新人求助啊 如何让一个文件以txt文件形式打开并对其中内容进行读写啊 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 //1.正写日志 最新日志放最后面protected void Button1_Click(object sender, EventArgs e){ string strFilePath = Server.MapPath("log/log_200807_1.txt"); System.IO.FileStream fs = new System.IO.FileStream(strFilePath, System.IO.FileMode.Append); System.IO.StreamWriter sw = new System.IO.StreamWriter(fs, System.Text.Encoding.Default); sw.WriteLine("'" + DateTime.Now.ToString() + "'\t'zhangsan'\t'Login.aspx'\t'登录A'"); sw.Close(); fs.Close();}//2.倒写日志 最新日志放最前面protected void Button2_Click(object sender, EventArgs e){ string strFilePath = Server.MapPath("log/log_200807_1.txt"); string strOldText = File.ReadAllText(strFilePath, System.Text.Encoding.Default); File.WriteAllText(strFilePath, "'" + DateTime.Now.ToString() + "'\t'zhangsan'\t'Login.aspx'\t'登录B'\r\n", System.Text.Encoding.Default); File.AppendAllText(strFilePath, strOldText, System.Text.Encoding.Default);}//3.读日志文本到Labelprotected void Button3_Click(object sender, EventArgs e){ string strFilePath = Server.MapPath("log/log_200807_1.txt"); FileStream fs = new FileStream(strFilePath, FileMode.Open, FileAccess.Read); StreamReader sr = new StreamReader(fs, System.Text.Encoding.Default); string strLine = sr.ReadLine(); string str = ""; while (strLine != null) { str += strLine.ToString() + "<br/>"; strLine = sr.ReadLine(); } sr.Close(); fs.Close(); this.Label1.Text = str;}//4.读日志文本内容到DataTable及筛选后显示在GridViewprotected void Button4_Click(object sender, EventArgs e){ DataTable dt = new DataTable(); dt.Columns.Add("日志时间"); dt.Columns.Add("操作人员"); dt.Columns.Add("日志页面"); dt.Columns.Add("日志内容"); string strFilePath = Server.MapPath("log/log_200807_1.txt"); FileStream fs = new FileStream(strFilePath, FileMode.Open, FileAccess.Read); StreamReader sr = new StreamReader(fs, System.Text.Encoding.Default); string strLine = sr.ReadLine(); while (strLine != null) { string[] strArray = new string[4]; strArray = strLine.Split('\t'); DataRow dr = dt.NewRow(); dr[0] = strArray[0]; dr[1] = strArray[1]; dr[2] = strArray[2]; dr[3] = strArray[3]; dt.Rows.Add(dr); strLine = sr.ReadLine(); } sr.Close(); fs.Close(); //筛选 DataView dv = dt.DefaultView; dv.RowFilter = " 日志内容 Like '%A%' and 日志时间 >= '2008-7-8 14:12:50' "; //this.GridView1.DataSource = dt; this.GridView1.DataSource = dv; this.GridView1.DataBind();}//取得当前所应操作的日志文件的路径 private string GetLogFilePath() { string strFilePath = ""; string strYearMonth = DateTime.Now.ToString("yyyyMM"); string strLogDirPath = Server.MapPath("log"); //判断当前月份是否已有日志文件 string[] strFilesArray = Directory.GetFiles(strLogDirPath, "log_" + strYearMonth + "_*.txt"); if (strFilesArray.Length == 0) { strFilePath = Server.MapPath("log/log_" + strYearMonth + "_1.txt"); //之前没有本年月的日志文件 需要新建 using (File.Create(strFilePath)) { } } else { int intOrderID = 1; for (int i = 0; i < strFilesArray.Length; i++) { string strA = strFilesArray[i].Trim(); strA = strA.Substring(strA.LastIndexOf("_")+1); strA = strA.Replace(".txt", ""); int intA = Convert.ToInt32(strA); if (intA > intOrderID) intOrderID = intA; } strFilePath = Server.MapPath("log/log_" + strYearMonth + "_" + intOrderID.ToString() + ".txt"); this.Label1.Text = strFilePath; //之前有 需要判断最后一个是否超容 FileInfo fileInfo = new FileInfo(strFilePath); if (fileInfo.Length >= 1024) { //超容了 新建之 int intCount = intOrderID + 1; strFilePath = Server.MapPath("log/log_" + strYearMonth + "_" + intCount.ToString() + ".txt"); using (File.Create(strFilePath)) { } } } return strFilePath ; } 讀寫ini文件 [DllImport("kernel32")] private static extern long WritePrivateProfileString(string section, string key,string val,string filePath); [DllImport("kernel32")] private static extern int GetPrivateProfileString(string section, string key,string def, StringBuilder retVal,int size,string filePath); public void IniWriteValue(string Section,string Key,string Value,string filePath) { WritePrivateProfileString(Section,Key,Value,filePath); public string IniReadValue(string Section,string Key,string filePath) { StringBuilder temp = new StringBuilder(255); int i = GetPrivateProfileString(Section,Key,"",temp, 255, filePath); return temp.ToString(); } } 获取指定文件夹的大小 public long countsize( System.IO.DirectoryInfo dir) { long size=0; FileInfo[] files=dir.GetFiles(); foreach(System.IO.FileInfo info in files) { size+=info.Length; } DirectoryInfo[] dirs=dir.GetDirectories(); foreach(DirectoryInfo dirinfo in dirs) { size+=countsize(dirinfo); } return size; } 讀取資源檔: ResourceManager _textResManager = new ResourceManager("testproject.MultiLanguage_Eng", Assembly.GetExecutingAssembly()); string resString = _textResManager.GetString("keyname"); 请问C#怎么调用这个WebService? 不支持关键字: “provider”。 如何将通过教师ID查询到的信息放到各个教师信息的textbox中? 如何从文本文件里 指定行数开始读,从最后开始读几行。。。 关于读取excel到dataset的问题 C# access 日期字段的问题,请高手指点,谢谢…… 请问高手一个关于JMAIL的问题? 求一个 MF 视频编程的思路与资料( VC# 或 VC++ 均可!) 编译后的问题? EventArgs e在很多实践的参数中出现,但我不明白,介绍一下好吗? 提问 实在要疯了,知道的 帮忙一下啦
//1.正写日志 最新日志放最后面
protected void Button1_Click(object sender, EventArgs e)
{
string strFilePath = Server.MapPath("log/log_200807_1.txt");
System.IO.FileStream fs = new System.IO.FileStream(strFilePath, System.IO.FileMode.Append);
System.IO.StreamWriter sw = new System.IO.StreamWriter(fs, System.Text.Encoding.Default);
sw.WriteLine("'" + DateTime.Now.ToString() + "'\t'zhangsan'\t'Login.aspx'\t'登录A'");
sw.Close();
fs.Close();
}
//2.倒写日志 最新日志放最前面
protected void Button2_Click(object sender, EventArgs e)
{
string strFilePath = Server.MapPath("log/log_200807_1.txt");
string strOldText = File.ReadAllText(strFilePath, System.Text.Encoding.Default);
File.WriteAllText(strFilePath, "'" + DateTime.Now.ToString() + "'\t'zhangsan'\t'Login.aspx'\t'登录B'\r\n", System.Text.Encoding.Default);
File.AppendAllText(strFilePath, strOldText, System.Text.Encoding.Default);
}//3.读日志文本到Label
protected void Button3_Click(object sender, EventArgs e)
{
string strFilePath = Server.MapPath("log/log_200807_1.txt");
FileStream fs = new FileStream(strFilePath, FileMode.Open, FileAccess.Read);
StreamReader sr = new StreamReader(fs, System.Text.Encoding.Default);
string strLine = sr.ReadLine();
string str = "";
while (strLine != null)
{
str += strLine.ToString() + "<br/>";
strLine = sr.ReadLine();
}
sr.Close();
fs.Close();
this.Label1.Text = str;
}
//4.读日志文本内容到DataTable及筛选后显示在GridView
protected void Button4_Click(object sender, EventArgs e)
{
DataTable dt = new DataTable();
dt.Columns.Add("日志时间");
dt.Columns.Add("操作人员");
dt.Columns.Add("日志页面");
dt.Columns.Add("日志内容");
string strFilePath = Server.MapPath("log/log_200807_1.txt");
FileStream fs = new FileStream(strFilePath, FileMode.Open, FileAccess.Read);
StreamReader sr = new StreamReader(fs, System.Text.Encoding.Default);
string strLine = sr.ReadLine();
while (strLine != null)
{
string[] strArray = new string[4];
strArray = strLine.Split('\t');
DataRow dr = dt.NewRow();
dr[0] = strArray[0];
dr[1] = strArray[1];
dr[2] = strArray[2];
dr[3] = strArray[3];
dt.Rows.Add(dr);
strLine = sr.ReadLine();
}
sr.Close();
fs.Close();
//筛选
DataView dv = dt.DefaultView;
dv.RowFilter = " 日志内容 Like '%A%' and 日志时间 >= '2008-7-8 14:12:50' ";
//this.GridView1.DataSource = dt;
this.GridView1.DataSource = dv;
this.GridView1.DataBind();
}//取得当前所应操作的日志文件的路径
private string GetLogFilePath()
{
string strFilePath = "";
string strYearMonth = DateTime.Now.ToString("yyyyMM");
string strLogDirPath = Server.MapPath("log");
//判断当前月份是否已有日志文件
string[] strFilesArray = Directory.GetFiles(strLogDirPath, "log_" + strYearMonth + "_*.txt");
if (strFilesArray.Length == 0)
{
strFilePath = Server.MapPath("log/log_" + strYearMonth + "_1.txt");
//之前没有本年月的日志文件 需要新建
using (File.Create(strFilePath))
{ }
}
else
{
int intOrderID = 1;
for (int i = 0; i < strFilesArray.Length; i++)
{
string strA = strFilesArray[i].Trim();
strA = strA.Substring(strA.LastIndexOf("_")+1);
strA = strA.Replace(".txt", "");
int intA = Convert.ToInt32(strA);
if (intA > intOrderID)
intOrderID = intA;
} strFilePath = Server.MapPath("log/log_" + strYearMonth + "_" + intOrderID.ToString() + ".txt");
this.Label1.Text = strFilePath;
//之前有 需要判断最后一个是否超容
FileInfo fileInfo = new FileInfo(strFilePath);
if (fileInfo.Length >= 1024)
{
//超容了 新建之
int intCount = intOrderID + 1;
strFilePath = Server.MapPath("log/log_" + strYearMonth + "_" + intCount.ToString() + ".txt");
using (File.Create(strFilePath))
{ }
}
}
return strFilePath ;
} 讀寫ini文件
[DllImport("kernel32")]
private static extern long WritePrivateProfileString(string section,
string key,string val,string filePath);
[DllImport("kernel32")]
private static extern int GetPrivateProfileString(string section,
string key,string def, StringBuilder retVal,int size,string filePath); public void IniWriteValue(string Section,string Key,string Value,string filePath)
{
WritePrivateProfileString(Section,Key,Value,filePath);
public string IniReadValue(string Section,string Key,string filePath)
{
StringBuilder temp = new StringBuilder(255);
int i = GetPrivateProfileString(Section,Key,"",temp,
255, filePath);
return temp.ToString(); } } 获取指定文件夹的大小
public long countsize( System.IO.DirectoryInfo dir)
{
long size=0;
FileInfo[] files=dir.GetFiles();
foreach(System.IO.FileInfo info in files)
{
size+=info.Length;
}
DirectoryInfo[] dirs=dir.GetDirectories();
foreach(DirectoryInfo dirinfo in dirs)
{
size+=countsize(dirinfo);
}
return size;
} 讀取資源檔:
ResourceManager _textResManager = new ResourceManager("testproject.MultiLanguage_Eng", Assembly.GetExecutingAssembly());
string resString = _textResManager.GetString("keyname");