni Dec 02 '11 at 18:23

Is it possible ot extract the Checked state from a CheckboxField within a DetailsView?

3 Answers3