/***************************************************************
*
*?文?件?名:?SharpMapHeatlayerHelper
*
*?作?者:?毛健
*
*?創作日期:?2016/11/16?17:21:35
*
*?備?注:?靜態類，用于熱圖（heatlayer）的相關操作。
*
***************************************************************/

using?DCMS.Maps;
using?DCMS.Maps.WindowsForms;
using?DCMS.Maps.WindowsForms.Markers;
using?GeoAPI.Geometries;
using?SharpMap.Data.Providers;
using?SharpMap.layers;
using?SharpMap.Rendering.Thematics;
using?System;
using?System.Collections.Generic;
using?System.Data;
using?System.Diagnostics;
using?System.Drawing;
using?System.Linq;
using?System.Reflection;
using?System.Text;
using?System.Windows.Forms;

namespace?WebMap
{
????///?

????///?SharpMap的熱圖輔助類
????///?

????internal?static?class?SharpMapHeatlayerHelper
????{
????????///?

????????///?檢查數據表合法性
????????///?

????????///?數據表
????????///?true為合法，false為非法
????????private?static?bool?CheckHeatDataVarification（List?heatPoints）
????????{
????????????var?pointsCount?=?heatPoints.Count;
????????????//數據行數合法性
????????????if?（pointsCount?<=?0）
????????????{
????????????????MessageBox.Show（“您的數據表中沒有數據，請檢查“）;
????????????????return?false;
????????????}

????????????//①這個方法不是很好，因為類型有可能變動。
????????????//Int32?fieldCount?=?typeof（HeatPoints）.GetFields（）.Length;

????????????//②在確保泛型中有元素的情況下使用反射。
????????????Dictionary?dictionary?=?new?Dictionary（）;
????????????dictionary.Add（“Lng“?typeof（double））;
????????????dictionary.Add（“Lat“?typeof（double））;
????????????dictionary.Add（“Value“?typeof（int））;
????????????string[]?defaultPropertyNames?=?dictionary.Keys.ToArray（）;
????????????//字段對象結合
????????????Type?typeHeatPoints?=?heatPoints[0].GetType（）;
????????????var?properties?=?typeHeatPoints.GetProperties（）;
????????????var?propertiesCount?=?properties.Length;
????????????//構造外來參數字段集合
????????????List?outFieldNames?=?new?List（）;
????????????foreach?（PropertyInfo?propertyInfo?in?properties）
????????????{
????????????????outFieldNames.Add（propertyInfo.Name）;
????????????}

????????????//字段判斷
????????????if?（propertiesCount?<=?0）
????????????{
????????????????MessageBox.Show（“您的TDOA數據中沒有任何字段，請添加字段“）;
????????????????return?false;
????????????}
????????????else
????????????{
????????????????foreach?（string?defaultPropertyName?in?defaultPropertyNames）
????????????????{
????????????????????if?（!outFieldNames.Contains（defaultPropertyName））
????????????????????{
????????????????????????MessageBox.Show（“您的TDOA數據中不包含“?+?defaultPropertyName?+?“字段，請添加該字段“）;
????????????????????????return?false;
????????????????????}
????????????????}
????????????}
????????????//雙游標模式下的被動索引
????????????int?index?=?0;
????????????//遍歷數據行。
????????????for?（int?i?=?0;?i?????????????{
????????????????//默認字段游標索引
????????????????string?currentPropert

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????18800??2016-12-06?09:15??heatlayer\SharpMapHeatlayerHelper.cs
?????文件?????????310??2016-12-06?09:23??heatlayer\說明.txt
?????目錄???????????0??2016-12-06?09:15??heatlayer\