asp:checkboxlist strange error

hehevn88 · Apr 28, 2012

Ok, so i'm playing around with the new checkboxlist web control. I query my database, bind it to the checkboxlist, and voila it works perfectly. I ran into a problem though when I went to actually 'collect' the data. Here's an example: Sub MyButton_OnClick(sender As Object, e As EventArgs) Dim myString As String Dim record As Integer For record=0 to myCheckBox.Items.Count - 1 If myCheckBox.Items(record).Selected Then myString = myString & myCheckBox.Items[record].Text myString = myString & "," End If Next record End Sub And this refuses to work... I get the strangest error: The operands to '&' are of types 'String' and 'System.Web.UI.WebControls.ListItemCollection' , which are not appropriate for this operator. And this error points to the line: myString = myString & myCheckBox.Items[record].Text This makes no sense to me. myString is declared as a string! So it's ludicrous that I can't use an ampersand because it is a string. I started browsing microsoft's website after I encountered this and found an example identical to what i'm trying to do. I tried it out... same thing. Here's their example (which doesn't work): http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpgenref/html/cpconcheckboxlistwebcontrol.asp Any ideas on what might be causing this error? I wouldn't think there would be any problem storing this as a string... I'm just confused. Thanks for any help or guidance you can offer. -Jer These are just some ideas, I am not real good with the checkbox yet but here goes... 1. I thought you had to use .Checked and not .Selected with a check box? I am probably wrong on that. Try this... myString += myCheckBox.Items[record].Text myString += "," ...that's usually how I build my strings and it works.Yeah the checked doesn't work in asp.net... only .selected (even for textboxes). and using myString += this myString += that is equivalent to myString = myString & this myString = myString & that So that didn't seem to work either. It's a strange one... For some reason it's having trouble storing the textbox information into a string, but that doesn't make any sense to me. That's the only way one would use it. -Jer Try this from Professional ASP.Net Wrox page 265 and 339 Must Use FindControl when Custom Column is used Dim mvC As CheckBoxList = CType(e.Item.FindControl("dftWHEREUSE"), CheckBoxList) Dim mvS As String = "" Dim objItem As ListItem For Each objItem In mvC.Items If objItem.Selected Then mvS = mvS & objItem.Value Next msglabel.Text = mvS What happens if you just do a ... Dim myString and not a Dim myString As String...any better luck with that?

asp:checkboxlist strange error

hehevn88

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