[InvalidCastException: Object cannot be cast from DBNull to other types.]
System.DBNull.System.IConvertible.ToInt32(IFormatProvider provider) +55
System.Convert.ToInt32(Object value) +31
WebApplication.Prodotti.SetPennelloSuccessivo(String classe, String pk) in D:\Progetti .NET\WebApplication www.pennellificiodellago.it\WebApplication\Prodotti.aspx.cs:85
WebApplication.Prodotti.Page_Load(Object sender, EventArgs e) in D:\Progetti .NET\WebApplication www.pennellificiodellago.it\WebApplication\Prodotti.aspx.cs:22
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
System.Web.UI.Control.OnLoad(EventArgs e) +97
WebApplication.AppCode.PageBaseCulture.OnLoad(EventArgs e) in D:\Progetti .NET\WebApplication www.pennellificiodellago.it\WebApplication\AppCode\PageBaseCulture.cs:56
System.Web.UI.Control.LoadRecursive() +61
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693
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