I need to select particular column based on check box list

Question

I have a check box list in that user can check or uncheck the check box.

Based on the selected check box I used to store that value by comma separated. Now the probl

Answer 1

add DynamicLibrary.cs to your project. You can get it from this link . It's a zip file that contains the dynamic link source. It's not a dll. Originally posted on ScottGu's blog here. for reference see this stack overflow link .

    using System.Linq.Dynamic;

    public class DynamicColumns : BaseEntity
    {
        public string User { get; set; }
        public string TaskId { get; set; }
        public string Project { get; set; }
        public string Priority { get; set; }
        public string TaskType { get; set; }
        public string Version { get; set; }
        public string Module { get; set; }
        public string Subject { get; set; }
        public string Details { get; set; }
        public string FileName { get; set; }
        public string Status { get; set; }          
        public string AssignedBy { get; set; }
        public string AssignedTo { get; set; }
        public int ActualTime { get; set; }
        public int LogWork { get; set; }
        public DateTime CreatedDate { get; set; }
        public DateTime AssignedDate { get; set; }
        public DateTime ResolveDate { get; set; }
        public int EstimatedTime { get; set; }
    }

    public enum EnumTasks
    {

        User = 1,
        Project = 2,
        Priority = 3,
        TaskType = 4,
        Version = 5,
        Module = 6,
        Subject = 7,
        Details = 8,          
        Status = 9,            
        Assigned_By = 10,
        Assigned_To = 11,
        Created_Date = 12,
        Assigned_Date = 13,
        Resolve_Date = 14,
        Estimated_Time = 15,
        Actual_Time = 16,
        LogWork = 17
    }

    public IQueryable DynamicSelectionColumns()
    {
        using (var db = new TrackerDataContext())
        {
            string fieldIds = "," + "4,5,3,2,6,17,11,12" + ",";

            var taskColum = Enum.GetValues(typeof(EnumTasks)).Cast<EnumTasks>().Where(e => fieldIds.Contains("," + ((int)e).ToString() + ",")).Select(e => e.ToString().Replace("_", ""));

            string select = "new (  TaskId, " + (taskColum.Count() > 0 ? string.Join(", ", taskColum) + ", " : "") + "Id )";

            return db.Task.ToList().Select(t => new DynamicColumns() { Id = t.Id, TaskId = Project != null ? Project.Alias + "-" + t.Id : t.Id.ToString(), ActualTime = t.ActualTime, AssignedBy = t.AssignedBy.ToString(), AssignedDate = t.AssignedDate, AssignedTo = t.AssignedTo.ToString(), CreatedDate = t.CreatedDate, Details = t.Details, EstimatedTime = t.EstimatedTime, FileName = t.FileName, LogWork = t.LogWork, Module = t.Module != null ? t.Module.Name : "", Priority = t.Priority != null ? t.Priority.Name : "", Project = t.Project != null ? t.Project.Name : "", ResolveDate = t.ResolveDate, Status = t.Status != null ? t.Status.Name : "", Subject = t.Subject, TaskType = t.TaskType != null ? t.TaskType.Type : "", Version = t.Version != null ? t.Version.Name : "" }).ToList().AsQueryable().Select(select);
        }
    }