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DevExpress使用WaitDialogForm等待加载窗体
在DevExpress中,当我们查询sql语句或处理大量的数据时,为了防止界面假死状态,加一个提示框比较人性化。1.建立一个窗口2.引用以下DevExpress.Data.v18.2.dll,DevExpress.Utils.v18.2.dll3.代码using DevExpress.Utils;using System;using System.Collections.Generic;using
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在DevExpress中,当我们查询sql语句或处理大量的数据时,为了防止界面假死状态,加一个提示框比较人性化。
1.建立一个窗口
2.引用以下DevExpress.Data.v18.2.dll,DevExpress.Utils.v18.2.dll
3.代码
using DevExpress.Utils;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp4
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
WaitDialogForm WaitBeforeLogin = null; //实例化
new Thread((ThreadStart)delegate
{
WaitBeforeLogin = new WaitDialogForm("请稍候...", "正在查询");
int start_x = (int)(this.Location.X + (this.Width - WaitBeforeLogin.Width) / 2);
int start_y = (int)(this.Location.Y + (this.Height - WaitBeforeLogin.Height) / 2);
WaitBeforeLogin.Location = new System.Drawing.Point(start_x, start_y); //让等待窗体居中
Application.Run(WaitBeforeLogin);
}).Start();
A(); //这里写需要执行耗时的方法
WaitBeforeLogin.Invoke((EventHandler)delegate { WaitBeforeLogin.Close(); });
}
public void A()
{
for (int i = 0; i < 5; i++)
{
Thread.Sleep(1000);
}
}
}
}
4.最终效果
5.拓展功能如图
5.1.代码
using DevExpress.Utils;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp4
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
//WaitDialogForm WaitBeforeLogin = null; //实例化
//new Thread((ThreadStart)delegate
//{
// WaitBeforeLogin = new WaitDialogForm("请稍候...", "正在查询");
// int start_x = (int)(this.Location.X + (this.Width - WaitBeforeLogin.Width) / 2);
// int start_y = (int)(this.Location.Y + (this.Height - WaitBeforeLogin.Height) / 2);
// WaitBeforeLogin.Location = new System.Drawing.Point(start_x, start_y); //让等待窗体居中
// Application.Run(WaitBeforeLogin);
//}).Start();
//A(); //这里写需要执行耗时的方法
//WaitBeforeLogin.Invoke((EventHandler)delegate { WaitBeforeLogin.Close(); });
WaitDialogForm sdf = new WaitDialogForm("请稍候...", "正在查询");
int start_x = (int)(this.Location.X + (this.Width - sdf.Width) / 2);
int start_y = (int)(this.Location.Y + (this.Height - sdf.Height) / 2);
sdf.Location = new System.Drawing.Point(start_x, start_y); //让等待窗体居中
int i = 10;
for (int j = 1; j < i; j++)
{
Thread.Sleep(1000);
sdf.SetCaption("执行进度(" + j.ToString() + "/" + i.ToString() + ")");
}
sdf.Close();
}
public void A()
{
for (int i = 0; i < 5; i++)
{
Thread.Sleep(1000);
}
}
}
}
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