C# - Read .txt file into TextBox
63,273
if you just need the complete text, you should use the function File.ReadAllText
- pass it the FileName/Path selected in the dialoge (openFileDialog1.FileName
).
to load for example the content into a textbox, you can write:
textbox1.Text = File.ReadAllText(openFileDialog1.FileName);
opening and using streams is a little bit more complicated, for that you should look up the using - statement
Author by
Jeagr
Updated on July 21, 2022Comments
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Jeagr almost 2 years
I am trying to read a .txt file into a multi-line text box with the following code. I have gotten the file dialog button to work perfectly, but I am not sure how to get the actual text from the fiile into the textbox. Here is my code. Can you help?
private void button_LoadSource_Click(object sender, EventArgs e) { Stream myStream = null; OpenFileDialog openFileDialog1 = new OpenFileDialog(); openFileDialog1.InitialDirectory = "c:\\"; openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*"; openFileDialog1.FilterIndex = 2; openFileDialog1.RestoreDirectory = true; if (openFileDialog1.ShowDialog() == DialogResult.OK) { try { if ((myStream = openFileDialog1.OpenFile()) != null) { using (myStream) { // Insert code to read the stream here. } } } catch (Exception ex) { MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message); } } }