C#对本地文件简单（删除/修改）操作

前段时间一日本华侨朋友，要我帮他写个对本地文件的简单操作，今天在这里和大家分享一下，如有什么地方不足，请大赐教……

（读取的是本地F盘下e文件夹中所有txt文件）运行效果图如下所示：

重命名操作运行如下图所示：

当时做的时候，觉得难的是编辑怎么弹窗体去做，本人是做web开发的，对winform不是很熟悉，有什么不对的地方可以指教一下！

项目结构图如下所示：

Basic.cs源码如下所示：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;



namespace Sony

{

public class Basic

{

/// <summary>

 /// 截取文件路径字符串

 /// </summary>

 /// <param name="str">str</param>

 /// <returns></returns>

 public static string SubStr(string str)

{

int length = str.LastIndexOf("\\");

string fileName = str.Substring(length);

string name = fileName.Substring(1, fileName.LastIndexOf(".") - 1);

return name;

}



/// <summary>

 /// 判断一个文件是否正在使用函数

 /// </summary>

 /// <param name="fileName">将要判断文件的文件名</param>

 /// <returns></returns>

 public static bool IsFileInUse(string fileName)

{

bool inUse = true;

if (System.IO.File.Exists(fileName))

{

System.IO.FileStream fs = null;

try

{

fs = new System.IO.FileStream(fileName, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.None);

inUse = false;

}

catch (System.IO.IOException)

{

return true;

}

finally

{

if (fs != null)

{

fs.Close();

}

}

return inUse;

}

else

{

return false;

}

}

}

}

FolderDialog.cs代码如下所示：

using System;

using System.Collections.Generic;

using System.Windows.Forms.Design;

using System.Text;

using System.Windows.Forms;



namespace Sony

{

public class FolderDialog : FolderNameEditor

{

FolderBrowser fDialog = new FolderBrowser();



public FolderDialog() { }



public DialogResult DisplayDialog()

{

return DisplayDialog("请选择一个文件夹");

}



public DialogResult DisplayDialog(string description)

{

fDialog.Description = description;

return fDialog.ShowDialog();

}



public string Path

{

get

{

return fDialog.DirectoryPath;

}

}



~FolderDialog()

{

fDialog.Dispose();

}

}

}

edit.cs代码如下所示：

using System;

using System.Collections.Generic;

using System.Text;

using System.Windows.Forms;



namespace Sony

{

public partial class edit : Form

{

private string path;

private string fileName;

private string type = ".txt";

public file_opear fo;

public edit()

{

InitializeComponent();

}



/// <summary>

 /// 构造函数重载

 /// </summary>

 /// <param name="filePath"></param>

 public edit(string filePath)

{

InitializeComponent();

this.txtFileName.Text = Basic.SubStr(filePath).Trim();

this.fileName = this.txtFileName.Text;

this.path = filePath.Substring(0, filePath.LastIndexOf("\\") + 1);

}



/// <summary>

 /// 确定修改文件名称

 /// </summary>

 /// <param name="sender"></param>

 /// <param name="e"></param>

 private void btnOk_Click(object sender, EventArgs e)

{

if (fileName == this.txtFileName.Text.Trim())//没有修改文件名称

 {

MessageBox.Show("新文件名和原文件名相同，不需要修改！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);

this.Close();

}

else if (this.txtFileName.Text.Trim().Length < 1)//没有输入文件名

 {

MessageBox.Show("请输入文件名称！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);

}

else

{

string old_filePath = this.path + fileName + type;

string new_filePath = this.path + this.txtFileName.Text.Trim() + type;

if (System.IO.File.Exists(new_filePath))

{

MessageBox.Show("已经存在了一个" + new_filePath + "文件", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);

}

else if (Basic.IsFileInUse(old_filePath))

{

MessageBox.Show("系统在尝试修改'正在使用'(" + old_filePath + ")文件名称时失败！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);

}

else

{

System.IO.File.Move(old_filePath, new_filePath);

MessageBox.Show("文件名称修改成功！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);

this.Close();

}

}

}



/// <summary>

 /// 取消

 /// </summary>

 /// <param name="sender"></param>

 /// <param name="e"></param>

 private void btnCancel_Click(object sender, EventArgs e)

{

this.Close();

}

}

}

file_opear.cs代码如下所示：

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;



namespace Sony

{

public partial class file_opear : Form

{

private string path = @"F:\e";

private DataTable dt;

private List<string> files;//文件名 例如：hello

 private List<string> files_path;//文件绝对路径 例如:F://aa//hello.csv

 private string type = "*.txt";

public edit et;



/// <summary>

 /// 构造函数

 /// </summary>

 public file_opear()

{

InitializeComponent();

}



/// <summary>

 /// 窗体加载

 /// </summary>

 /// <param name="sender"></param>

 /// <param name="e"></param>

 private void file_opear_Load(object sender, EventArgs e)

{

this.initDT();

this.FillData(this.dataGridView1);

}



/// <summary>

 /// 初始化DataTable

 /// </summary>

 private void initDT()

{

this.dt = new DataTable();

dt.Columns.Add("NO.", typeof(int));

dt.Columns.Add("ProgName", typeof(string));

}



/// <summary>

 /// 选择文件并加载

 /// </summary>

 /// <param name="sender"></param>

 /// <param name="e"></param>

 private void selectFolder_Click(object sender, EventArgs e)

{

FolderDialog fDialog = new FolderDialog();

this.files = new List<string>();

fDialog.DisplayDialog();//无参数-对话框上默认说明文字，带一string类型参数-自定义说明文字

 this.path = fDialog.Path;//选择的文件夹路径

 if (!string.IsNullOrEmpty(path))

{

this.FillData(this.dataGridView1);

}

}



/// <summary>

 /// 填充数据到DataGridView

 /// </summary>

 /// <param name="dataGridView">dataGridView</param>

 public void FillData(DataGridView dataGridView)

{

this.GetAllFiles(this.path, this.type);

this.txtPath.Text = this.path;

if (this.files_path.Count > 0)

{

this.files = this.GetFileName(files_path);

this.dt.Clear();

for (int i = 0; i < files.Count; i++)

{

DataRow dr = this.dt.NewRow();

dr["NO."] = i + 1;

dr["ProgName"] = files[i];

this.dt.Rows.Add(dr);

}

dataGridView.DataSource = this.dt;

this.SetColumn(dataGridView);

}

else

{

MessageBox.Show("你选择的文件夹中还没有.txt文件", "提示");

}

}



/// <summary>

 /// 在DataGridView指定位置中添加列和相应属性

 /// </summary>

 /// <param name="dataGridView">dataGridView</param>

 private void SetColumn(DataGridView dataGridView)

{

dataGridView.AllowUserToAddRows = false;//禁止最后一行空行显示

 //dataGridView.RowHeadersVisible = false;//隐藏最左边状态栏

 //所有列居中并且禁止排序

 for (int i = 0; i < dataGridView.Columns.Count; i++)

{

//dataGridView.Columns[i].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;//内容居中

 dataGridView.Columns[i].SortMode = DataGridViewColumnSortMode.NotSortable;//禁止排序

 }

dataGridView.ColumnHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;//表头居中

 }



/// <summary>

 /// 获取选择目录中匹配match的文件

 /// </summary>

 /// <param name="path">路径</param>

 /// <param name="match">匹配</param>

 private void GetAllFiles(string path, string match)

{

this.files_path = new List<string>();

try

{

string[] fs = System.IO.Directory.GetFiles(path, match);

files_path.AddRange(fs);

}

catch (Exception ex)

{

throw new Exception(ex.Message.ToString());

}

}



/// <summary>

 /// 截取文件名

 /// </summary>

 /// <param name="files"></param>

 /// <returns></returns>

 private List<string> GetFileName(List<string> files)

{

List<string> fileName = new List<string>();

string name = string.Empty;

for (int i = 0; i < this.files_path.Count; i++)//遍历有所文件路径截取文件名称

 {

fileName.Add(Basic.SubStr(files[i]));

}

return fileName;

}



/// <summary>

 /// 鼠标单击单行时事件

 /// </summary>

 /// <param name="sender"></param>

 /// <param name="e"></param>

 private void dataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)

{

if (this.dataGridView1.Rows[e.RowIndex].Cells[0].ValueType == typeof(bool))

{

if (this.dataGridView1.Rows[e.RowIndex].Cells[0].EditedFormattedValue.ToString().Equals("True"))

{

this.dataGridView1.Rows[e.RowIndex].Cells[0].Value = false;

this.dataGridView1.Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.White;

}

else

{

this.dataGridView1.Rows[e.RowIndex].Cells[0].Value = true;

this.dataGridView1.Rows[e.RowIndex].DefaultCellStyle.BackColor = Color.GreenYellow;

}

}

}



/// <summary>

 /// 删除

 /// </summary>

 /// <param name="sender"></param>

 /// <param name="e"></param>

 private void btnDelete_Click(object sender, EventArgs e)

{

List<int> Selected = this.GetSelected(this.dataGridView1);//选择的索引

 int i = 0;

DialogResult dr;

if (Selected.Count == 0)

{

MessageBox.Show("没有选择任何行", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

}

else

{

dr = MessageBox.Show("是否删除所选行，删除后无法恢复，是否继续？", "系统提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);

if (dr == DialogResult.Yes)

{

foreach (int index in Selected)

{

string file_path = this.files_path[index];//获取文件的绝对路径

 if (Basic.IsFileInUse(file_path))//判断文件是否在使用

 {

MessageBox.Show("已删除了" + i.ToString() + "个文件，系统在尝试删除'正在使用'(" + file_path + ")文件时失败！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);

this.Close();

}

else

{

i++;

System.IO.File.Delete(file_path);

}

}

MessageBox.Show("成功删除了" + i.ToString() + "个文件！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);

this.FillData(this.dataGridView1);

}

}

}



/// <summary>

 /// 重命名

 /// </summary>

 /// <param name="sender"></param>

 /// <param name="e"></param>

 private void btnReName_Click(object sender, EventArgs e)

{

List<int> Selected = this.GetSelected(this.dataGridView1);//选择的索引

 if (Selected.Count == 0)

{

MessageBox.Show("没有选择任何行", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

}

else if (Selected.Count > 1)

{

MessageBox.Show("只能选择一行进行编辑", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Question);

}

else//编辑

 {

string filePath = this.files_path[Selected[0]].ToString();

this.et = new edit(filePath);

this.et.fo = this;

et.ShowDialog();

this.FillData(this.dataGridView1);

}

}



/// <summary>

 /// 获取选择行的索引号

 /// </summary>

 /// <param name="dataGridView">dataGridView</param>

 /// <returns>索引List集</returns>

 private List<int> GetSelected(DataGridView dataGridView)

{

List<int> Selected = new List<int>();

for (int i = 0; i < dataGridView.Rows.Count; i++)

{

if (dataGridView.Rows[i].Cells[0].FormattedValue.ToString() == "True")

{

Selected.Add(i);

}

}

return Selected;

}



/// <summary>

 /// 关闭

 /// </summary>

 /// <param name="sender"></param>

 /// <param name="e"></param>

 private void btnClose_Click(object sender, EventArgs e)

{

this.Close();

}

}

}

设计器代码照着图拖控件就行，如果你觉得对你有意义，可以下载或者转载，如有不对的地方，请指示，不要喷，谢谢！

源码下载，点击这里

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一切伟大的行动和思想，都有一个微不足道的开始。微不足道的我，正在吸取知识的土壤，希望能取得成功！不嫌弃我微不足道的，愿交天下好友！