[InvalidCastException: 型 'DBNull' から型 'String' への変換は無効です。]
Microsoft.VisualBasic.CompilerServices.Conversions.ToString(Object Value) +1033
amenity.ImageUrl.Purchase(OdbcDataReader rs) +139
amenity.MyDataBase.ExecuteSelect() +212
amenity.ImageUrlWeb.Page_Load(Object sender, EventArgs e) +151
System.Web.UI.Control.OnLoad(EventArgs e) +106
System.Web.UI.Control.LoadRecursive() +68
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3785
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