Re: Validate Textbox only to accept numeric - C# Discussion Boards

Ed.Poore24-Jan-07 0:48

Ed.Poore

24-Jan-07 0:48

You can override the OnKeyPress or OnValidating methods of the TextBox, if overriding the KeyPress then simply filter out the keystrokes which are not numeric. If overriding the OnValidating method then you can use int.TryParse to check to see if it's a valid integer.

There are numerous articles on the web about how to do this, the best solution in my opinion would be to override the OnKeyPress event.

I have no idea what I just said but my intentions were sincere.

Poore Design

quiteSmart24-Jan-07 1:02

24-Jan-07 1:02

That will work if the user didn't use the paste feature

Ed.Poore24-Jan-07 2:20

Ed.Poore

24-Jan-07 2:20

Hadn't thought of that D'Oh! | :doh:

, suppose it'll have to be either the OnValidating or OnTextChanged.

I have no idea what I just said but my intentions were sincere.

Poore Design

Martin#24-Jan-07 1:02

Martin#

24-Jan-07 1:02

Hello,

Look at this articles here on CP

http://www.codeproject.com/info/search.asp?cats=3&searchkw=TextBox+Numeric&Submit1=Search&author=&sd=15+Nov+1999&ed=24+Jan+2007[^]

All the best,

Martin

David Domingues24-Jan-07 1:27

David Domingues

24-Jan-07 1:27

to complete with a bit of code, what has been already so nicely said:

void TxtRegisteringKeyKeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
  char[] myNum = new char[11] { '0' , '1', '2', '3', '4', '5', '6', '7', '8', '9', '\b' };
  bool blnNumFnd = false;
  foreach (char c in myNum)
  {
     if (e.KeyChar == c)
        blnNumFnd = true;	
  } 
  if (!blnNumFnd)
      e.KeyChar = '\0';
}

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engsrini24-Jan-07 3:39

engsrini

24-Jan-07 3:39

Use MaskedTextBox Instead of Normal textbox, where you can restrict user entries

regular expression

shweta.shrivastava24-Jan-07 0:31

shweta.shrivastava

24-Jan-07 0:31

Hi,

I am having Text file that contains japanese characters ,I need to look out for Hiragana, Katakana and

ideograph characters searching through Microsoft and google i found that i can do it through Regular

Expressions
http://msdn2.microsoft.com/en-us/library/aa293063(VS.71).aspx[^]

I used Hiragana and Katakana regex like this string regexPattern = @"\p{IsHiragana}|\p{IsKatakana}"; its

working fine but for Ideograph I used \p{Lo} but this doesn't work

Any Help will be highly appreciated

Thanks and regards
Shweta Shrivastava

NETtoCOM

MozhdehQeraati24-Jan-07 0:15

MozhdehQeraati

24-Jan-07 0:15

Hi
I am a computer engineer and I have developed some DLLs in .NET Framework 1.1 (C#.NET). Now I want to develop a new project in Visual C++ 6.0 and I need to use those DLLs in Visual C++. Would you please help me with this interoperability? I need a good and of course abstract resource in order to become familiar with these concepts and with the method I have to use for this transfer.
Thanks in advance

Re: NETtoCOM

Ed.Poore24-Jan-07 0:50

Ed.Poore

24-Jan-07 0:50

Tried Google[^]?
Surprise surprise where the first result it returned from... Roll eyes | :rolleyes:

I have no idea what I just said but my intentions were sincere.

Poore Design

menu strip.......

quiteSmart23-Jan-07 23:53

23-Jan-07 23:53

hi,

In my windows application i added a menu strip item. The default color of the menu strip is the colors of the windows xp (blue and white).

When i change the backgroung color property to the color i want it is changed.

but when i click on an item for example File the menu that pops down under it has the color of the original menu strip (blue and white). I need it to be as the color i set. I couldn't find any property for that.

Is there a way to do it?

GunaChinna24-Jan-07 0:36

GunaChinna

24-Jan-07 0:36

This code works for me.

MenuStrip mainmenu;
ToolStripMenuItem File;
ToolStripMenuItem News;
ToolStripMenuItem Exit;

mainmenu = new MenuStrip();
File = new ToolStripMenuItem();
News = new ToolStripMenuItem();
Exit = new ToolStripMenuItem();

mainmenu.BackColor = Color.Red;
mainmenu.ForeColor = Color.Yellow;

File.BackColor = Color.Violet;
File.ForeColor = Color.Cyan;

News.BackColor = Color.DarkBlue;
News.ForeColor = Color.DarkGreen;

Exit.BackColor = Color.DarkViolet;
Exit.ForeColor = Color.DeepPink;

File.Text = "File";
News.Text = "News";
Exit.Text = "Exit";

File.DropDownItems.Add(News);
File.DropDownItems.Add(Exit);

mainmenu.Items.Add(File);

this.Controls.Add(mainmenu);

quiteSmart24-Jan-07 0:43

24-Jan-07 0:43

i will try that,

thanks

quiteSmart24-Jan-07 1:42

24-Jan-07 1:42

hi,

it is not working completly

it works fine until i click of one of the main items (File menu item).

then this item changes back to the original colors, but the items under it doesn't change, They keep the color i gave to them.

do you know how to solve this

samtam24-Jan-07 1:15

samtam

24-Jan-07 1:15

I myself was having same problem while selecting a treenode. that if i set its backgrout color or foreground color then its fine and it works but i want that when ever i select the node then the default windows color apear(blue,olive or grey) and i want a different color to apear so how to do so??
its same problem i guess only control is different Smile | :)

i will try sugestion of menu strip as well!

thax in advance!

sam tam

quiteSmart24-Jan-07 1:52

Remove Fixed Column from dataGridview1

24-Jan-07 1:52

Yea this is happening with me too. if you find any solution for it, please give me a note.
Good luck

M Riaz Bashir23-Jan-07 23:30

M Riaz Bashir

23-Jan-07 23:30

Hi All

how to remove fixed column from datagridview1?

thank you

how to manage onmouseup event on IHTLDocument2?

lulaleila23-Jan-07 22:53

lulaleila

23-Jan-07 22:53

Hi,

what's wrong in this code?
********************************************************
IHTMLDocument2 doc=(IHTMLDocument2)Explorer.Document;

doc.onmouseup+=new MouseEventHandler(MouseUp);

public void MouseUp(object sender, MouseEventArgs e)
{
MessageBox.Show("mouseUp");

}
******************************************************
The error discovered was:
Impossible to apply the operator '+=' to operands of type 'object' and 'System.Windows.Forms.MouseEventHandler'.
*****************************************************

Please something helping me ? D'Oh! | :doh:

Thanks in advance
Lula

Passing parameter to Property.

M LN Rao23-Jan-07 22:44

M LN Rao

23-Jan-07 22:44

Hi everyone,

I want to know how to pass a parameter to a property in C#. I know how to do this VB.NET but not in C#.

In Vb.NET it looks:

Public Readonly Property Person(ByVal Id) as Employee
{
Get{
Return empObj(Id)
}
}

Intelligence is measured by common sense not by how many scholarly books you read.

jdkulkarni23-Jan-07 23:00

jdkulkarni

23-Jan-07 23:00

private string myName;
public string GetName
{
  get
  {
    return this.myName;
  }
  set
  {
    this.myName = value;
  }
}

Jayant D. Kulkarni
Brainbench Certified Software Engineer in C#, ASP.NET, .NET Framework and ADO.NET

Martin#23-Jan-07 23:18

Martin#

23-Jan-07 23:18

Hello,

I think it's not possible in C#.

What you whant is possible with a method.

public Employee GetPerson(int Id)
{
    return empObj(Id);
}

All the best,

Martin

Colin Angus Mackay23-Jan-07 23:30

Colin Angus Mackay

23-Jan-07 23:30

It looks a bit like an indexer property:

public Employee this[int id]
{
    get
    {
        return this.personArray[id];
    }
}

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