图像加载问题 [英] Image loading problem

问题描述

我写了一个程序，显示我的图像及其数据（日期，相机型号，ISO，......）。如果有GPS标签，它还会显示'是地图，照片拍摄地点。



问题：



图片显示'所有数据加载后都已启动，包括地图。



但我想尽快得到图片可能，数据可以显示出来了。

我试图用backgroundWorker解决问题，但它没有用。



以下是加载图片的代码：

 pictureBox1.ImageLocation = photosPath +   \\ + listView1.Items [CurPic-  1 ]。文字; 
  this  .Refresh（）;  //  我还尝试刷新表格，图片框，......  
 pictureBox1。刷新（）; 
 Application.DoEvents（）; 
 lblName.Text = listView1.Items [CurPic  -   1 ]。文字;  //  当前图片的名称 
 lblGPS.Text =   /;  //  如果没有GPS标签 - 写/  
 loadData.RunWorkerAsync（） ; 
 

后台工作人员调用两种方法：

  private   void  loadData_DoWork（object sender，DoWorkEventArgs e）
 {
 show_info（pictureBox1.ImageLocation）;  //  加载数据 
 showlocation（getlocation（pictureBox1.ImageLocation））;  //  获取位置并显示地图 
} 

此代码有效，与没有后台工作者相同。有没有其他方法可以解决这个问题。请帮忙。

解决方案

试试这个（警告：会阻止用户界面！）：

 pictureBox1.WaitOnLoad = 真; 
 pictureBox1.Load（  ...）; 

/拉维

I wrote a program, that shows my images and their data (date, camera model, ISO, ...). If there is a GPS tag it also show''s the map, where the picture was taken.

The problem:

The picture show''s up after all data has been loaded, including the map.

But I want to get the picture as soon as possible and the data can show''s up later.
I tried to solve the problem with backgroundWorker, but it doesn'' work.

Here is the code for loading the picture:

pictureBox1.ImageLocation = photosPath + "\\" + listView1.Items[CurPic-1].Text;
this.Refresh();        //I also tried to refresh the form, picture box, ...
pictureBox1.Refresh();
Application.DoEvents();
lblName.Text = listView1.Items[CurPic - 1].Text; //the name of the current pic
lblGPS.Text = "/";          //In case, there is no GPS tag - write /
loadData.RunWorkerAsync();

The background worker calls two methods:

private void loadData_DoWork(object sender, DoWorkEventArgs e)
        {
            show_info(pictureBox1.ImageLocation);   //loading data
            showlocation(getlocation(pictureBox1.ImageLocation));   //getting location and showing map
        }

This code works, just the same as without background worker. Is there any other way to solve this. Please help.

解决方案

Try this (warning: will block the UI!):

pictureBox1.WaitOnLoad = true;
pictureBox1.Load ("...");

/ravi

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