backgroundWorker 等待窗口的实现(loading窗口)

 

用模对话框显示窗口，后台执行文件的列出。。。方法如下

 

     
     
   
   

      
      
      
    
            
      
      
    
    public
      
      
    
     
      
      
    
    void
      
      
    
     chang()
        {
            
      
      
    
    try
      
      
    
    
            {
                Form loadingform 
      
      
    
    =
      
      
    
     
      
      
    
    new
      
      
    
     loading();
                loadingform.StartPosition 
      
      
    
    =
      
      
    
     FormStartPosition.CenterParent;
                loadingform.ShowDialog();
            }
            
      
      
    
    catch
      
      
    
    
            {
 
            }
        }

        
      
      
    
    private
      
      
    
     
      
      
    
    void
      
      
    
     ultraButton1_Click(
      
      
    
    object
      
      
    
     sender, EventArgs e)
        {
      
      
    
                
           backgroundWorker1.RunWorkerAsync(); 
      
      
    
    //
      
      
    
    开始后台执行
      
      
    
    

      
      
    
    
            chang();                            
      
      
    
    //
      
      
    
    调用等待窗口
      
      
    
    

      
      
    
    
            backgroundWorker1.CancelAsync();   
      
      
    
    //
      
      
    
    停止后台执行
      
      
    
    

      
      
    
    
            ultraButton1.Enabled 
      
      
    
    =
      
      
    
     
      
      
    
    true
      
      
    
    ;
            
        }

      
      
    
    

        
      
      
    
    private
      
      
    
     
      
      
    
    void
      
      
    
     backgroundWorker1_DoWork(
      
      
    
    object
      
      
    
     sender, DoWorkEventArgs e)
        {
            FindFile(
      
      
    
    @"
      
      
    
    C:\Users\王彬\Documents\
      
      
    
    "
      
      
    
    );   
      
      
    
    //
      
      
    
    后台执行列出此目录下所有文件
      
      
    
    

      
      
    
            }

        
      
      
    
    private
      
      
    
     
      
      
    
    void
      
      
    
     backgroundWorker1_ProgressChanged(
      
      
    
    object
      
      
    
     sender, ProgressChangedEventArgs e)
        {
            
        }

        
      
      
    
    private
      
      
    
     
      
      
    
    void
      
      
    
     backgroundWorker1_RunWorkerCompleted(
      
      
    
    object
      
      
    
     sender, RunWorkerCompletedEventArgs e)
        {
            Application.OpenForms[
      
      
    
    "
      
      
    
    loadingform
      
      
    
    "
      
      
    
    ].Close(); 
      
      
    
    //
      
      
    
    关闭等待窗口
      
      
    
    

      
      
    
            }