जवाबों:
आप इसके लिए उपयोग कर सकते हैं File.AppendAllText
:
File.AppendAllText(@"c:\path\file.txt", "text content" + Environment.NewLine);
एक विकल्प! लेकिन पहला बहुत सरल है। फ़ाइल हेरफेर के लिए शायद अंतिम उपयोग:
//Method 1 (I like this)
File.AppendAllLines(
"FileAppendAllLines.txt",
new string[] { "line1", "line2", "line3" });
//Method 2
File.AppendAllText(
"FileAppendAllText.txt",
"line1" + Environment.NewLine +
"line2" + Environment.NewLine +
"line3" + Environment.NewLine);
//Method 3
using (StreamWriter stream = File.AppendText("FileAppendText.txt"))
{
stream.WriteLine("line1");
stream.WriteLine("line2");
stream.WriteLine("line3");
}
//Method 4
using (StreamWriter stream = new StreamWriter("StreamWriter.txt", true))
{
stream.WriteLine("line1");
stream.WriteLine("line2");
stream.WriteLine("line3");
}
//Method 5
using (StreamWriter stream = new FileInfo("FileInfo.txt").AppendText())
{
stream.WriteLine("line1");
stream.WriteLine("line2");
stream.WriteLine("line3");
}
या आप उपयोग कर सकते हैं File.AppendAllLines(string, IEnumerable<string>)
File.AppendAllLines(@"C:\Path\file.txt", new[] { "my text content" });
TextWriter क्लास को देखना चाहते हैं ।
//Open File
TextWriter tw = new StreamWriter("file.txt");
//Write to file
tw.WriteLine("test info");
//Close File
tw.Close();
File.AppendText यह करेंगे:
using (StreamWriter w = File.AppendText("textFile.txt"))
{
w.WriteLine ("-------HURRAY----------");
w.Flush();
}
तकनीकी रूप से सबसे अच्छा तरीका शायद यही है:
private static async Task AppendLineToFileAsync([NotNull] string path, string line)
{
if (string.IsNullOrWhiteSpace(path))
throw new ArgumentOutOfRangeException(nameof(path), path, "Was null or whitepsace.");
if (!File.Exists(path))
throw new FileNotFoundException("File not found.", nameof(path));
using (var file = File.Open(path, FileMode.Append, FileAccess.Write))
using (var writer = new StreamWriter(file))
{
await writer.WriteLineAsync(line);
await writer.FlushAsync();
}
}
//display sample reg form in notepad.txt
using (StreamWriter stream = new FileInfo("D:\\tt.txt").AppendText())//ur file location//.AppendText())
{
stream.WriteLine("Name :" + textBox1.Text);//display textbox data in notepad
stream.WriteLine("DOB : " + dateTimePicker1.Text);//display datepicker data in notepad
stream.WriteLine("DEP:" + comboBox1.SelectedItem.ToString());
stream.WriteLine("EXM :" + listBox1.SelectedItem.ToString());
}
हम प्रयोग कर सकते हैं
public StreamWriter(string path, bool append);
फ़ाइल खोलते समय
string path="C:\\MyFolder\\Notes.txt"
StreamWriter writer = new StreamWriter(path, true);
पहला पैरामीटर एक पूर्ण फ़ाइल पथ रखने के लिए एक स्ट्रिंग है दूसरा पैरामीटर एपेंड मोड है, इस मामले में यह सच है
फ़ाइल के साथ लेखन किया जा सकता है:
writer.Write(string)
या
writer.WriteLine(string)
नमूना कोड
private void WriteAndAppend()
{
string Path = Application.StartupPath + "\\notes.txt";
FileInfo fi = new FileInfo(Path);
StreamWriter SW;
StreamReader SR;
if (fi.Exists)
{
SR = new StreamReader(Path);
string Line = "";
while (!SR.EndOfStream) // Till the last line
{
Line = SR.ReadLine();
}
SR.Close();
int x = 0;
if (Line.Trim().Length <= 0)
{
x = 0;
}
else
{
x = Convert.ToInt32(Line.Substring(0, Line.IndexOf('.')));
}
x++;
SW = new StreamWriter(Path, true);
SW.WriteLine("-----"+string.Format("{0:dd-MMM-yyyy hh:mm:ss tt}", DateTime.Now));
SW.WriteLine(x.ToString() + "." + textBox1.Text);
}
else
{
SW = new StreamWriter(Path);
SW.WriteLine("-----" + string.Format("{0:dd-MMM-yyyy hh:mm:ss tt}", DateTime.Now));
SW.WriteLine("1." + textBox1.Text);
}
SW.Flush();
SW.Close();
}