与背景工作者的进展酒吧Winforms的 [英] Progress Bar With Background Worker In Winforms
问题描述
Hello Guyzz，
Hello Guyzz,
我想在Windows窗体应用程序中使用进度条。实际上我正在将视频上传到Twitter帐户，我想显示进度条以及上传。
I want to use Progress Bar in my Windows Form application. Actually I am uploading video to twitter account, and i wanted to show progress bar along with that upload.
先谢谢。
推荐答案
您好，
对于您的问题，如果您有关于BackgroundWorker控件的问题。接下来，我将向您展示如何使用Background Worker。一个简单的演示供您参考。
For your question, If you have problem about BackgroundWorker control. Next I will show you how to use Background Worker. A simple demo for your reference.
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
BackgroundWorker bgworker;
private void Form1_Load(object sender, EventArgs e)
{
bgworker = new BackgroundWorker();
bgworker.DoWork += backgroundWorker_DoWork; ;
bgworker.RunWorkerCompleted += backgroundWorker_Completed;
bgworker.ProgressChanged += Bgworker_ProgressChanged;
bgworker.WorkerReportsProgress = true;
bgworker.WorkerSupportsCancellation = true;
}
private void Bgworker_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
progressBar1.Value = e.ProgressPercentage;
}
private void backgroundWorker_Completed(object sender, RunWorkerCompletedEventArgs e)
{
if (e.Cancelled)
label1.Text = @"The user cancelled the operation";
else
label1.Text = @"operation done";
}
private void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
// TODO：上传视频代码
//TODO : Upload video code
for（int i = 0; i< = 100; i ++）
{
if（bgworker.CancellationPending）
{
e.Cancel =真正;
返回;
}
Thread.Sleep（100）;
bgworker.ReportProgress（i）;
}
}
private void btn_Start_Click（object sender，EventArgs e）
{
if（！bgworker.IsBusy）
{
bgworker.RunWorkerAsync（）;
btn_Start.Enabled = false;
}
}
private void Stop_Click（对象发送者，EventArgs e）
{
bgworker.CancelAsync（）;
}
///////////////////////////////////// //////////////////////////////////////////// $ b $ // // ////////////////////////////////////////////////// /////////////////////////////
///< summary>
/// Designer支持的必需方法 - 不要使用代码编辑器修改
///此方法的内容。
///< / summary>
private void InitializeComponent（）
{
this.btn_Start = new System.Windows.Forms.Button（）;
this.Stop = new System.Windows.Forms.Button（）;
this.progressBar1 = new System.Windows.Forms.ProgressBar（）;
this.label1 = new System.Windows.Forms.Label（）;
this.SuspendLayout（）;
//
// btn_Start
//
this.btn_Start.Location = new System.Drawing.Point（12,25）;
this.btn_Start.Name =" btn_Start" ;;
this.btn_Start.Size = new System.Drawing.Size（75,23）;
this.btn_Start.TabIndex = 0;
this.btn_Start.Text =" Start" ;;
this.btn_Start.UseVisualStyleBackColor = true;
this.btn_Start.Click + = new System.EventHandler（this.btn_Start_Click）;
//
//停止
//
this.Stop.Location = new System.Drawing.Point（233,25）;
this.Stop.Name =" Stop" ;;
this.Stop.Size = new System.Drawing.Size（75,23）;
this.Stop.TabIndex = 0;
this.Stop.Text =" Stop" ;;
this.Stop.UseVisualStyleBackColor = true;
this.Stop.Click + = new System.EventHandler（this.Stop_Click）;
//
// progressBar1
//
this.progressBar1.Location = new System.Drawing.Point（12,83）;
this.progressBar1.Name =" progressBar1" ;;
this.progressBar1.Size = new System.Drawing.Size（296,23）;
this.progressBar1.TabIndex = 1;
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point（109,129）;
this.label1.Name =" label1" ;;
this.label1.Size = new System.Drawing.Size（0,13）;
this.label1.TabIndex = 2;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF（6F，13F）;
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size（353,353）;
this.Controls.Add（this.label1）;
this.Controls.Add（this.progressBar1）;
this.Controls.Add（this.Stop）;
this.Controls.Add（this.btn_Start）;
this.Name =" Form1" ;;
this.Text =" Form1" ;;
this.Load + = new System.EventHandler（this.Form1_Load）;
this.ResumeLayout（false）;
this.PerformLayout（）;
}
private System.Windows.Forms.Button btn_Start;
private System.Windows.Forms.Button Stop;
private System.Windows.Forms.ProgressBar progressBar1;
private System.Windows.Forms.Label label1;
}
for (int i = 0; i <= 100; i++) { if (bgworker.CancellationPending) { e.Cancel = true; return; } Thread.Sleep(100); bgworker.ReportProgress(i); } } private void btn_Start_Click(object sender, EventArgs e) { if (!bgworker.IsBusy) { bgworker.RunWorkerAsync(); btn_Start.Enabled = false; } } private void Stop_Click(object sender, EventArgs e) { bgworker.CancelAsync(); } ///////////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////////// /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { this.btn_Start = new System.Windows.Forms.Button(); this.Stop = new System.Windows.Forms.Button(); this.progressBar1 = new System.Windows.Forms.ProgressBar(); this.label1 = new System.Windows.Forms.Label(); this.SuspendLayout(); // // btn_Start // this.btn_Start.Location = new System.Drawing.Point(12, 25); this.btn_Start.Name = "btn_Start"; this.btn_Start.Size = new System.Drawing.Size(75, 23); this.btn_Start.TabIndex = 0; this.btn_Start.Text = "Start"; this.btn_Start.UseVisualStyleBackColor = true; this.btn_Start.Click += new System.EventHandler(this.btn_Start_Click); // // Stop // this.Stop.Location = new System.Drawing.Point(233, 25); this.Stop.Name = "Stop"; this.Stop.Size = new System.Drawing.Size(75, 23); this.Stop.TabIndex = 0; this.Stop.Text = "Stop"; this.Stop.UseVisualStyleBackColor = true; this.Stop.Click += new System.EventHandler(this.Stop_Click); // // progressBar1 // this.progressBar1.Location = new System.Drawing.Point(12, 83); this.progressBar1.Name = "progressBar1"; this.progressBar1.Size = new System.Drawing.Size(296, 23); this.progressBar1.TabIndex = 1; // // label1 // this.label1.AutoSize = true; this.label1.Location = new System.Drawing.Point(109, 129); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(0, 13); this.label1.TabIndex = 2; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(353, 353); this.Controls.Add(this.label1); this.Controls.Add(this.progressBar1); this.Controls.Add(this.Stop); this.Controls.Add(this.btn_Start); this.Name = "Form1"; this.Text = "Form1"; this.Load += new System.EventHandler(this.Form1_Load); this.ResumeLayout(false); this.PerformLayout(); } private System.Windows.Forms.Button btn_Start; private System.Windows.Forms.Button Stop; private System.Windows.Forms.ProgressBar progressBar1; private System.Windows.Forms.Label label1; }
希望它对您有所帮助。
最好的问候，
Bob
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