System.Web.HttpParseException (0x80004005): 基类包括字段“foot”，但其类型(VANCHEER.Web.control.foot)与控件(ASP.control_foot_ascx)的类型不兼容。
   在 System.Web.Compilation.BaseTemplateCodeDomTreeGenerator.BuildFieldDeclaration(ControlBuilder builder)
   在 System.Web.Compilation.BaseTemplateCodeDomTreeGenerator.BuildSourceDataTreeFromBuilder(ControlBuilder builder, Boolean fInTemplate, Boolean topLevelControlInTemplate, PropertyEntry pse)
   在 System.Web.Compilation.BaseTemplateCodeDomTreeGenerator.BuildSourceDataTreeFromBuilder(ControlBuilder builder, Boolean fInTemplate, Boolean topLevelControlInTemplate, PropertyEntry pse)
   在 System.Web.Compilation.BaseTemplateCodeDomTreeGenerator.BuildSourceDataTreeFromBuilder(ControlBuilder builder, Boolean fInTemplate, Boolean topLevelControlInTemplate, PropertyEntry pse)
   在 System.Web.Compilation.TemplateControlCodeDomTreeGenerator.BuildMiscClassMembers()
   在 System.Web.Compilation.PageCodeDomTreeGenerator.BuildMiscClassMembers()
   在 System.Web.Compilation.BaseCodeDomTreeGenerator.BuildSourceDataTree()
   在 System.Web.Compilation.BaseCodeDomTreeGenerator.GetCodeDomTree(CodeDomProvider codeDomProvider, StringResourceBuilder stringResourceBuilder, VirtualPath virtualPath)
   在 System.Web.Compilation.BaseTemplateBuildProvider.GenerateCode(AssemblyBuilder assemblyBuilder)
   在 System.Web.Compilation.AssemblyBuilder.AddBuildProvider(BuildProvider buildProvider)