Question

c# richtextbox 读取txt文件只显示最后一行

FileStream fs = new FileStream(openFileDialog1.FileName, FileMode.Open);
StreamReader fd = new StreamReader(fs);
fd.BaseStream.Seek(0, SeekOrigin.Begin);
while (fd.Peek() > -1)
{
richTextBox1.Text = fd.ReadLine();
}
fd.Close();
fs.Close();
}

Answer 1

试试看下面的代码

StreamReader sr = new StreamReader(openFileDialog1.FileName);
            string result = sr.ReadLine();
            while(!string.IsNullOrEmpty(result))
            {
                result = sr.ReadLine();
            }
richTextBox1.Text =  result;

Answer 2

richTextBox1.Text = fd.ReadLine();

应该是
richTextBox1.Text += fd.ReadLine();