C # - Empty txt content, and additional content

C # emptied the contents of txt, and additional content

bruce135lee

1, empty the contents of the txt

public void ClearTxt(String txtPath)  {  
     String appDir = System.AppDomain.CurrentDomain.BaseDirectory + @"Txt\" + txtPath;  
     FileStream stream = File.Open(appDir, FileMode.OpenOrCreate, FileAccess.Write);  
     stream.Seek(0, SeekOrigin.Begin);  
     stream.SetLength(0);  
     stream.Close();  
}  

2, the additional content to txt

1. public void SaveFile(string str,String txtPath,bool saOrAp) {  
2.   
3.            String appDir = System.AppDomain.CurrentDomain.BaseDirectory + @"Txt\" + txtPath;  
4.            StreamWriter sw = new StreamWriter (appDir, saOrAp); // saOrAp denotes a cover or additionally  
5.            sw.WriteLine(str);  
6.            sw.Close();  
7.        }