C # winForm: Wait for the implementation of the form,

C # winForm: Wait for the implementation of the form,

A waiting form is required for a project recently. The SplashScreen control can be used under DevExpress, And the ProgressIndicator control can be used. However, if Dev is not used for development, we need to customize a waiting form.

 

First, put it up:

The implementation function is relatively simple, that is, when the program processes some time-consuming code, the Loading form is displayed to the user and executed in the background.

 

This program refers to a program named "". When I was in the group, I thanked him for his enthusiastic help.

Now I have posted my code, which uses the concept of delegation. If you don't understand it, you can use Baidu. Here are several links:

Http://blog.csdn.net/ggz631047367/article/details/44646233

Http://www.runoob.com/csharp/csharp-delegate.html

Http://blog.csdn.net/sjj2011/article/details/7835200

Http://blog.csdn.net/testcs_dn/article/details/37671513

The LoadingControl. cs code is as follows:

1 using System; 2 using System. collections. generic; 3 using System. componentModel; 4 using System. data; 5 using System. drawing; 6 using System. linq; 7 using System. text; 8 using System. windows. forms; 9 using System. threading; 10 11 namespace ControlToolsLibrary 12 {13 public partial class LoadingControl: Form 14 {15 16 public delegate void mydelegate (); 17 public mydelegate eventMethod; 18 priva Te static LoadingControl pLoading = new LoadingControl (); 19 delegate void SetTextCallback (string title, string caption, string description); 20 delegate void CloseFormCallback (); 21 public LoadingControl () 22 {23 InitializeComponent (); 24 initLoadintForm (); 25 Thread t = new Thread (new ThreadStart (delegateEventMethod); 26 t. isBackground = true; 27 t. start (); 28} 29 30 private void LoadingControl _ FormClosing (object sender, FormClosingEventArgs e) 31 {32 if (! This. isDisposed) 33 {34 this. dispose (true); 35} 36} 37 38 private void initLoadintForm () {39 this. controlBox = false; // The close button is not displayed. 40 this. startPosition = FormStartPosition. centerParent; 41} 42 43 private void delegateEventMethod () 44 {45 eventMethod (); 46} 47 48 public static LoadingControl getLoading () 49 {50 if (pLoading. isDisposed) 51 {52 pLoading = new LoadingControl (); 53 return pLoa Ding; 54} 55 else 56 {57 return pLoading; 58} 59} 60 61 // This method demonstrates how to call controls on Windows Forms in thread-safe mode. 62 // <summary> 63 // set the title of the Loading form, tag caption and description 64 // </summary> 65 // <param name = "title"> the title of the window [when it is null, take the default value] </param> 66 // <param name = "caption"> label (for example, please wait) [when it is null, take the default value] </param> 67 // <param name = "description"> description (for example, loading resources ...) [if it is null, take the default value] </param> 68 public void SetCaptionAndDescription (string title, string caption, string description) 69 {70 if (this. invokeRequired & Lo AdingControl. lbl_caption.InvokeRequired & LoadingControl. lbl_description.InvokeRequired) 71 {72 SetTextCallback d = new SetTextCallback (SetCaptionAndDescription); 73 this. invoke (d, new object [] {title, caption, description}); 74} 75 else 76 {77 if (! Title. Equals ("") {78 this. Text = title; 79} 80 if (! Caption. Equals ("") 81 {82 LoadingControl. lbl_caption.Text = caption; 83} 84 if (! Description. equals ("") {85 LoadingControl. lbl_description.Text = description; 86} 87} 88} 89 90 public void CloseLoadingForm () 91 {92 if (this. invokeRequired) 93 {94 CloseFormCallback d = new CloseFormCallback (CloseLoadingForm); 95 this. invoke (d, new object [] {}); 96} 97 else 98 {99 if (! This. isDisposed) 100 {101 this. dispose (true); 102} 103} 104} 105 106 public void SetExecuteMethod (mydelegate method) 107 {108 this. eventMethod + = method; 109} 110 111 112} 113}

View Code

The method to call Form is as follows: