if (openFileDialog1.ShowDialog() == DialogResult.OK)
{ //StreamWriter
StreamReader sr = new StreamReader(openFileDialog1.FileName, System.Text.Encoding.Default);
string line=null;
while ((line = sr.ReadLine()) != null)
{
textBox1.Text += sr.ReadLine()+"\r\n";
MessageBox.Show(textBox1.Text);
}
//line = sr.ReadToEnd();
//textBox1.Text = line;
//sr.Close(); }
{ //StreamWriter
StreamReader sr = new StreamReader(openFileDialog1.FileName, System.Text.Encoding.Default);
string line=null;
while ((line = sr.ReadLine()) != null)
{
textBox1.Text += sr.ReadLine()+"\r\n";
MessageBox.Show(textBox1.Text);
}
//line = sr.ReadToEnd();
//textBox1.Text = line;
//sr.Close(); }
{ //StreamWriter
StreamReader sr = new StreamReader(openFileDialog1.FileName, System.Text.Encoding.Default);
string line=null;
int i =0;
while ((line = sr.ReadLine()) != null and i%2==0)
{
textBox1.Text += sr.ReadLine()+"\r\n";
MessageBox.Show(textBox1.Text);
}
//line = sr.ReadToEnd();
//textBox1.Text = line;
//sr.Close(); }
while ( sr.ReadLine() != null && (line = sr.ReadLine()) != null)
{
textBox1.Text += sr.ReadLine()+"\r\n";
MessageBox.Show(textBox1.Text);
}
int flag=0;
while ((line = sr.ReadLine()) != null)
{
if(flag==0)
{
flag=1;
}
else
{
textBox1.Text += line+ "\r\n";
MessageBox.Show(line);
flag=0;
}
}
while ((line = sr.ReadLine()) != null && i%2==0)
{
i++;
textBox1.Text += sr.ReadLine()+"\r\n";
MessageBox.Show(textBox1.Text);
}
晕倒,我只是想表达那个意思,没注意到他在循环内部还有个sr.ReadLine,完全没有必要出现那个,直接用line赋值即可,这样就可以了,不会出现任何异常: while ( sr.ReadLine() != null && (line = sr.ReadLine()) != null)
{
textBox1.Text += line + "\r\n";
MessageBox.Show(textBox1.Text);
}