Performance issue when using richtextbox.loadfile method to load a large *.rtf file.

Question

1.00/5 (1 vote)

See more:

C#

I want to display a large *.txt file to RichTextBox. The size is about 7MB.
When I use RichTextBox.LoadFile() method, it takes a long time(about 2 minutes) util it shown up. 
But if I use wordpad or any other free editors, it displayed very soon.
How can I improve the performance?
Please give me some advice.
 
The code is:
RichTextBox1.LoadFile(FilePath, RichTextBoxStreamType.RichText);

What I have tried:

i tried use memorystream to load,but it still very slow

Posted 9-Sep-16 5:08am

xuyunhai20160827

Updated 9-Sep-16 5:14am

Add a Solution

Comments

Patrice T 9-Sep-16 11:29am

You forgot to copy signature from original question.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

David_Wimbley · Answer 1 · 2016-09-09T05:14:00

Solution 1

You copied this question exactly, word for word. I suggest you look at the responses from where you copied it for your answer.

Performance issue when using RichTextBox.LoadFile method to load a large *.rtf file.[^]

Other links:

c# - What is the fastest way to load text file into RichTextBox? - Stack Overflow[^]

richtextbox.loadfile slow c - Google Search[^]

Posted 9-Sep-16 5:14am

David_Wimbley

v2

Comments

xuyunhai20160827 9-Sep-16 20:37pm

when i read file about 27M use File.ReadAllText, but it also takes about 17 minutes,can any other way to update speed