System.InvalidCastException: Conversion from string "" to type 'Integer' is not valid. ---> System.FormatException: Input string was not in a correct format. at Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value, NumberFormatInfo NumberFormat) at Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) --- End of inner exception stack trace --- at Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) at Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(Object Value) at MiniSite._Lambda$__6(MiniSite t) at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext() at System.Linq.Enumerable.Count[TSource](IEnumerable`1 source) at MiniSite.Page_Load(Object sender, EventArgs e) Untitled Page

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