System.FormatException: Input string was not in a correct format.
at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
at System.Number.ParseInt64(String value, NumberStyles options, NumberFormatInfo numfmt)
at System.Convert.ToInt64(String value)
at details.Page_Load(Object sender, EventArgs e) in C:\Inetpub\vhosts\universitiespress.com\httpdocs\details.aspx.cs:line 46
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