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

Question

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.

Sachin Singh · 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); }

Pinku · Answer

Thank you so much Sachin.. i am really greatful. :)

Pinku · Answer

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 Singh · Answer

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.