has a SelectedValue which is invalid because it does not exist in the list of items

[L]

hi

i have this code that give me this error

dt2 = x.getCompany
drpCompany.DataSource = dt2
drpCompany.DataTextField = "COM_CompanyName"
drpCompany.DataValueField = "COM_CompanyCode"
drpCompany.SelectedValue = sqlreader("COM_CompanyName").ToString
drpCompany.DataBind()

'drpCompany' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value

How do I overcome this? Thanks

[Veselin Vasilev]

Hi Lui Nai Wah,

I suggest that you call the DataBind() method before setting the SelectedValue:

dt2 = x.getCompany
drpCompany.DataSource = dt2
drpCompany.DataTextField = "COM_CompanyName"
drpCompany.DataValueField = "COM_CompanyCode"
drpCompany.DataBind()
drpCompany.SelectedValue = sqlreader("COM_CompanyName").ToString

I hope this helps.

Greetings,
Veskoni
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

[L]

hi

Yes, it looks like it does not produce any error but the initial selected value should be from the reader not from the datatable. I ran thru the breakpoint and it indicate that the DataTextField overrides the intial value of the reader.

How should I go about it solving this? Thanks

[L]

hi

I have solved it. Thanks