对Marc的答案做了一个小更改，使其与List<string> to data table等值类型一起工作:

public static DataTable ListToDataTable<T>(IList<T> data)
{
    DataTable table = new DataTable();

    //special handling for value types and string
    if (typeof(T).IsValueType || typeof(T).Equals(typeof(string)))
    {

        DataColumn dc = new DataColumn("Value", typeof(T));
        table.Columns.Add(dc);
        foreach (T item in data)
        {
            DataRow dr = table.NewRow();
            dr[0] = item;
            table.Rows.Add(dr);
        }
    }
    else
    {
        PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(typeof(T));
        foreach (PropertyDescriptor prop in properties)
        {
            table.Columns.Add(prop.Name, Nullable.GetUnderlyingType(prop.PropertyType) ?? prop.PropertyType);
        }
        foreach (T item in data)
        {
            DataRow row = table.NewRow();
            foreach (PropertyDescriptor prop in properties)
            {
                try
                {
                    row[prop.Name] = prop.GetValue(item) ?? DBNull.Value;
                }
                catch (Exception ex)
                {
                    row[prop.Name] = DBNull.Value;
                }
            }
            table.Rows.Add(row);
        }
    }
    return table;
}

这是清单上的另一个。Cinchoo ETL -一个将枚举转换为数据表的开源库。

List<Whatever> whatever = new List<Whatever>();
var dt = whatever.AsDataTable();

免责声明:我是这个库的作者。

public DataTable ConvertToDataTable<T>(IList<T> data)
{
    PropertyDescriptorCollection properties =
        TypeDescriptor.GetProperties(typeof(T));

    DataTable table = new DataTable();

    foreach (PropertyDescriptor prop in properties)
            table.Columns.Add(prop.Name, Nullable.GetUnderlyingType(prop.PropertyType) ?? prop.PropertyType);

    foreach (T item in data)
    {
        DataRow row = table.NewRow();
        foreach (PropertyDescriptor prop in properties)
        {
           row[prop.Name] = prop.GetValue(item) ?? DBNull.Value;
        }
        table.Rows.Add(row);
    }
    return table;
}

您可以尝试以下内容

public static DataTable GetDataTableFromObjects(object[] objects)
{
    if (objects != null && objects.Length > 0)
    {
        Type t = objects[0].GetType();
        DataTable dt = new DataTable(t.Name);
        foreach (PropertyInfo pi in t.GetProperties())
        {
            dt.Columns.Add(new DataColumn(pi.Name));
        }
        foreach (var o in objects)
        {
            DataRow dr = dt.NewRow();
            foreach (DataColumn dc in dt.Columns)
            {
                dr[dc.ColumnName] = o.GetType().GetProperty(dc.ColumnName).GetValue(o, null);
            }
            dt.Rows.Add(dr);
        }
        return dt;
    }
    return null;
}

另一种方法是:

  List<WhateEver> lst = getdata();
  string json = Newtonsoft.Json.JsonConvert.SerializeObject(lst);
  DataTable pDt = JsonConvert.DeserializeObject<DataTable>(json);

将通用列表转换为数据表

使用Newtonsoft.Json;

public DataTable GenericToDataTable(IList<T> list)
{
    var json = JsonConvert.SerializeObject(list);
    DataTable dt = (DataTable)JsonConvert.DeserializeObject(json, (typeof(DataTable)));
    return dt;
}