将数据表转换为列表

问题描述

    public static IList<Task> GetAllTasks()
    {
        return _taskSet.Task.ToList<Task>();
        // return sampleData.ToList();
    }

我正在将dataTable转换为列表，但出现以下错误。我如何将表转换为列表。

I am converting a dataTable to list and I getting the following error. how can i convert a table to List.

Error   1   Instance argument: cannot convert from     orkTimeTable.Dataset.TaskSet.TaskDataTable' to 'System.Collections.Generic.IEnumerable<WorkTimeTable.Model.Task>'    c:\users\huzaifa.gain\documents\visual studio 2010\Projects\WorkTimeTable\WorkTimeTable\Model\TaskDataService.cs    24  20  WorkTimeTable

Error   2   'WorkTimeTable.Dataset.TaskSet.TaskDataTable' does not contain a definition for 'ToList' and the best extension method overload 'System.Linq.Enumerable.ToList<TSource>(System.Collections.Generic.IEnumerable<TSource>)' has some invalid arguments    c:\users\huzaifa.gain\documents\visual studio 2010\Projects\WorkTimeTable\WorkTimeTable\Model\TaskDataService.cs    24  20  WorkTimeTable

推荐答案

public static IList<Task> GetAllTasks()
    {
        List<Task> taskList = new List<Task>();
        foreach (TaskSet.TaskRow r in _taskSet.Task.AsEnumerable())
            taskList.Add(new WorkTimeTable.Model.Task()
                             {
                                 Name = r.Name, Description = r.Description, ToDateTime = r.ToDate, FromDateTime = r.FromDate, TotalTime = r.TimeSpan
                             });
        return taskList;
    }

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