Hi All,
When i load a large rtf file (1.7 MB) in rich text box, and try to use form resize for resizing the text box, the rtb takes a very long time to redraw. Is there a way to reduce this time? Thanks in advance.
Thanks
Ramses
RSVP |
| Ramses2 Thursday, September 10, 2009 11:05 AM |
void Form1_Resize(object sender, EventArgs e)
{
richTextBox1.Width = this.Width - 30;
richTextBox1.Height = this.Height - 80;
this.richTextBox1.Refresh();
}
the control is taking time to redraw itself because rtf file is huge.. anyway I have observed some bttr performanceon refreshing rtb control on " resize" event.
Paras - Marked As Answer byLing WangMSFT, ModeratorThursday, September 17, 2009 3:27 AM
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| paras kumar Tuesday, September 15, 2009 12:41 PM |
Hi Ramses, Can you pleasenshare the code because for me rtb is not taking long time to redraw. The rtf file i have used is around 4.5 Mb. Here is the code I have tried:
public
Form1()
{
InitializeComponent();
richTextBox1.LoadFile(
@"C:\Users\parask\Desktop\paras.rtf");
}
private void button1_Click(object sender, EventArgs e)
{
richTextBox1.Height = richTextBox1.Height * 2;
richTextBox1.Width = richTextBox1.Width * 2;
}
|
| paras kumar Thursday, September 10, 2009 11:40 AM |
Hi Paras,
Do this -
Remove the LoadFile call from Form1() constructor.
And changed the button1 click as follows
privatevoidbutton1_Click(objectsender,EventArgse)
{
richTextBox1.LoadFile(
@"C:\Users\parask\Desktop\paras.rtf");
}
Now add a Form1 resize event handler and put your button related code inside the Form1 resize handler
private void Form1_Resize(objectsender,EventArgse)
{
richTextBox1.Height = richTextBox1.Height * 2;
richTextBox1.Width = richTextBox1.Width * 2;
}
Now try to resize the form, by either extending its height or width and then let me know the results.
Thanks
Ramses
RSVP - Edited byRamses2 Friday, September 11, 2009 12:11 PMAdded more infor
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| Ramses2 Friday, September 11, 2009 12:10 PM |
dont use resize event handler. use ResizeEnd, it'll work fine.
- Paras - Unproposed As Answer byRamses2 Tuesday, September 15, 2009 6:33 AM
- Proposed As Answer byparas kumar Friday, September 11, 2009 5:27 PM
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| paras kumar Friday, September 11, 2009 5:27 PM |
Hi Paras,
I tried your suggestion, it slightly improved the situation, but the issue still remains. Its still taking a long time to redraw all the text, especially when the text is unicode and has different formatting features like bold etc enabled.
Thanks
Ramses
RSVP |
| Ramses2 Tuesday, September 15, 2009 6:36 AM |
Can you zip and send me your project to insigniya@gmail.com.
Paras |
| paras kumar Tuesday, September 15, 2009 8:12 AM |
Sent to you mail
RSVP |
| Ramses2 Tuesday, September 15, 2009 10:29 AM |
void Form1_Resize(object sender, EventArgs e)
{
richTextBox1.Width = this.Width - 30;
richTextBox1.Height = this.Height - 80;
this.richTextBox1.Refresh();
}
the control is taking time to redraw itself because rtf file is huge.. anyway I have observed some bttr performanceon refreshing rtb control on " resize" event.
Paras - Marked As Answer byLing WangMSFT, ModeratorThursday, September 17, 2009 3:27 AM
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|
| paras kumar Tuesday, September 15, 2009 12:41 PM |
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