winform中通过FileStream实现将文件上传

winform中通过FileStream实现将文件上传

本实例实现功能：通过OpenFileDialog选择待上传的文件，并将所选文件的完整路径绑定到TreeView控间中显示，然后通过FolderBrowserDialog选择上传的文件路径，最后通过FileStream的方法将文件以二进制流的形式写入到所选路径的对应文件中。
其中：
trvFile为TreeView控间，显示待上传的文件；lablContent为Lable控间，显示待上传文件的信息和上传结果；btnSearch为Button控间，执行选择文件的功能；btnUpload为Button控间，执行文件上传的功能。
详细代码如下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace WindowsApplication1
{
public partial class FileUpLoad : Form
{
public FileUpLoad()
{
InitializeComponent();

this.lablContent.Text = "附件名称：";
}

private void btnSearch_Click(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();

ofd.ShowDialog();

//得到上传文件的完整名
string loadFullName = ofd.FileName.ToString();

//上传文件的文件名
string loadName = loadFullName.Substring(loadFullName.LastIndexOf("//") + 1);

//上传文件的类型
string loadType = loadFullName.Substring(loadFullName.LastIndexOf(".") + 1);

this.lablContent.Text += "/n"+loadFullName;

AddFileToTreeView(loadFullName, loadName);
}
选择文件完成后的，用户界面如下图所示：



/// <summary>
/// 上传文件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void btnUpload_Click(object sender, EventArgs e)
{
TreeNodeCollection tnNodeColl = trvFile.Nodes;

int nodeCount = tnNodeColl.Count;

int successCount = 0;

if (nodeCount > 0)
{
//
//选择保存文件的路径
//
folderBrowserDialog1.ShowDialog();

string loadPath = folderBrowserDialog1.SelectedPath;

string nodeText = string.Empty;

string nodeTipText = string.Empty;

foreach (TreeNode node in tnNodeColl)
{
if (node.Checked)
{
nodeText = node.Text.ToString();

nodeTipText = node.ToolTipText;

string loadFile = loadPath + "//"+nodeTipText;

bool isExists = JudgeFileExists(loadFile, nodeTipText);

if (isExists)
{
byte[] btFile = FileToBinary(nodeText);

if (BinaryToFile(loadFile, btFile))
{
node.Checked = false;

successCount++;

continue;
}
else
{
break;
}
}
else
{
continue;
}
}
else
{
continue;
}
}

string strCue = "成功上传" + successCount.ToString() + "个文件。/n";

int failCount = nodeCount - successCount;

strCue += "上传失败" + failCount.ToString() + "个文件。/n";

this.lablContent.Text = strCue;
}
else
{
MessageBox.Show("请选择要上传的文件！");
}
}
上传地址选择界面，如下图所示：



上传成功界面，如下图所示：



/// <summary>
/// 将文件转换为二进制流进行读取
/// </summary>
/// <param name="fileName">文件完整名</param>
/// <returns>二进制流</returns>
private byte[] FileToBinary(string fileName)
{
try
{
FileStream fsRead = new FileStream(fileName, FileMode.Open, FileAccess.Read);

if (fsRead.CanRead)
{
int fsSize = Convert.ToInt32(fsRead.Length);

byte[] btRead = new byte[fsSize];

fsRead.Read(btRead, 0, fsSize);

return btRead;
}
else
{
MessageBox.Show("文件读取错误！");
return null;
}
}
catch (Exception ce)
{
MessageBox.Show(ce.Message);

return null;
}
}

/// <summary>
/// 将二进制流转换为对应的文件进行存储
/// </summary>
/// <param name="filePath">接收的文件</param>
/// <param name="btBinary">二进制流</param>
/// <returns>转换结果</returns>
private bool BinaryToFile(string fileName, byte[] btBinary)
{
bool result = false;

try
{
FileStream fsWrite = new FileStream(fileName, FileMode.Create, FileAccess.Write);

if (fsWrite.CanWrite)
{
fsWrite.Write(btBinary, 0, btBinary.Length);

MessageBox.Show("文件写入成功！");

result = true;
}
else
{
MessageBox.Show("文件些入错误！");
result = false;
}
}
catch (Exception ce)
{
MessageBox.Show(ce.Message);
result = false;
}

return result;
}

/// <summary>
/// 判断文件是否存在
/// </summary>
/// <param name="fileName">文件完整的路径名</param>
/// <param name="nodeTipText">文件名</param>
/// <returns>判断结果</returns>
private bool JudgeFileExists(string fileName, string nodeTipText)
{

if (File.Exists(fileName))
{
StringBuilder sbError = new StringBuilder();
sbError.Append(nodeTipText + "已存在于：/n");

sbError.Append(fileName.Substring(0, fileName.LastIndexOf("//")) + "/n");

sbError.Append("中，是否覆盖原文件？");

string strSearch = MessageBox.Show(sbError.ToString(), "提示", MessageBoxButtons.YesNo).ToString();

if (strSearch == "Yes")
{
return true;
}
else
{
return false;
}
}
else
{
return true;
}

}

/// <summary>
/// 为树菜单赋值，即待上传文件的完整名
/// </summary>
/// <param name="fullName"></param>
/// <param name="simpleName"></param>
private void AddFileToTreeView(string fullName, string simpleName)
{
TreeNodeCollection nodeCollection = trvFile.Nodes;

TreeNode node = new TreeNode();

node.Text = fullName;

node.ToolTipText = simpleName;

node.Checked = true;

nodeCollection.Add(node);

if (nodeCollection.Count == 1)
{
Button btnUpload = new Button();

btnUpload.Text = "上传";

btnUpload.Click += new EventHandler(btnUpload_Click);

panel1.Controls.Add(btnUpload);
}
}

}
}