Exemple #1
0
        /// <summary>
        /// Converts an IEnumerable of objects to a data table, with property names as headers and values as items
        /// </summary>
        /// <param name="objList">The IEnumerable of objects to use as a data source</param>
        /// <returns>A data table containing the object values</returns>
        public static DataTable ToDataTable(this System.Collections.Generic.IEnumerable <object> objList)
        {
            if (objList is null)
            {
                throw new ArgumentNullException(nameof(objList));
            }

            DataTable thisTable = new DataTable();

            Type objectType = objList.GetType().GenericTypeArguments[0];

            List <PropertyInfo> Properties = new List <PropertyInfo>();

            Dictionary <PropertyInfo, int> PropertyOrder = new Dictionary <PropertyInfo, int>();

            foreach (PropertyInfo thisProp in objectType.GetProperties().Reverse())
            {
                int index = 0;

                while (index < Properties.Count && PropertyOrder[Properties.ElementAt(index)] > index)
                {
                    index++;
                }
                Properties.Insert(index, thisProp);
                PropertyOrder.Add(thisProp, index);
            }

            foreach (PropertyInfo thisProperty in Properties)
            {
                DisplayNameAttribute displayNameAttribute = thisProperty.GetCustomAttribute <DisplayNameAttribute>();
                string DisplayName;
                if (displayNameAttribute != null)
                {
                    DisplayName = displayNameAttribute.DisplayName;
                }
                else
                {
                    DisplayName = thisProperty.Name;
                }

                thisTable.Columns.Add(DisplayName);
            }

            foreach (object thisObj in objList)
            {
                DataRow thisRow = thisTable.NewRow();
                int     i       = 0;
                foreach (PropertyInfo thisProperty in Properties)
                {
                    thisRow[i++] = thisProperty.GetValue(thisObj);
                }

                thisTable.Rows.Add(thisRow);
            }
            return(thisTable);
        }