C# Winfrom的数据加载等待界面问题 急。。

[woxihuanbiancheng313]

我要在winfrom界面中实现一个数据加载等待界面。我使用的方法是：

ThreadStart threadDelegate = new ThreadStart(Waiting);
if(newThread != null && newThread.ThreadState != ThreadState.Aborted)
{
newThread.Abort();
}
newThread = new Thread(threadDelegate);
newThread.Start();

//操作事件
doLoading（）;

if (newThread != null && newThread.IsAlive)
{

newThread.Abort(); //销毁线程，自动回收托管资源
}

private void Waiting()
{

Frm_Wait frm_wait1 = new Frm_Wait(); //申明一个等待界面
frm_wait1.Location = new Point(525, 277);
frm_wait1.ShowDialog(); //线程等待

}


但是每次加载了时间的时候，都会出现frm_wait1这个界面没有完全销毁，或者frm_wait1这个界面的图片变成红色的矩形框，有时候则会报GDI一般性错误，如果数据事件doLoading执行的时间太短了，则会出现系统退出。
请求各位大哥大姐帮帮忙，怎么界面这个数据加载等待界面的问题。。。

[wuyq11]

progressbar实现进度条
http://topic.csdn.net/u/20091203/11/a1371284-07c3-4ed2-bb5e-4f522c57189f.html

[woxihuanbiancheng313]

8楼，怎么进行线程与主线程的通信啊？

[AdaEniac]

给你参考，你可以参考我这个来改写.这样你就更熟悉Thread是怎么操作的了
一个Process 类

using System;
using System.Collections.Generic;
using System.Text;
using CommonData.Forms;
using System.Threading;
using System.Windows.Forms;

namespace CommonData
{
    public class AdaProcess
    {
        private delegate void ProgressFormInvoke(string pcProcessName, string pcProcessInfo, int piProgressValue);
        private ProgressDialog _ProgressForm = null;
        private Thread _Thread = null;
        private System.Windows.Forms.Timer _ProcessTimer;

        public AdaProcess()
        { 
            _ProcessTimer = new System.Windows.Forms.Timer();
            _ProcessTimer.Enabled = false;
            _ProcessTimer.Interval = 200;
            _ProcessTimer.Tick += new EventHandler(ProcessTimer_Tick);
        }
        public void Start(string pcProcessName, ThreadStart poThreadStart, bool plIsDialog)
        {
            string _ProcessName = pcProcessName;
            if (_Thread != null)
            {
                return;
            }

            this._ProcessTimer.Enabled = true;
            this._ProcessTimer.Start();
            this._Thread = new Thread(poThreadStart);
            this._Thread.SetApartmentState(ApartmentState.STA);
            this._Thread.Start();

            if (_ProgressForm == null)
            {
                _ProgressForm = new ProgressDialog(this);
                _ProgressForm.Text = pcProcessName;
                _ProgressForm.ResetStepInfo(pcProcessName, "", 0);
                if (plIsDialog)
                {
                    _ProgressForm.ShowDialog();
                }
                else
                {
                    _ProgressForm.Show();
                }
            }
        }
        private void ProcessTimer_Tick(object sender, EventArgs e)
        {
            if (_Thread != null && !_Thread.IsAlive)
            {
                ResetProcessInfo("", "", 100);
                _ProcessTimer.Stop();
                _ProcessTimer.Enabled = false;
                this.Stop();
            }
        }
        public void ResetProcessInfo(string pcProcessName, string pcProcessInfo, int piProgressValue)
        {
            if (_ProgressForm != null)
            {
                ProgressFormInvoke loInvoke = new ProgressFormInvoke(_ProgressForm.ResetStepInfo);
                _ProgressForm.Invoke(loInvoke, new object[] { pcProcessName, pcProcessInfo, piProgressValue });
            }
        }
        public void Stop()
        {
            if (_Thread == null)
            {
                return;
            }
            try
            {
                _Thread.Abort();
                _ProgressForm.Invoke(new MethodInvoker(_ProgressForm.Close));
            }
            catch (Exception)
            {
            }
            finally
            {
                _ProgressForm = null;
                _Thread = null;
            }
        }
        public override string ToString()
        {
            return "AdaProcess";
        }
    }
}

[AdaEniac]

然后是一个显示进度条的Form
ProgressDialog.Designer.cs

namespace CommonData.Forms
{
    partial class ProgressDialog
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.progressBar = new System.Windows.Forms.ProgressBar();
            this.labProcessName = new System.Windows.Forms.Label();
            this.labProcessPlan = new System.Windows.Forms.Label();
            this.btnCancel = new System.Windows.Forms.Button();
            this.labStep = new System.Windows.Forms.Label();
            this.SuspendLayout();
            // 
            // progressBar
            // 
            this.progressBar.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
                        | System.Windows.Forms.AnchorStyles.Right)));
            this.progressBar.ForeColor = System.Drawing.Color.Lime;
            this.progressBar.Location = new System.Drawing.Point(5, 60);
            this.progressBar.Name = "progressBar";
            this.progressBar.Size = new System.Drawing.Size(459, 16);
            this.progressBar.TabIndex = 0;
            this.progressBar.Value = 100;
            // 
            // labProcessName
            // 
            this.labProcessName.Font = new System.Drawing.Font("SimSun", 10F);
            this.labProcessName.Location = new System.Drawing.Point(6, 3);
            this.labProcessName.Name = "labProcessName";
            this.labProcessName.Size = new System.Drawing.Size(480, 30);
            this.labProcessName.TabIndex = 1;
            this.labProcessName.Text = "Name";
            // 
            // labProcessPlan
            // 
            this.labProcessPlan.Font = new System.Drawing.Font("SimSun", 10F);
            this.labProcessPlan.Location = new System.Drawing.Point(6, 37);
            this.labProcessPlan.Name = "labProcessPlan";
            this.labProcessPlan.Size = new System.Drawing.Size(480, 17);
            this.labProcessPlan.TabIndex = 2;
            this.labProcessPlan.Text = "Info";
            // 
            // btnCancel
            // 
            this.btnCancel.Location = new System.Drawing.Point(407, 79);
            this.btnCancel.Name = "btnCancel";
            this.btnCancel.Size = new System.Drawing.Size(75, 23);
            this.btnCancel.TabIndex = 4;
            this.btnCancel.Text = "Cancel";
            this.btnCancel.UseVisualStyleBackColor = true;
            this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
            // 
            // labStep
            // 
            this.labStep.Location = new System.Drawing.Point(466, 61);
            this.labStep.Name = "labStep";
            this.labStep.Size = new System.Drawing.Size(25, 14);
            this.labStep.TabIndex = 5;
            this.labStep.Text = "00%";
            this.labStep.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
            // 
            // ProgressDialog
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(494, 108);
            this.ControlBox = false;
            this.Controls.Add(this.labStep);
            this.Controls.Add(this.btnCancel);
            this.Controls.Add(this.labProcessPlan);
            this.Controls.Add(this.labProcessName);
            this.Controls.Add(this.progressBar);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
            this.MaximizeBox = false;
            this.MaximumSize = new System.Drawing.Size(500, 140);
            this.MinimizeBox = false;
            this.MinimumSize = new System.Drawing.Size(500, 140);
            this.Name = "ProgressDialog";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "Process Status";
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.ProgressBar progressBar;
        private System.Windows.Forms.Label labProcessName;
        private System.Windows.Forms.Label labProcessPlan;
        private System.Windows.Forms.Button btnCancel;
        private System.Windows.Forms.Label labStep;
    }
}

[AdaEniac]

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace CommonData.Forms
{
    public partial class ProgressDialog : Form
    {
        private AdaProcess _Process;

        public ProgressDialog(AdaProcess poProcess)
        {
            InitializeComponent();

            this._Process = poProcess;
        }
        public void ResetStepInfo(string pcProcessName, string pcProcessInfo, int piProgressValue)
        {
            this.labProcessName.Text = pcProcessName;
            this.labProcessPlan.Text = pcProcessInfo;
            this.progressBar.Value = piProgressValue;
            this.labStep.Text = piProgressValue + "%";
            this.Text = pcProcessName;
        }
        private void btnCancel_Click(object sender, EventArgs e)
        {
            if (_Process != null)
            {
                if (AppMsg.ShowQuestionOkCancel("You will stop current thread! Are you sure?"))
                {
                    _Process.Stop();
                }
            }
        }
    }
}

[LovingAlison]

你用 backgroundWorker 很简单的就能实现了

例子

[LovingAlison]

如果需要的话 联系我 我写个小程序给你

[宇峰科技]

不难，要花点时间了

[捷哥1999]

看看这个！
你需要先注册codeproject网站的用户，用email地址很快。

源代码和实现说明

下图实现的是拷贝大文件时等待的画面，你可以自己修改后，点击拷贝，就是你点击加载数据源的情况，然后显示进度条，或者一个动画的窗体都可以！

[zhubo006]

[风之影子]

http://topic.csdn.net/u/20090804/15/1fdb9202-22bf-47b8-8650-3f9596d82ff3.html

[xy325432]

顶4楼

[-深白色-]

楼主，你在doLoading之后只是关掉了线程而已，但是那个form你并没有close，所以可能会有问题，你要主动的去关闭等待的form，而不是等待销毁。 线程关闭并不代表form就被关闭了，这个要区别开了。
另外，你这样的写法是需要线程间通信的，就是说，你新开启的线程要知道doLoading之后再结束form

[woxihuanbiancheng313]

感谢大家，问题也基本解决。根据8楼 的思想，在doing 后，调用支线程来进行关闭页面，然后再关闭进程。就不会出现问题了。我采用了委托调用等待页面的一个方法，这个方法是关闭页面。
//调用支线程关闭等待页面
if (frm_wait != null)
{
setwait loInvoke = new setwait(frm_wait.SetClose);
frm_wait.Invoke(loInvoke, new object[] {true});
}