The type or namespace name 'GanttProvider' could not be found (are you missing a using directive or an assembly reference?)

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Varun
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Varun asked on 14 Mar 2023, 05:38 AM

Hello,

I am facing an issue wherein on the page following issue is coming:-

Request Failed. Try Again.

When I debugged the code then I found that the issue is actually coming due to this class file not found:- GanttProvider the actual error in the code is showing that:
The type or namespace name 'GanttProvider' could not be found (are you missing a using directive or an assembly reference?)


<%@ WebService Language="C#" Class="GanttService" %> using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Script.Services; using System.Web.Services; using System.Web.SessionState; //using Telerik.Web.UIusing Telerik.Web.UI.Gantt; [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. [System.Web.Script.Services.ScriptService] publicclassGanttService : System.Web.Services.WebService, IRequiresSessionState { private WebServiceController _controller; public WebServiceController Controller { get { if (_controller == null) { _controller = new WebServiceController(new GanttProvider()); } return _controller; } } [WebMethod(EnableSession = true)] public IEnumerable<CustomTaskData> GetTasks() { var ddd = Controller.GetTasks<CustomTaskData>(); var provider = new GanttProvider(); foreach (var item in ddd) { //item.Dependency = provider.GetSuccessorByTaskID((int)item.ID); item.Dependency = provider.GetPredecessorByTaskID((int)item.ID); } return ddd; } [WebMethod(EnableSession = true)] public IEnumerable<CustomTaskData> InsertTasks(IEnumerable<CustomTaskData> models) { var plannerRefId = HttpContext.Current.Session["GanttPlannerRefId"] != null ? Convert.ToInt32(HttpContext.Current.Session["GanttPlannerRefId"]) : 0; var plannerId = HttpContext.Current.Session["GanttPlannerID"] != null ? Convert.ToInt32(HttpContext.Current.Session["GanttPlannerID"]) : 0; var plannerType = HttpContext.Current.Session["GanttPlannerType"] != null ? HttpContext.Current.Session["GanttPlannerType"].ToString() : "project"; if (plannerType.Equals("vendor", StringComparison.InvariantCultureIgnoreCase)) { foreach (var item in models) { item.RootVendorID = plannerRefId; item.PlannerID = plannerId; } }else { foreach (var item in models) { item.ProjectID = plannerRefId; item.PlannerID = plannerId; } } return Controller.InsertTasks<CustomTaskData>(models); } [WebMethod(EnableSession = true)] public IEnumerable<CustomTaskData> UpdateTasks(IEnumerable<CustomTaskData> models) { var plannerRefId = HttpContext.Current.Session["GanttPlannerRefId"] != null ? Convert.ToInt32(HttpContext.Current.Session["GanttPlannerRefId"]) : 0; var plannerId = HttpContext.Current.Session["GanttPlannerID"] != null ? Convert.ToInt32(HttpContext.Current.Session["GanttPlannerID"]) : 0; var plannerType = HttpContext.Current.Session["GanttPlannerType"] != null ? HttpContext.Current.Session["GanttPlannerType"].ToString() : "project"; if (plannerType.Equals("vendor", StringComparison.InvariantCultureIgnoreCase)) { foreach (var item in models) { item.RootVendorID = plannerRefId; item.PlannerID = plannerId; } }else { foreach (var item in models) { item.ProjectID = plannerRefId; item.PlannerID = plannerId; } } return Controller.UpdateTasks<CustomTaskData>(models); } [WebMethod(EnableSession = true)] public IEnumerable<CustomTaskData> DeleteTasks(IEnumerable<CustomTaskData> models) { return Controller.DeleteTasks<CustomTaskData>(models); } [WebMethod(EnableSession = true)] public IEnumerable<DependencyData> GetDependencies() { return Controller.GetDependencies(); } [WebMethod(EnableSession = true)] public IEnumerable<DependencyData> InsertDependencies(IEnumerable<DependencyData> models) { return Controller.InsertDependencies(models); } [WebMethod(EnableSession = true)] public IEnumerable<DependencyData> DeleteDependencies(IEnumerable<DependencyData> models) { return Controller.DeleteDependencies(models); } [WebMethod(EnableSession = true)] public IEnumerable<Telerik.Web.UI.Gantt.ResourceData> GetResources() { return Controller.GetResources(); } [WebMethod(EnableSession = true)] public IEnumerable<AssignmentData> GetAssignments() { return Controller.GetAssignments(); } [WebMethod(EnableSession = true)] public IEnumerable<AssignmentData> InsertAssignments(IEnumerable<AssignmentData> models) { return Controller.InsertAssignments(models); } [WebMethod(EnableSession = true)] public IEnumerable<AssignmentData> UpdateAssignments(IEnumerable<AssignmentData> models) { return Controller.UpdateAssignments(models); } [WebMethod(EnableSession = true)] public IEnumerable<AssignmentData> DeleteAssignments(IEnumerable<AssignmentData> models) { return Controller.DeleteAssignments(models); } } [System.Runtime.Serialization.DataContract] publicclassCustomTaskData : TaskData { [System.Runtime.Serialization.DataMember] publicstring Description { get; set; } [System.Runtime.Serialization.DataMember] publicint? ProjectID { get; set; } [System.Runtime.Serialization.DataMember] publicint? PlannerID { get; set; } [System.Runtime.Serialization.DataMember] publicstring CusTaskType { get; set; } [System.Runtime.Serialization.DataMember] publicdouble? CusDuration { get; set; } [System.Runtime.Serialization.DataMember] publicdouble? CusActualHour { get; set; } [System.Runtime.Serialization.DataMember] publicint? VendorID { get; set; } [System.Runtime.Serialization.DataMember] publicstring Vendor { get; set; } [System.Runtime.Serialization.DataMember] publicint? RootVendorID { get; set; } [System.Runtime.Serialization.DataMember] publicstring RootVendorName { get; set; } [System.Runtime.Serialization.DataMember] publicstring ProjectName { get; set; } [System.Runtime.Serialization.DataMember] publicstring Dependency { get; set; } [System.Runtime.Serialization.DataMember] publicint? PlannerTaskID { get; set; } [System.Runtime.Serialization.DataMember] publicint? ItemRefID { get; set; } public override void CopyFrom(ITask srcTask) { base.CopyFrom(srcTask); Description = ((CustomTaskData)srcTask).Description; ProjectID = ((CustomTaskData)srcTask).ProjectID; PlannerID = ((CustomTaskData)srcTask).PlannerID; CusTaskType = ((CustomTaskData)srcTask).CusTaskType; CusDuration = ((CustomTaskData)srcTask).CusDuration; CusActualHour = ((CustomTaskData)srcTask).CusActualHour; VendorID = ((CustomTaskData)srcTask).VendorID; Vendor = ((CustomTaskData)srcTask).Vendor; RootVendorID = ((CustomTaskData)srcTask).RootVendorID; RootVendorName = ((CustomTaskData)srcTask).RootVendorName; ProjectName = ((CustomTaskData)srcTask).ProjectName; PlannerTaskID = ((CustomTaskData)srcTask).PlannerTaskID; ItemRefID = ((CustomTaskData)srcTask).ItemRefID; Dependency = ((CustomTaskData)srcTask).Dependency; } public override void CopyTo(ITask destTask) { base.CopyTo(destTask); ((CustomTaskData)destTask).Description = Description; ((CustomTaskData)destTask).ProjectID = ProjectID; ((CustomTaskData)destTask).PlannerID = PlannerID; ((CustomTaskData)destTask).CusTaskType = CusTaskType; ((CustomTaskData)destTask).CusDuration = CusDuration; ((CustomTaskData)destTask).CusActualHour = CusActualHour; ((CustomTaskData)destTask).VendorID = VendorID; ((CustomTaskData)destTask).Vendor = Vendor; ((CustomTaskData)destTask).RootVendorID = RootVendorID; ((CustomTaskData)destTask).RootVendorName = RootVendorName; ((CustomTaskData)destTask).ProjectName = ProjectName; ((CustomTaskData)destTask).PlannerTaskID = PlannerTaskID; ((CustomTaskData)destTask).ItemRefID = ItemRefID; ((CustomTaskData)destTask).Dependency = Dependency; } }

I am facing issue where I am trying to pass the object of GanntProvider class in WebServiceController constructor. It's an .ASMX file.

Kindly help me resolve this.

Thanks
Varun


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