Classic example of loading interface in C#
This article mainly introduces the common methods of loading interface in C#, involving the operation of forms, which is of great practical value. Friends in need can refer to it
The example of this article describes the loading interface in C# common methods. Share it with everyone for your reference. The specific method analysis is as follows:
Method 1. Using event delegation method
Object: Main form: FrmMain Loading form: FrmLoading
Idea:
Display the window before the main form is loaded Body FrmLoading, when the main form is loaded (when it is displayed for the first time), close FrmLoading
The C# code is as follows:
The code is as follows:
using System;using System.Collections.Generic;using
System.ComponentModel;using System.Data;using System.Drawing;using
System.Linq;using
System.Text;using
System.Windows.Forms;using
System.Threading;
namespace CDemoTest{
public partial class FrmMain : Form
{
private FrmLoading loadForm;
public FrmMain()
{
//创建加载窗体
loadForm = new FrmLoading();
//指定窗体加载完毕时的事件
this.Shown += FrmLoading_Close;
loadForm.Show();
//主窗体初始化方法
InitializeComponent();
}
//声明关闭加载窗体方法
private void FrmLoading_Close(object sender, EventArgs e)
{
loadForm.Close();
}
private void FrmMain_Load(object sender, EventArgs e)
{
Thread.Sleep(3000);
}
}
}Method 2 .
① In the Main method, display the startup screen first, and be careful to use Show instead of ShowDialog.
② Then follow the normal way, Application.Run(mainForm);
③ In the constructor of mainForm, start the loading thread.
④ Set a flag in mainForm. If the loading is completed, the flag is set to a certain value.
⑤ For the form used as the startup screen, pay attention to detecting the flag in mainForm. If the main form is loaded, it will close itself.
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