WPF 逐行读取TextBox内容

StringCollection lines = new StringCollection();int lineCount = textBox1.LineCount;for (int line = 0; line < lineCount; line++)        lines.Add(textBox1.GetLineText(line));return lines;

逐行读取外部文本内容：

using(System.IO.TextReader tr= new StreamReader("...\\readme.txt"))

{

do

{

    string LineText = tr.ReadLine();

}while(tr.Peek()!=-1);

}