Save as dialog box for pocket pc in c# - C# Discussion Boards

16-Jun-04 0:08

With a bit of help from Heath Stewart i have a programme up and running with a datagrid, the first column of which is a check box.

What i now need is to be able to lock the grid down except for the check box column, I could just set each column to read only but this still allows the user to create new rows. New rows are added programatically and i need to restrict the user from doing this.

Any help you guys can give me would be appreciated.

Cheers

KP

the last free name16-Jun-04 3:37

the last free name

16-Jun-04 3:37

I can't remember the exact details but you can do it with the dataview.allowNew method

exhaulted16-Jun-04 3:59

16-Jun-04 3:59

Can you bind a DataView to a DataGrid even though the DataGrid is already bound to a DataSet?
If so, can anyone provide some code or a link to some for me?

Cheers

KP

Heath Stewart16-Jun-04 4:13

Heath Stewart

16-Jun-04 4:13

Yes, just set DataGrid.DataSource to an instance of a DataView. This will bind the DataGrid to a DataView instead of the DataSet, but ultimately the DataSet (or DataTable) is reflected by the DataView since the DataView is created on a DataTable within a DataSet.

Microsoft MVP, Visual C#
My Articles

exhaulted16-Jun-04 4:55

Save as dialog box for pocket pc in c#

16-Jun-04 4:55

Thanks for your help, i'll try it tomorrow when i get a chance.

KP

yyuull15-Jun-04 23:37

yyuull

15-Jun-04 23:37

I'm doing a program in c# for a pocket-pc that has a "save as" dialog-box. When I execute it in the explorer, It's ok, but when I try to execute it in pocket-pc it doesn't work, in order to show the dialog-box only appears the text of the file. There is someone who can help me?
Thanks!!

This is the code:

private void Command3_Click(object sender, System.EventArgs e)
{

Response.ContentType="text/plain";
Response.AddHeader( "content-disposition","attachment; filename=Testa1.txt");

FileStream sourceFile = new FileStrea(@"C:\Inetpub\wwwroot\FitxIdatziWeb\Testa1.txt", FileMode.Open);
long FileSize;
FileSize = sourceFile.Length;
byte[] getContent = new byte[(int)FileSize];
sourceFile.Read(getContent, 0, (int sourceFile.Length);
sourceFile.Close();

Response.BinaryWrite(getContent);

}
Dead | X|

Re: Save as dialog box for pocket pc in c#

Dave Kreskowiak16-Jun-04 3:59

Dave Kreskowiak

16-Jun-04 3:59

You might want to change the ContentType to "application/octet-stream", but leave the "content-disposition" header in. Since the browser already knows how to render "text/plain" content, it won't ask you to save it. Changing it to "application/octet-stream" is about as generic as it gets and the browser should treat it as an unknown stream type.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Save as dialog box for pocket pc in c#

Anonymous18-Jun-04 3:22

Anonymous

18-Jun-04 3:22

I change the ContentType to "application/octet-stream", but it doesn't work. Maybe I must put Response.Buffer = true ; Response.Clear();and in the end Response.End(); but it doesn't work.
If I put Response.ContentType="text/salt+html"; I get a dialog box and download the file. But when I read the text,it is different, it has html format but anything of the original text. Thanks for the answer and sorry for my low level english.
Cry | :((

Flicker free panel

PrebKlok15-Jun-04 22:31

PrebKlok

15-Jun-04 22:31

I am using these lines, to avoid flicker in my program:

SetStyle(ControlStyles.UserPaint, true);<br />
SetStyle(ControlStyles.DoubleBuffer, true);<br />
SetStyle(ControlStyles.AllPaintingInWmPaint, true);<br />
<br />
private void timer1_Tick(object sender, System.EventArgs e)<br />
{<br />
  Invalidate();<br />
}<br />
<br />
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)<br />
{<br />
  Graphics g = e.Graphics;<br />
  ...<br />
}<br />

However, it dont work for panels, only for the main window, if i try like this:

private void timer1_Tick(object sender, System.EventArgs e)<br />
{<br />
    panel1.Invalidate();<br />
}<br />
<br />
private void panel1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)<br />
{<br />
  Graphics g = e.Graphics;<br />
  ...<br />
}<br />

It there a simple way to make panels flicker free?

Meysam Mahfouzi15-Jun-04 23:37

Meysam Mahfouzi

15-Jun-04 23:37

I wonder where you have written these lines of code:

SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.DoubleBuffer, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true);

If you created your custom panel, so it should work flicker free.

My Weblog

PrebKlok15-Jun-04 23:44

PrebKlok

15-Jun-04 23:44

custom panel?

I just drag a panel from the toolbox.

The lines a placed in the constructor.

Meysam Mahfouzi15-Jun-04 23:52

Meysam Mahfouzi

15-Jun-04 23:52

That's why it's not flicker free. You should make a custom panel, which derives from Panel control, and then you just need to add those lines of code in the constructor of your custom panel. After compiling and adding it to your form, it will work flicker free.

This article may help you:

Flicker free drawing using GDI+ and C#[^]

My Weblog

Heath Stewart16-Jun-04 4:12

Heath Stewart

16-Jun-04 4:12

To note, it's much faster to use

SetStyle(ControlStyles.AllPaintingInWmPaint<br />
  | ControlStyles.DoubleBuffer | ControlStyles.UserPaint, true);

. This results in fewer calls since all three enumerations are OR'd together at compile time. That's what the FlagsAttribute allows on an enumeration like ControlStyles (all enumerations denoting plurality in the .NET FCL typically have the FlagsAttribute).

Microsoft MVP, Visual C#
My Articles

Meysam Mahfouzi16-Jun-04 17:26

Meysam Mahfouzi

16-Jun-04 17:26

Nice point to mention

My Weblog

PictureBox Problem

The_Soul_Of_Rock15-Jun-04 21:14

The_Soul_Of_Rock

15-Jun-04 21:14

the problem is here:

<br />
string currentPath;<br />
<br />
private void frmPicture_Load(object sender, System.EventArgs e)<br />
{<br />
  currentPath = @"D:\Image\1.jpg";<br />
  this.pictureBox1.Image = Image.FromFile(currentPath);<br />
}<br />
<br />
private void updateButton_Click(object sender, System.EventArgs e)<br />
{<br />
  if (File.Exists(currentPath))<br />
  {<br />
     string newPath = Application.StartupPath + @"\PatientImages\" + arrISN[index].ToString() + ext;<br />
     this.pictureBox1.Image = null;<br />
     File.Copy(currentPath, newPath, true);<br />
  }<br />
}<br />

Error: the process cannot access the file "D:\.." because it is being used by another process.
what can i do to correct this problem.
thanks.

Rock Throught The Night

exhaulted15-Jun-04 22:08

15-Jun-04 22:08

I assume it's the File.Copy line that throws the error?
Out of interest, you've not got the picture your copying open in another application have you?

KP

The_Soul_Of_Rock15-Jun-04 23:07

The_Soul_Of_Rock

15-Jun-04 23:07

i known the error is File.Copy line but i cannot find out the to correct it.
please help me again
thanks

Rock Throught The Night

exhaulted15-Jun-04 23:26

15-Jun-04 23:26

I have just tried the code with some adjustments for my file structure and it works fine. The only difference between my code and yours is the newpath string, i set mine to @"c:\golfball2.bmp" and when i clicked the update button i got a copy of golfball.bmp called golfball2.bmp.

I assume the problem is that the destination for your file is currently being used by another application, or even by your application. Try hard coding the newPath string to @"c:\test.jpg". If that works then you will have to look at where your trying to write the copy to.

Let me know how you get on.

KP

The_Soul_Of_Rock15-Jun-04 23:39

The_Soul_Of_Rock

15-Jun-04 23:39

the " currentPath " and the newPath is the same Folder and the " currentFileName " and "newFileName" is the same too
so the error occur.

Rock Throught The Night