writing (inserting) text affter some character

Question

Hi I want to write (insert) some text in existing text file after some character from the text file. For example to write text from text box after 50-th character in my text file. I use file stream stream reader and stream writer. thanks

Dozd · Answer

Thanks for answer. I think the problem with solution that you suggest is limitation of int type. If we have sting which contain more characters then integer could accept - so we need double - then we can not use substring method (it has integer for argument). I made solution using lines instant of characters but the idea was to use characters. If somebody has idea is good to be post.

Kirtan Patel · Answer

private void button1_Click(object sender EventArgs e) { int Length = textBox1.Text.Length; string TextData = textBox1.Text; string SubData = TextData.ToString().Substring(50); StreamWriter sw = new StreamWriter(Test.txt); sw.Write(SubData); sw.Close(); }