System.Web.HttpException: The base class includes the field 'btnSendFeedback', but its type (System.Web.UI.WebControls.Button) is not compatible with the type of control (System.Web.UI.WebControls.LinkButton). ---> System.Web.HttpParseException: The base class includes the field 'btnSendFeedback', but its type (System.Web.UI.WebControls.Button) is not compatible with the type of control (System.Web.UI.WebControls.LinkButton). at System.Web.Compilation.TemplateControlCompiler.BuildFieldDeclaration(ControlBuilder builder, Boolean fGeneratedID) at System.Web.Compilation.TemplateControlCompiler.BuildSourceDataTreeFromBuilder(ControlBuilder builder, Boolean fInTemplate, PropertySetterEntry pse) at System.Web.Compilation.TemplateControlCompiler.BuildSourceDataTreeFromBuilder(ControlBuilder builder, Boolean fInTemplate, PropertySetterEntry pse) at System.Web.Compilation.TemplateControlCompiler.BuildSourceDataTreeFromBuilder(ControlBuilder builder, Boolean fInTemplate, PropertySetterEntry pse) at System.Web.Compilation.TemplateControlCompiler.BuildMiscClassMembers() at System.Web.Compilation.BaseCompiler.BuildSourceDataTree() at System.Web.Compilation.BaseCompiler.GetCompiledType() at System.Web.UI.UserControlParser.CompileIntoType() at System.Web.UI.TemplateParser.GetParserCacheItemThroughCompilation() --- End of inner exception stack trace --- at System.Web.UI.TemplateParser.GetParserCacheItemInternal(Boolean fCreateIfNotFound) at System.Web.UI.TemplateParser.GetParserCacheItemWithNewConfigPath() at System.Web.UI.TemplateParser.GetParserCacheItem() at System.Web.UI.TemplateControlParser.CompileAndGetParserCacheItem(String virtualPath, String inputFile, HttpContext context) at System.Web.UI.TemplateControlParser.GetCompiledType(String virtualPath, String inputFile, HttpContext context) at System.Web.UI.UserControlParser.GetCompiledUserControlType(String virtualPath, String inputFile, HttpContext context) at System.Web.UI.TemplateControl.LoadControl(String virtualPath) at SiteWise.Index.Page_Load(Object sender, EventArgs e)