Re: how to restrict the ClickEvent of a Button - C# Discussion Boards

Tauseef A25-Mar-07 2:01

25-Mar-07 2:01

Hi guys

i have a custom type object named Person, in my data access layer i fill this object from data adapter and send this object to my presentation layer where there is a datagrid view to display the contents of this object, but i want to make updations based on delete, update and add new actions performed on this object from data grid view , if i am using dataset so i can do that from data adapters update method passig it the changed rows of the data set, but i am not using any data set , so what is most appropriate approach to do that ?
thanks in advance

hello

Re: custom object update issue

Christian Graus25-Mar-07 3:05

Christian Graus

25-Mar-07 3:05

You should be calling methods on your Person class, which then call methods in your data layer to insert, update or delete your data.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: custom object update issue

Tauseef A25-Mar-07 5:39

Tauseef A

25-Mar-07 5:39

but the problem is that how i will get the updated rows from datagrid view ,,

than to send these new updated rows to my business layer to perform action ,

hello

Using Word document

Amr M. K.25-Mar-07 0:13

Amr M. K.

25-Mar-07 0:13

hello
am using C#.NET 2005
I want to save word document to Html file
I used :-
using Word = Microsoft.Office.Interop.Word;
using System.Reflection;
...
bject oMissing = System.Reflection.Missing.Value;
object oEndOfDoc = "\\endofdoc"; /* \endofdoc is a predefined bookmark */

//Start Word and create a new document.
Word._Application oWord;
Word._Document oDoc;
oWord = new Word.Application();
oWord.Visible = true;
oDoc = oWord.Documents.Add(ref oMissing, ref oMissing,
ref oMissing, ref oMissing);

object fileName = "d:\\Try.doc";
object falseValue = false;
object trueValue = true;
object missing = Type.Missing;

oWord.Activate();
oDoc = oWord.Documents.Open(ref fileName, ref missing, ref trueValue, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing);

but it dosent work ???
anyboday know how to do that

AMR-CIS

Re: Using Word document

kubben25-Mar-07 2:10

kubben

25-Mar-07 2:10

I wrote and article on this. The article is about converting txt to rtf. Still getting it to html is the same thing.
Here is the link:
http://www.codeproject.com/cs/files/rtftotxtconvertor.asp[^]

Hope that helps.
Ben

how to restrict the ClickEvent of a Button

pashitech24-Mar-07 22:50

pashitech

24-Mar-07 22:50

hi all,
please tell me how to restrict the ButtonClick event for the second time..
here my requirement is FOR THE FIRST TIME I SHOULD ALLOW THE BUTTON_CLICK EVENT FUNCTIONALITY and from the SecondTIme onwords i neeed to restrict the the functionality by poping a message.
hope u got my question,
bye byes thnx in advance,

Prashanth

Re: how to restrict the ClickEvent of a Button

The ANZAC24-Mar-07 23:24

The ANZAC

24-Mar-07 23:24

Have a global integer available to all events set as 0.

In Class:
int x = 0;

In Button Click Event:

if (x == 0)<br />
{<br />
x += 1;<br />
//Do your events<br />
}<br />
else<br />
{<br />
return;<br />
}

Posted by The ANZAC

Re: how to restrict the ClickEvent of a Button

CPallini24-Mar-07 23:55

CPallini

24-Mar-07 23:55

Use a flag (as member variable of your form). On Form initialization set the flag (say alreadyClicked) to false. Then in the button click event handler, first check the flag, if it is false set it to true and, finally, do whatever is needed in the handler (on the other hand, if it is true simply return).

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: how to restrict the ClickEvent of a Button

Rocky#25-Mar-07 0:56

Rocky#

25-Mar-07 0:56

well if u want to restrict the functionality then why dont u disable the button rather than popping a message and then restricting its function

you can do it by adding this to the click event

button1.Enabled = false;

but you'll need to have some mechanism to enable it again once its disabled. if this is in your req. offcourse

Rocky

Get number of objects that have been serialized

Saikek24-Mar-07 22:11

Saikek

24-Mar-07 22:11

Hello!
Can anyone tell me how to get the number of objects that are located in serialized file (Soap method).
I need it, because i cant create array before i know the number of elements.

One nation - underground

Date picker Problem

DipakBNET24-Mar-07 21:41

DipakBNET

24-Mar-07 21:41

When I use date picker for page which having Master page reference, it is giving javascript error that "'window.opener.document.From1.txtEventDate' is not an object".
But same code is working fine when using without Master page reference.

Please help me.

Dipak

Re: Date picker Problem

Abolfazl Sheikhloo25-Mar-07 21:02

Abolfazl Sheikhloo

25-Mar-07 21:02

if you have a popup window, your code must work successfully

We Can Do Anything, If We Want It

Problems changing selection in TextBox derived control

Corey McKenzie24-Mar-07 21:28

Corey McKenzie

24-Mar-07 21:28

I'm working on a TextBox control that allows fields (like MS Office's mail merge feature). I want the editor to treat the field as though it was a single character. The user shouldn't be able to delete part of the field or select only part of the field.

For example, a line might look like: «Image» shot on «Date» at «Resolution»
where «Image» «Date» «Resolution» are all fields.
(above ? in a diamond are actually the same double angle brackets MS uses in Word).

My control inherits from TextBox. I've overloaded OnKeyDown & OnKeyPress so that if the user backspaces it deletes the whole field. If they move left or right, it skips past the entire field. I've also overloaded OnMouseUp so if they select part of the field with the mouse, it increases the selection to select all of the field. This all seems to work.

My problem is if the user holds shift and left, I can't get the field selected and put the cursor to the left of the selection. Similarly if they select by dragging the mouse right to left, the cursor is on the right side.

A snippet of the OnMouseUp code follows:

int SelectionEnd = SelectionLength + SelectionStart;
for (int i = SelectionStart; i >= 0; i--)
{
    if (Text[i] == FieldEnd)
        // Found an end tag. SelectionStart isn't in a field.
        break;
    if (Text[i] == FieldStart)
    {
        // Found the start tag. Modify selection.
        Select(i, SelectionEnd - i);

    }
}

I assume I can't do what I want with just Select(start,len) or SelectionStart and SelectionLength. Any help will be much appreciated!

Re: Problems changing selection in TextBox derived control

Abisodun25-Mar-07 4:26

Abisodun

25-Mar-07 4:26

If you're trying to select right to left the following should work:

textBox.Select(selectionStart + selectionLength, -selectionLegnth);

You'll need to determine whether the user was going right to left using combinations of KeyDown, KeyUp (examine selectionLength) and MouseDown, MouseUp (examine cursor position).

Good Luck.

Re: Problems changing selection in TextBox derived control

Corey McKenzie25-Mar-07 5:25

Corey McKenzie

25-Mar-07 5:25

Thanks for the suggestion, but it still leaves the cursor at the right of the selection.

Re: Problems changing selection in TextBox derived control

Abisodun25-Mar-07 5:41

Abisodun

25-Mar-07 5:41

Sorry, What's the base class your TextBox control inherits from?

Re: Problems changing selection in TextBox derived control

Abisodun25-Mar-07 6:08

Abisodun

25-Mar-07 6:08

You're right. The suggestion works for a class derived from RichTextBox not from System.Windows.Forms.TextBox.

Help required for Videoocx

Ghoditsttoawn24-Mar-07 21:22

Ghoditsttoawn

24-Mar-07 21:22

Greetings ...

Can anybody please tell me about any tutorial etc on video.ocx?

Trying to make sense of it all !!!

Re: Help required for Videoocx

Christian Graus25-Mar-07 3:06

Christian Graus

25-Mar-07 3:06

What is video.ocx ? If you want to play videos in your app, import the windows media player control.

Re: Help required for Videoocx

Ghoditsttoawn31-Mar-07 20:27

Ghoditsttoawn

31-Mar-07 20:27

I experimented with windows media player control. For playing videos from files its really easy to use. but my problem is that i want to play a live video coming from a remote machine on the LAN. I'm using UDP for the streaming of video from the remote machine.

So duing my search I reached the conclusion that DirectShow is the thing for me. So if you have used Directshow, can u tell me how i can pick a live stream and use it to show video?

byte array - how to remove one item

yarns24-Mar-07 20:05

yarns

24-Mar-07 20:05

Hello

i have some byte array and want to remove from it one first byte...
Is any simpler way than for loop?

Greetings

Re: byte array - how to remove one item

Leslie Sanford24-Mar-07 21:17

Leslie Sanford

24-Mar-07 21:17

yarns wrote:
i have some byte array and want to remove from it one first byte...
Is any simpler way than for loop?

You can't remove items from an array. You may want to use a something like a List object that lets you add and remove items. Maybe you can give us more detail on what you're doing.

Re: byte array - how to remove one item

yarns24-Mar-07 21:21

yarns

24-Mar-07 21:21

Thank but i already got it.

I'm using Array.Copy

Greetings

Re: byte array - how to remove one item

Baxtiyor7-Nov-10 22:39

Baxtiyor

7-Nov-10 22:39

private static byte[] RemoveFrom(byte[] source, int startpos, int length)
{
byte[] oldi = new byte[startpos];
byte[] orqa = new byte[source.Length-(startpos+length)];

Array.Copy(source, 0, oldi, 0, startpos);
Array.Copy(source, startpos + length, orqa, 0, source.Length - (startpos + length));
byte[] res = oldi.Concat(orqa).ToArray();
return res;
}

i'm student beginner c#

implementation with c#

pariisa24-Mar-07 13:00

pariisa

24-Mar-07 13:00

hi
I want to implementatin adaptive resonance theory network with C#
help me please

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