form1.cs

CS导航Logo ,在Logo上显示Loading

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.IO;
using System.Net;
using System.Security;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Windows.Forms;
using System.Data;
using System.Threading;
using Microsoft.Web.Services2;
using Microsoft.Web.Services2.Dime;

namespace BufferedUploadWin
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button btnBrowse;
		private System.Windows.Forms.Button btnUpload;
		private System.Windows.Forms.OpenFileDialog openFileDialog1;
		private System.Windows.Forms.TextBox textBox1;
		private System.ComponentModel.IContainer components;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Button btnCancel;
		private System.Windows.Forms.DomainUpDown dudChunkSize;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.ToolTip toolTip1;	// the the cursor icon embedded in the status bar
		private BufferedUpload ws;
		private DateTime startTime;
		private BufferedUploadWin.FormBar formBar;
		private int retryCount = 20;	// number of times to retry a download. gets decremented each time.
		
		public Form1()
		{
			InitializeComponent();
			
		}
		
		private void btnBrowse_Click(object sender, System.EventArgs e)
		{
			this.openFileDialog1.ShowDialog();
			this.textBox1.Text = this.openFileDialog1.FileName;
			this.btnUpload.Enabled = (this.textBox1.Text != "");
		}
		
		private void btnUpload_Click(object sender, System.EventArgs e)
		{
			if(this.textBox1.Text == "")
			{
				this.formBar.UpdateStatusBarMessage("No file selected");
				return;
			}

			this.formBar.UpdateStatusBarMessage("Initialising file upload...");
			this.btnCancel.Enabled = true;
			this.btnUpload.Enabled = false;

			this.formBar.progressBar.Value = 0;
			this.formBar.progressBar.Maximum = 100;
			this.formBar.progressBar.Visible = true;
			this.Cursor = Cursors.WaitCursor;

			ws = new BufferedUpload();
			try
			{
				ws.ChunkSize = Int32.Parse(this.dudChunkSize.Text)*1000;	// kilobytes
			}
			catch
			{
				MessageBox.Show("Error: Enter numbers only in the chunk size box");
				return;
			}
			ws.ProgressChanged += new ProgressChangedEventHandler(Upload_ProgressChanged);
			ws.StateChanged += new EventHandler(Upload_StateChanged);
			
			this.startTime = DateTime.Now;	// begin a timer
			ws.BeginUploadChunks(this.textBox1.Text);
		}	
		
		private void Upload_ProgressChanged(object sender, ProgressChangedEventArgs e) 
		{
			// the progress bar is set to max 100, not the number of total bytes, because this can be bigger than the max size of an int
			this.formBar.progressBar.Value = e.PercentComplete;
			this.formBar.UpdateStatusBarMessage(BufferedUpload.GetFileSize(ws.SentBytes) + " / " + BufferedUpload.GetFileSize(ws.Filesize));
		}
		
		private void Upload_StateChanged(object sender, EventArgs e) 
		{
			switch(ws.State)
			{
				case UploadState.Completed:
					TimeSpan duration = DateTime.Now - this.startTime;
					this.ResetUi();
					this.formBar.UpdateStatusBarMessage("Upload completed in " + string.Format("{0:d} minutes, {1:d} seconds", duration.Minutes,duration.Seconds));
					break;

				case UploadState.Failed:
					if(this.retryCount > 0)
					{
						Retry retryForm = new Retry();
						retryForm.Init("An error occured during the upload:\n" + this.ws.LastError.Message, 5, this.retryCount, new Retry.InitDelegate(this.ws.Retry));
						DialogResult result = retryForm.ShowDialog();
						if(result == DialogResult.Cancel)
							this.btnCancel.PerformClick();
						else	// user said Yes
							retryCount--;
					}
					else
					{
						this.ResetUi();
						this.formBar.UpdateStatusBarMessage("Failed");
						MessageBox.Show("Error: " + (sender as BufferedUpload).LastError.Message, "Upload failed");
					}
					break;
			}
		}

		private void btnCancel_Click(object sender, System.EventArgs e)
		{
			try
			{
				if(this.ws != null && this.ws.State == UploadState.Running || this.ws.State == UploadState.Waiting)
				{
					ws.ProgressChanged -= new ProgressChangedEventHandler(Upload_ProgressChanged);
					ws.StateChanged -= new EventHandler(Upload_StateChanged);
			
					this.ws.Cancel();
				}
				this.formBar.UpdateStatusBarMessage("Cancelled.");
			}
			catch(Exception ex)
			{
				this.formBar.UpdateStatusBarMessage("Cancelled, with errors: " + ex.Message);
			}
			this.ResetUi();			
		}

		#region general user interface stuff
		

		delegate void ResetUiDel();
		private void ResetUi()
		{
			if(this.InvokeRequired)
			{
				// switch to UI thread
				ResetUiDel del = new ResetUiDel(this.ResetUi);
				BeginInvoke(del, new object[]{});
				return;
			}
			this.formBar.progressBar.Visible = false;
			this.btnUpload.Enabled = true;
			this.btnCancel.Enabled = false;			
			this.Cursor = Cursors.Default;
		}

		private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
		{
			try
			{
				// clean up the upload instance on the web server
				if(this.ws != null && this.ws.State == UploadState.Running || this.ws.State == UploadState.Waiting)
					this.ws.RemoveInstance(this.ws.InstanceId);
			}
			catch{}	// ignore
		}		

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (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.components = new System.ComponentModel.Container();
			this.btnBrowse = new System.Windows.Forms.Button();
			this.btnUpload = new System.Windows.Forms.Button();
			this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.btnCancel = new System.Windows.Forms.Button();
			this.dudChunkSize = new System.Windows.Forms.DomainUpDown();
			this.label2 = new System.Windows.Forms.Label();
			this.toolTip1 = new System.Windows.Forms.ToolTip(this.components);
			this.formBar = new BufferedUploadWin.FormBar();
			this.SuspendLayout();
			// 
			// btnBrowse
			// 
			this.btnBrowse.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
			this.btnBrowse.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.btnBrowse.Location = new System.Drawing.Point(625, 7);
			this.btnBrowse.Name = "btnBrowse";
			this.btnBrowse.TabIndex = 0;
			this.btnBrowse.Text = "Browse";
			this.btnBrowse.Click += new System.EventHandler(this.btnBrowse_Click);
			// 
			// btnUpload
			// 
			this.btnUpload.Anchor = System.Windows.Forms.AnchorStyles.None;
			this.btnUpload.Enabled = false;
			this.btnUpload.Location = new System.Drawing.Point(268, 37);
			this.btnUpload.Name = "btnUpload";
			this.btnUpload.TabIndex = 2;
			this.btnUpload.Text = "Start Upload";
			this.btnUpload.Click += new System.EventHandler(this.btnUpload_Click);
			// 
			// textBox1
			// 
			this.textBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.textBox1.Location = new System.Drawing.Point(84, 6);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(533, 20);
			this.textBox1.TabIndex = 5;
			this.textBox1.Text = "";
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(8, 7);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(77, 23);
			this.label1.TabIndex = 6;
			this.label1.Text = "File to upload:";
			// 
			// btnCancel
			// 
			this.btnCancel.Anchor = System.Windows.Forms.AnchorStyles.None;
			this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.btnCancel.Enabled = false;
			this.btnCancel.Location = new System.Drawing.Point(361, 37);
			this.btnCancel.Name = "btnCancel";
			this.btnCancel.TabIndex = 7;
			this.btnCancel.Text = "Cancel";
			this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
			// 
			// dudChunkSize
			// 
			this.dudChunkSize.Items.Add("4");
			this.dudChunkSize.Items.Add("8");
			this.dudChunkSize.Items.Add("16");
			this.dudChunkSize.Items.Add("32");
			this.dudChunkSize.Items.Add("64");
			this.dudChunkSize.Items.Add("128");
			this.dudChunkSize.Items.Add("256");
			this.dudChunkSize.Items.Add("512");
			this.dudChunkSize.Items.Add("1024");
			this.dudChunkSize.Items.Add("2048");
			this.dudChunkSize.Items.Add("4096");
			this.dudChunkSize.Location = new System.Drawing.Point(98, 41);
			this.dudChunkSize.Name = "dudChunkSize";
			this.dudChunkSize.Size = new System.Drawing.Size(58, 20);
			this.dudChunkSize.TabIndex = 9;
			this.dudChunkSize.Text = "64";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(10, 43);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(84, 23);
			this.label2.TabIndex = 10;
			this.label2.Text = "Chunk size (kb)";
			// 
			// formBar
			// 
			this.formBar.Dock = System.Windows.Forms.DockStyle.Bottom;
			this.formBar.Location = new System.Drawing.Point(0, 71);
			this.formBar.Name = "formBar";
			this.formBar.Size = new System.Drawing.Size(707, 21);
			this.formBar.TabIndex = 11;
			// 
			// Form1
			// 
			this.AcceptButton = this.btnUpload;
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(707, 92);
			this.Controls.Add(this.formBar);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.dudChunkSize);
			this.Controls.Add(this.textBox1);
			this.Controls.Add(this.btnCancel);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.btnUpload);
			this.Controls.Add(this.btnBrowse);
			this.Name = "Form1";
			this.Text = "Chunked File Upload";
			this.Closing += new System.ComponentModel.CancelEventHandler(this.Form1_Closing);
			this.Load += new System.EventHandler(this.Form1_Load);
			this.ResumeLayout(false);

		}
		#endregion

		private void Form1_Load(object sender, System.EventArgs e)
		{
		
		}

		#endregion
	}
}