Re: I want to enter only Negative values,Positive values,Decimal values in TextBox - C# Discussion Boards

Re: I want to enter only Negative values,Positive values,Decimal values in TextBox

14-Nov-07 0:01

Hi friends,

I am using C# in windows based application and i am using one text box in which i want to validate the text box when user enters any Positive Values(+),Negative Values(-) and Decimal Values(.)(only Numeric Values).Can any one send me the code for validating the text box in windows based application using C#.

hemanth@919866357142

Christian Graus14-Nov-07 0:12

Christian Graus

14-Nov-07 0:12

There's at least one article on this site that does that, there's also the maskedtextbox if you prefer. You just handle the keypress event, and set it's handled property to reject keys you don't want. Don't forget to check for Char.IsControl.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Re: I want to enter only Negative values,Positive values,Decimal values in TextBox

Xmen Real 14-Nov-07 0:26

Xmen Real

14-Nov-07 0:26

Why dont you use "NumericUpDown" control, its what, you want from a textbox

Becoming Programmer...

Re: I want to enter only Negative values,Positive values,Decimal values in TextBox

g_hemanth1714-Nov-07 0:49

Re: I want to enter only Negative values,Positive values,Decimal values in TextBox

14-Nov-07 0:49

Thanks xmen_xwk for your message..but i cannot use NumericUpDown Control here because i want to enter any value in the text box(negative,Positive,Decimal Values from 1 to.... so i cannot specify all these numbers in the NumericUpDown control)..

hemanth

Sri_346414-Nov-07 0:54

Re: I want to enter only Negative values,Positive values,Decimal values in TextBox

14-Nov-07 0:54

Use the code below.
Pass the textbox.Text to this method from the validating or validated or leave event of the textbox

public bool IsNumeric(object expression)
{
double retNum;
return Double.TryParse(Convert.ToString(expression), System.Globalization.NumberStyles.Integer,System.Globalization.NumberFormatInfo.InvariantInfo,out retNum );
}

Thanks,
Srikanth

g_hemanth1714-Nov-07 1:19

Re: I want to enter only Negative values,Positive values,Decimal values in TextBox

14-Nov-07 1:19

Thanks Srikanth for your code.i tryed it but i didn't get the correct result from your code.can u send me the project file which you did to my mail id .I will check it out..my mail id is g.hemanth17@gmail.com

Thanks,Hemanth

Xmen Real 14-Nov-07 1:38

Xmen Real

14-Nov-07 1:38

buddy you can also write any value in NumericUpDown

Becoming Programmer...

Re: I want to enter only Negative values,Positive values,Decimal values in TextBox

shaz jazz14-Nov-07 2:35

shaz jazz

14-Nov-07 2:35

hi!

i have used this chunk of code for taking only positive decimal and interger values, it worked successfully for me. you can modify it according to your need. it is basically keypress event of textbox...

private void onKeyPress(object sender, KeyPressEventArgs e)
{
char[] myNum = new char[12] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '\b','.' };
bool blnNumFnd = false; //for keeping track of decimal
foreach (char c in myNum)
{
if (e.KeyChar == myNum[11])
{
String txt = ((TextBox)sender).Text;
if (!txt.Contains("."))
{
blnNumFnd = true; //means its decimal value and user can't enter another decimal again!
break;
}
}
else if (e.KeyChar == c)
{
blnNumFnd = true;
break;
}
}
if (!blnNumFnd)
e.KeyChar = '\0';
}

hope it will work for you!

Regards,
shazjazz

Re: I want to enter only Negative values,Positive values,Decimal values in TextBox

g_hemanth1714-Nov-07 3:36

Re: I want to enter only Negative values,Positive values,Decimal values in TextBox

14-Nov-07 3:36

Thank you shazjazz..its helped me out...

<marquee>

hemanth

g_hemanth1714-Nov-07 5:20

Re: Gridview Header column

14-Nov-07 5:20

Hi Shanjazz can u send me the code for entering Positive values and negative values also..i tryed by changing the code but i didn't get the result correctly.I am waiting for your code for entering Negetive,Positive,Decimal values in textbox

hemanth

Gridview Header column

kishoregani13-Nov-07 23:59

kishoregani

13-Nov-07 23:59

I created a grid which shows categories. I want to add paging to grid showing only 10 categories for each page.
According to requirement, first categoryid column of grid must be invisible. And want to replace y with yes. To achieve this I have written code as below

protected void gdViewCategory_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.DataItem != null)
{
e.Row.Cells[1].Visible = false;
if (e.Row.Cells[4].Text == "y")
e.Row.Cells[4].Text = "Yes";
if (e.Row.Cells[4].Text == "n")
e.Row.Cells[4].Text = "No";
}
}

And to add paging I have written code as below:

protected void gdViewCategory_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
gdViewCategory.PageIndex = e.NewPageIndex;
BindData();
}

It displays required result, but the header of gridview shows all column names.
And therefore row data is not under right columns.

KennyPatel14-Nov-07 1:34

KennyPatel

14-Nov-07 1:34

Hi,

Have you Un-check Auto Genrate Fields Option.
Tri if it shaws all the Columns after customizing.......

Smile | :)

Thanks

Need to use Microsoft.Office.Interop namespace

Sri_346413-Nov-07 23:51

13-Nov-07 23:51

i need to use the namespace Microsoft.Office.Interop.Outlook.

For that when i searched in google regarding which dll to be referred i came to know that when Microsoft Outlook 11.0 object library dll is referred,

two dll(Microsoft.Office.Interop.Outlook and Office.Core) will automatically get refernced.

When i tried both dll are getting automattically added to the project but still i couldnt use Microsoft.Office.Interop.

Please help me out.

Thanks,
Srikanth

Christian Graus14-Nov-07 0:13

Christian Graus

14-Nov-07 0:13

Is google blocked in some countries ?

What you want are called the primary interop assemblies.

http://www.google.com.au/search?sourceid=navclient&ie=UTF-8&rlz=1T4ADBS_enAU225AU226&q=Microsoft%2eOffice%2eInterop%2eOutlook++download[^]

Sri_346414-Nov-07 0:48

14-Nov-07 0:48

Aiyo!! i have the ssembly. Infact i have added the reference in my project.
Microsoft oulook 11.0 object library.dll which inturn refer MicroSoft.Office.Core and Microsoft.Office.Interop.Outlook assemblies.

But i couldnt use the namespace Microsoft.Office.Interop.Outlook namespace in my code.

And for your information google is available in India and we know how to get the stuff from google.

Thanks for your reply.

Thanks,
Srikanth

Vasudevan Deepak Kumar14-Nov-07 1:09

Vasudevan Deepak Kumar

14-Nov-07 1:09

Christian Graus wrote:
Is google blocked in some countries ?

No. But some people have a block in thier brain (mental block) which causes them to shirk doing homework and put dumb questions in our discussion boards. How many times we have to remind them to read ForumGuidelines before posting.

Did you observe Survey forums on Monday? There were hilarious code questions there!

Vasudevan Deepak Kumar
Personal Homepage
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Regional Weblog (in Tamil) :: Voicing for the Society

Yesterday is a canceled check. Tomorrow is a promissory note. Today is the ready cash. USE IT.

Sri_346414-Nov-07 1:28