How to Customize my DataGrid - C# Discussion Boards

bmk_shepherd16-Feb-05 0:29

16-Feb-05 0:29

I want to write a program that monitor all key press on my computer, even when users are currently working with other program.
I've tried IMessageFilter interface but it didn't work, it do only when my applicantion got focus.
Anyone help me?
Thank you very much.

Re: Monitor all key press!

Stefan Troschuetz16-Feb-05 1:21

Stefan Troschuetz

16-Feb-05 1:21

You'll have to use a global system hook. Take a look at the following articles here on Code Project:
Processing Global Mouse and Keyboard Hooks in C#[^]
Global System Hooks in .NET[^]

www.troschuetz.de

Re: Monitor all key press!

bmk_shepherd19-Feb-05 15:14

bmk_shepherd

19-Feb-05 15:14

thank you stefan. I'm able to do it now.;)

Muliple Instance warning

Adnan Siddiqi16-Feb-05 0:23

Adnan Siddiqi

16-Feb-05 0:23

Hello

i am getting muliple instances warning on the following line:

DirectoryEntry W3SVC = new DirectoryEntry("IIS://" + ServerName + "/w3svc");
how can I getrid of this?

-adnan

Unable to check INT values with ==

Seraphin15-Feb-05 23:04

Seraphin

15-Feb-05 23:04

I have a problem with this code. I am reading a value from a SQL Server and try to check it.

<br />
				while(rdr.Read())<br />
				{<br />
					if(rdr.GetSqlValue(4)==1)<br />
					{<br />
						ArrayMandant.Add(rdr.GetString(0) + "#" + rdr.GetString(1) + "#" +<br />
 						                 rdr.GetString(2) + "#" + rdr.GetString(3) + "#" +<br />
							             rdr.GetValue(4).ToString() + "#" + rdr.GetString(5));<br />
					}<br />
				}<br />

I get a build error. Operator "==" cannot be used on objects and int. How I am able to check this value ?

Re: Unable to check INT values with ==

Stefan Troschuetz15-Feb-05 23:20

Stefan Troschuetz

15-Feb-05 23:20

You could either use a method of the SqlDataReader class that already returns an integer:

if (rdr.GetInt32(4) == 1)

or cast the return value of GetSqlValue.

if (((int) rdr.GetSqlValue(4)) == 1)

www.troschuetz.de

Re: Unable to check INT values with ==

Kodanda Pani15-Feb-05 23:41

Kodanda Pani

15-Feb-05 23:41

Hi,

You are getting that error because GetSqlValue is returning an object and you are trying to compare it with an int. Trying using GetSqlInt32 to get the column value instead of GetSqlValue.

Thanks
SGS

How to Customize my DataGrid

innocent7315-Feb-05 21:33

innocent73

15-Feb-05 21:33

Hello c# professionals,
I would like to customize my data grid like a SQL Server database table.This means when I press the ENTER key the cursor must move to the next cell.And when the cursor at the last column of the row and by pressing the ENTER key the cursor must move to the next line and first column..
Can anyone help?

Windows Shell Integration?

Anonymous15-Feb-05 21:03

Anonymous

15-Feb-05 21:03

I would to add to the default Windows context menu (copy/cut/delete/cancel) (that appear when the user right-click inside a textbox) a new voice during my software' installation.
If that voice is pusshed it calls my software passing a "pointer" to that textmenu, so i can set its text with what i want.
How can i do? I know to use Windows Shell integration, but where can i found these insformation? Iìve serched in google, msdn and in codeproject but i've founded nothing?

Please answer me becouse it is important.
Thanks

C# networking. text sent over network transforms

Member 154579515-Feb-05 20:51

Member 1545795

15-Feb-05 20:51

Hi guys !

would be very thankful if somebody suggested what is happening here and how i can resolve

this issue. the problem is that iam encrypting and sending messages over the LAN with

tcpclient stream class. on the receiving end i am trying to decrypt the message but a get a

whole set of different characters
no where near the source message

iam using

client.GetStream().EndRead(ar);

followed by

Encoding.ASCII.GetString(readBuffer, 0, BytesRead - 1);

thanks in advance

manishjadhav

Re: C# networking. text sent over network transforms

Colin Angus Mackay16-Feb-05 0:05

Colin Angus Mackay

16-Feb-05 0:05

This might sound obvious, but: What encoding is being used at the server end?

Do you want to know more?
WDevs.com - Open Source Code Hosting, Blogs, FTP, Mail and Forums

Re: C# networking. text sent over network transforms

Member 154579516-Feb-05 14:57

Member 1545795

16-Feb-05 14:57

hi colin thanks very much for the quick response.

i am using ASCII encoding right now on the server side but i have tried unicode as well but the characters still get tampered. please guide

thanks

How to open all the pages in .tif files?

Deepa3015-Feb-05 19:17

Deepa30

15-Feb-05 19:17

Hi
When i open a .tif file in picture box, i should be able to see or open all the pages. A .tif file can have any number of pages. I should be able to display all the pages in the picture box one by one. How can i do this?

I also need to zoom in and zoom out the image. Also scrolling of the image.

Can anyone help me? If possible please send me the code to open multiples pages of .tif files, zoom in and zoom out of image and scrolling of image.

Re: How to open all the pages in .tif files?

Gavin Jeffrey15-Feb-05 20:21

Gavin Jeffrey

15-Feb-05 20:21

you need to iterate through the tif file to get each individual image -

<br />
System.Drawing.Image i = System.Drawing.Image.FromStream(mem);<br />
int count = i.GetFrameCount(System.Drawing.Imaging.FrameDimension.Page);<br />
for (int x = 0 ; x < count ; x++)<br />
{<br />
   i.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Page,x);<br />
   Bitmap bmp = new Bitmap(i, i.Width / 2 * 140 / 100, i.Height * 140 / 100);<br />
}<br />

Then if you want to zoom the easiest way is probably just to change the width and height of your image.

Re: How to open all the pages in .tif files?

Deepa3015-Feb-05 23:44

Deepa30

15-Feb-05 23:44

Thanks a lot for this help.

can you tell me how can i display the corresponding frames in the picturebox?
right now the first page gets displayed. when i press the "next" button, i need the second page to be displayed in the picture box.

Re: How to open all the pages in .tif files?

Gavin Jeffrey16-Feb-05 0:46

Gavin Jeffrey

16-Feb-05 0:46

<br />
//declare your image and a count as a class variable i.e.<br />
System.Drawing.Image i = null;<br />
int imageIndex = 0;<br />
<br />
//then in your constructor (or form load) initialize your image and display 1st one i.e. <br />
public myForm()<br />
{<br />
   System.Drawing.Image i = System.Drawing.Image.FromStream(mem);<br />
   i.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Page,imageIndex);<br />
   myPictureBox.Image = i;<br />
}<br />
<br />
//then in your button click event (for next) put the following code<br />
private void button_Click(object sender, System.EventArgs e)<br />
{<br />
   if(imageIndex >= i.GetFrameCount(System.Drawing.Imaging.FrameDimension.Page))<br />
   {<br />
      MessageBox.show("Reached end of images in tif");<br />
      return;<br />
   }<br />
   imageIndex++;<br />
   i.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Page,imageIndex);<br />
   myPictureBox.Image = i;<br />
}<br />

You may have to update or refresh the pictureBox (but i dont think so)

Re: How to open all the pages in .tif files?

Deepa3016-Feb-05 1:26

Deepa30

16-Feb-05 1:26

Hi
Thanks a lot. I have got the solution. I used a static variable and did it.

Can i have your personal id? This is incase of future help?

Re: How to open all the pages in .tif files?

Gavin Jeffrey17-Feb-05 10:34

Gavin Jeffrey

17-Feb-05 10:34

I dont know how helpful I could be (I can try but I think there are many more bright people here on cp!) but you are welcome to contact me via email if you need help with something - gavirj2002 at yahoo.co.uk

Equivalent of Delay in C#?

Gregg Holter15-Feb-05 18:18

Gregg Holter

15-Feb-05 18:18

hi!
How could i implement delay in c#? that will logicallylook like this:

while<br />
{<br />
process1();<br />
delay(5);<br />
}

thanks!!!

Re: Equivalent of Delay in C#?

S. Senthil Kumar15-Feb-05 18:27

S. Senthil Kumar

15-Feb-05 18:27

Use the Thread.Sleep() method.

Regards
Senthil

Re: Equivalent of Delay in C#?

Gregg Holter15-Feb-05 18:31

Gregg Holter

15-Feb-05 18:31

Thanks Senthil!!! Smile | :)

accessing database using webservice

ronin177015-Feb-05 15:57

ronin1770

15-Feb-05 15:57

wanna explore this

any sample code for this topic.....

thanx in advance

Re: accessing database using webservice

Kodanda Pani15-Feb-05 18:07

Kodanda Pani

15-Feb-05 18:07

Hi ronin,

You can access the database from the webservice in the same way you access from the other applications. The following lines of code connect to the database and return the results in the form of a dataset.

[WebMethod]
public DataSet GetData()
{
SqlConnection conn = new SqlConnection();
string connstring = "Persist Security Info=false; Integrated Security =false; database=DATABASENAME; server=DATABASESERVERNAME; User ID=USERID; Password=PASSWORD";
conn.ConnectionString = connstring;
DataSet ds = new DataSet("Employee Data Set");
SqlDataAdapter adptr = new SqlDataAdapter("select * from TABLE NAME", connstring);
adptr.Fill(ds);
return ds;

}

Hope this will help you.

Regards
SGS

Re: accessing database using webservice

padvit15-Feb-05 20:10

padvit

15-Feb-05 20:10

The above reply seems to be fine I would like to add some details. Please do take care connection string settings and securtiy

Padvit

memory leaks?

15-Feb-05 15:32

i have created a server and client application.

i have ran the server but after a few days of running, it seems to utilize almost 100% of the processor, is this a problem of memory allocation (memory leaks)? if so, what should i do to address this problem? what are the tools which can be used to check if there exists any memory leaks?

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.