C# - Dropdownlist Filling Throws Error With Null Value?
Sep 28, 2010
I have some code which fills a dropdownlist:
pn.DataSource = Datatbl.Tables["datalist"];
pn.DataValueField = "partnumber";
pn.DataTextField = "partnumber";
pn.DataBind();
pn.Items.Insert(0, "");
pn.SelectedValue = ligne["pn"].ToString();
and when the value in the Database in null (""), it throws this error: ArgumentOutOfRangeException: 'pn' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value
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