How to create a new text file while updating the existing text file

Pinku

when I click on the Update button it should update the text in the same folder path with the word RESULTS in front of the original filename . for the existing code its only updating the file. i want to append the RESULT keyword in front of the file name and its should overwrite it. please help.

4 Replies

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Sachin Singh4y ago
Accepted answer
public string ReadText(string path)
{
string texts= File.ReadAllText(path); // path:- c://VersionsFolder/txt1.txt
return texts;
}
save updated text each time to a new file with incrementing number.
public void CreateVersion(string updatedText)
{
string folderName="c://VersionsFolder/";
var lastUpdatedFile= Directory.GetFiles(folderName)
.OrderByDescending(f => f.LastWriteTime)
.First();
var fileName=Path.GetFileName(lastUpdatedFile);
int versionNo=0;
string newPath=string.Empty;
if (char.IsDigit(fileName[fileName.Length-1]))
{
versionNo=fileName[fileName.Length-1]+1;
newPath=lastUpdatedFile.Substring(0, lastUpdatedFile.Length - 1) + versionNo;
}else
{
versionNo=1;
newPath="Result"+lastUpdatedFile.Substring(0, lastUpdatedFile.Length - 1) + versionNo;
}
File.WriteAllText(newPath, updatedText);

}
Pinku4y ago
Thank you so much Sachin.. i am really greatful. :)
Pinku4y ago
file1.txt should remain the same. so when we update every time it should generate a new text file i.e Resultfile1.txt with updated data.
Sachin Singh4y ago
And the first file should remain in its original state after saving or the first file should also update?
means:-
file1.txt ===>welcome from c#Corner
Read it and modified==> welcome from cSharpCorner.

Resultfile1.txt===> welcome from cSharpCorner.
Then what do you want with your file1.txt it should be 'welcome from c#Corner' always or should be updated each time?
clarify then we can answer.