Server Error in '/' Application.

Object reference not set to an instance of an object.

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.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Line 227:            	<div class="coul mt2 fl gray5 " style="line-height:25px;">
Line 228:
Line 229:                <%if (model.Explain != "" && shopUpdateCount == 0)
Line 230:                  { %>
Line 231:                   <%=model.Explain%> 

Source File: d:\backup\D\uppershop\UpperWeb\shopindex\shopview.aspx    Line: 229

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]
   ASP.shopindex_shopview_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in d:\backup\D\uppershop\UpperWeb\shopindex\shopview.aspx:229
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +268
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +8
   System.Web.UI.Page.Render(HtmlTextWriter writer) +29
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +57
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1386

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18408