Server Error in '/Assessor/AssessorParcelDetail' Application.

Conversion from type 'DBNull' to type 'String' is not valid.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidCastException: Conversion from type 'DBNull' to type 'String' is not valid.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[InvalidCastException: Conversion from type 'DBNull' to type 'String' is not valid.]
   Microsoft.VisualBasic.CompilerServices.Conversions.ToString(Object Value) +1033
   ParcelDetail.clsHistoryBLL.GetViewData3(Decimal XRef, Decimal YRef, Int32 Range) in C:\Git\CCAOLegacy\ParcelDetail\clsHistoryBLL.vb:229

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
   System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor) +0
   System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments) +128
   System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +142
   System.Web.UI.WebControls.ObjectDataSourceView.InvokeMethod(ObjectDataSourceMethod method, Boolean disposeInstance, Object& instance) +889
   System.Web.UI.WebControls.ObjectDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +1829
   System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +26
   System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +134
   System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls() +105
   System.Web.UI.Control.EnsureChildControls() +106
   System.Web.UI.Control.PreRenderRecursiveInternal() +66
   System.Web.UI.Control.PreRenderRecursiveInternal() +256
   System.Web.UI.Control.PreRenderRecursiveInternal() +256
   System.Web.UI.Control.PreRenderRecursiveInternal() +256
   System.Web.UI.Control.PreRenderRecursiveInternal() +256
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6875


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4087.0