Visual Basic

Re: adding images in the datagridview

31-May-07 20:06

Is this in ASP.NET ? No, that's obviously not right ( or you wouldn't be asking... ). You'd need to put an img tag with this path into the row, otherwise you're just showing the path to the image.

Christian Graus - Microsoft MVP - C++
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Sonia Gupta31-May-07 20:16

Sonia Gupta

31-May-07 20:16

Hello Christian Sir,
I am using Window Application.I wanted to add the image in the third column of every row.I mentioned the code.Was not that right? Can u provide some rectification to show the image in the datagridview.

Re: adding images in the datagridview

Christian Graus31-May-07 20:38

Detect size of error log and start a new one

31-May-07 20:38

OK, then you're really lost. It seems like every day you're working on something else, does this stuff all actually coexist in a project somewhere ?

The cell needs to contain a control which shows an image, such as a picturebox. There are articles on CP from people who would know more about this than me, but my first port of call would be to add a picture box to the cells controls collection, and put my image in that.

Psycho-^*Coder*-Extreme31-May-07 16:35

Psycho-^*Coder*-Extreme

31-May-07 16:35

In an application I'm working on I've written my own custom error log class which logs errors with the required information. What I'm wanting to do is limit the file to a certain size (yet to be determined), once it reaches that set size I want to start a new file (eg ErrorLog1.txt, ErrorLog2.txt, etc). I've done some research into this and just havent found much to help. Anyone got any ideas?

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Re: Detect size of error log and start a new one

Johan Hakkesteegt1-Jun-07 0:54

Johan Hakkesteegt

1-Jun-07 0:54

Hi,

It sounds like a reasonably easy process, and I am guessing that you were merely trying to put elegance before effectiveness when you researched the idea.
As you are talking about an error log, we may assume that you will not be writing data to the log in a continuous stream, but only then when an error occurs. (If errors occur continuously, you might want to think about changing your app so it doesn't create so many errors)
So write your code along these steps:

1. an error occurs
2. check whether the file ErrorLog1.txt exists
3. If it exists, check its size. (size can be hard coded, or you can allow the user to set the size.)
- if the size has reached the determined point, create a new file:
- check the number at the end of the existing file
- that number += 1
- concatenate the name and the new number to form the new ErrorLog file (ErrorLog2.txt)
- write the error to the new file.
4. If the size has not reached the determined point yet, write the error to the file
5. go to step 1

You can build in a margin if you want the files to specifically remain under the determined size.

Good luck,

Johan

My advice is free, and you may get what you paid for.

Re: Detect size of error log and start a new one

Psycho-^*Coder*-Extreme1-Jun-07 2:08

Psycho-^*Coder*-Extreme

1-Jun-07 2:08

John,

Thanks for the info, and yes I was looking for elegance over effectiveness. Maybe I was over-tired, hell I don't know, but somehow I overlooked the .FileSize attribute of the FileInfo class (guess when looking too hard for something you overlook the obvious).

This application does not continually write to the file, in fact through the last 5 months of development and monthly releases my file size is just a tad bit over 100k, but what I don't want is 5 years from now (or even longer) to have to sort through a 3 GB file (thought I am currently working on an Admin screen when I can load the text file contents into something like a DataGridView, ListView, or maybe my own created custom control so we don't always have to open the text file and read it).

The file size will in fact be hard coded in the application (I don't feel comfortable letting non-computer savvy people pick the file size.
Once again, thanks for the input and ideas.

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Re: Detect size of error log and start a new one

Johan Hakkesteegt1-Jun-07 3:41

Johan Hakkesteegt

1-Jun-07 3:41

Hi,

Feel free to use this bit of code to dump the contents of your log file into a listbox. (no guarantees, no warranty)

<br />
Private Sub CmdLoad_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CmdLoad.Click<br />
If File.Exists("log.txt") = False Then File.Create("log.txt")<br />
Dim sr As StreamReader = New StreamReader("log.txt")<br />
Dim line As String<br />
LineCounter = 0<br />
Do<br />
line = sr.ReadLine()<br />
ListBox.Items.Add(line)<br />
Loop Until line Is Nothing<br />
sr.Close()<br />
End Sub<br />

and this bit to empty out only the selected items:

<br />
Private Sub CmdClearLog_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CmdClearLog.Click<br />
Dim ic As Integer<br />
Try<br />
ic = LB_Errors.SelectedItems.Count<br />
Do<br />
LB_Errors.Items.Remove(LB_Errors.SelectedItems.Item(ic - 1))<br />
ic -= 1<br />
Loop Until ic = 0<br />
Catch Ex As Exception<br />
MsgBox(Ex.Message)<br />
End Try<br />
End Sub<br />

As for "Where's the any key?"-users, you could catch that risk by hard coding a top and a bottom limit, for example with a trackbar.

Hope it helps,

Johan

My advice is free, and you may get what you paid for.

Regarding Text to speech in Hindi

jatin288231-May-07 16:01

31-May-07 16:01

I have a project to do titled
"TEXT TO SPEECH IN HINDI"

so could anyone pls guide me as to how should i start for that
pls help me out in following the right steps to start working on that

Thanks
Jatin

Sathesh Sakthivel31-May-07 16:07

Sathesh Sakthivel

31-May-07 16:07

Hey we could not able to Understand what you say.

Please be specific while you are posting the question?

Regards,

Satips.

jatin288231-May-07 17:43

31-May-07 17:43

I mean to say how should i start doing this thing
some tutorial to follow
I want to start from scratch
so guide me through the steps to be followed

Sathesh Sakthivel31-May-07 18:01

Sathesh Sakthivel

31-May-07 18:01

You have replied to CG that you have an Idea. What Idea do you have reg this.

Let me know it in detail.

Regards,

Satips.

Christian Graus31-May-07 16:27

31-May-07 16:27

Get a microphone, and record yourself saying every Hindi word.

Seriously, why have you taken a project if you have no idea how to do it ?

jatin288231-May-07 17:41

31-May-07 17:41

i have an idea how to do it
but i just wanted to know more details about it
i mean to say let me know abt some tutorial where i can read through it

Christian Graus31-May-07 18:17

31-May-07 18:17

I can't imagine there are any web tutorials on how to do this from scratch. What's your idea ?

jatin288231-May-07 18:50

31-May-07 18:50

i have used microsoft speech library for
text to speech
but that is in built feature
now i have to it in hindi

i mean it should now speak in hindi
how will i do it

Christian Graus31-May-07 20:07

31-May-07 20:07

OK, so you don't have any ideas ?

You'd have to write a new speech library, one that speaks Hindi. If the MS library doesn't support Hindi, that's about your only option.

jatin28821-Jun-07 4:50

1-Jun-07 4:50

if you dont mind can you tell me how to write new speech library
I have just used the in built in microsoft speech library
but never created a new one

so i hope you could tell me about that

Thanks

jatin28826-Jun-07 9:36

6-Jun-07 9:36

can you tell me how do we write a new speech library
i dont know how to do that
i have just used the ones that are provided

it would be so nice of you
give me any kind of information (any article,tutorial etc ) about how to create new speech library

thanks a lot
Jatin

Highlight Textbox Text

Duane in Japan31-May-07 13:28

Duane in Japan

31-May-07 13:28

If a mistake is made, a MsgBox pops up and prompts the user to insert a number instead of text. The cursor is then waiting at the end of the string and I have to backspace, then re-enter the number. I would like to already have the string completely highlighted for instant replacement without backspacing please.

Thanks in advance,
Duane in Japan

If TextBox5.Text.Length = 0 Then
'http://msdn2.microsoft.com/en-us/library/139z2azd.aspx, MsgBox
MsgBox("A 'B1' value is required.", MsgBoxStyle.Exclamation)
e.Cancel = True
ElseIf Not IsNumeric(TextBox5.Text) Then
MsgBox("This 'B1' value is not numeric.", MsgBoxStyle.Exclamation)
e.Cancel = True

Dave Kreskowiak31-May-07 13:46

Dave Kreskowiak

31-May-07 13:46

TextBox1.SelectAll()

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

Christian Graus31-May-07 13:52

31-May-07 13:52

Don't you mean TextBox5.SelectAll() :P

I didn't realise that was there, I just knew there were selection properties.

Duane in Japan31-May-07 14:09

Duane in Japan

31-May-07 14:09

Thanks Dave et al,

Just had to figure out where to put it, Right under the Dim statements prior to the error handler MsgBox events. Now just paste it in my project 9 more times.

Duane in Japan

Christian Graus31-May-07 13:50

31-May-07 13:50

Is this VB6 or VB.NET ?

Duane in Japan wrote:
TextBox5

Why no proper variable names ?

You can set the selectionstart and selectionlength properties, from memory on a textbox. There are certainly properties on the control to select what text is highlighted.