Jak w temacie. Jak wczytać cały plik do richtextboxa linia po linii?
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int counter = 0;
string line;
// Read the file and display it line by line.
System.IO.StreamReader file = new System.IO.StreamReader("D:\\test.txt");
while((line = file.ReadLine()) != null)
{
richTextBox1.Text += "\n" + line;
}
file.Close();
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richTextBox1.Text = File.ReadAllText(@"D:\test.txt");