如何使用c sharp Coding将标记列表放在GMap控制上 [英] How can i place List of Markers on GMap Control using c sharp Coding

问题描述

嗨朋友们，





我用c＃编码创建了windows应用程序。在我的应用程序中，我正在使用GMap-Control，在Gmap-Control中，我在地图上绘制了基于纬度和经度的大量标记。此控件适用于有限的数据。如果我选择大数据（超过2000条记录），它的速度太慢，并且系统暂停用于绘制标记。我正在使用FOR LOOP在地图上绘制每个标记（基于数据表中每行的纬度和经度）。是否有任何方法可以绘制除FOR LOOP之外的标记，这样可以尽快在Gmap-Control上绘制标记。



感谢提前

Hi Friends,


I have created windows application using c# coding. In my application i am using GMap-Control, in Gmap-Control i am plotting lot of Markers based on Latitude and Longitude on map.This control is working fine for limited data. If i go for Large data (More then 2000 records) its getting too slow and system is hanging for plotting Markers. I am using FOR LOOP to plot each marker on the map(Based on Latitude and Longitude for each rows in a data-table). Is there any way to plot markers other than FOR LOOP which makes the plotting of markers on Gmap-Control as fast as possible.

Thank's in Advance

推荐答案

我对你的应用程序知之甚少，甚至更少关于GMap-Control，但for循环和你要使用的任何代码一样快。您应该使用循环的迭代器版本而不是递增索引;但这不会产生那么大的差别。由于正在完成的工作是在UI线程中，你不能多线程任何东西。



如果在获取每条记录时发生了处理，你可以创建预先计算的缓存记录信息数组。



创建更快显示外观的一件事是将记录分成块并重新显示添加每个'n'个记录后控制。

I don't know much about your app and even less about GMap-Control but a for loop is as fast as any code you are going to use. You should use the iterator version of the loop rather than an incrementing index; but this won't make that much difference. Since the work being done is in a UI thread, you can't multi-thread anything.

If there is processing that occurs when getting each record, you can create an array of cached record info that is pre-computed.

One thing you can do to create the appearance of faster display is to break the records into chunks and redisplay the control after adding every 'n' records.

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