C# Discussion Boards - CodeProject

Re: How to : Get the variable name in runtime ?

15-Jul-09 2:33

some of these link[^]s may help

Life goes very fast. Tomorrow, today is already yesterday.

Eddy Vluggen15-Jul-09 2:46

Eddy Vluggen

15-Jul-09 2:46

bonzaiholding wrote:
Is there a way to get the variable name in runtime ?

AFAIK, not for local variables. You can use reflection to check what a class exposes, but you cannot see the names of locals.

Re: How to : Get the variable name in runtime ?

Luc Pattyn15-Jul-09 2:50

How to Get AutoGenerate Code with Strings and Numbers in C#

15-Jul-09 2:50

I agree.

You can see the method parameters though, which basically are locals; they probably included those for supporting interface documentation.

Smile | :)

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ChandrakanthGaddam15-Jul-09 2:12

ChandrakanthGaddam

15-Jul-09 2:12

Hi,

This is from CHandra

My Questions in How can i get AutoGenerate alpha numerics with combination of strings and Numbers.

Can any give me some suggestion on or any code is there in C# please send me

Thanks and Regards
Chandrakanth

Re: How to Get AutoGenerate Code with Strings and Numbers in C#

dan!sh 15-Jul-09 2:17

dan!sh

15-Jul-09 2:17

Guid.NewGuid().ToString("N");

Re: How to Get AutoGenerate Code with Strings and Numbers in C# [modified]

musefan15-Jul-09 2:17

Re: How to Get AutoGenerate Code with Strings and Numbers in C#

15-Jul-09 2:17

How about...

string GetRandomString(int length)//length of random string
{
   System.Text.StringBuilder sb = new System.Text.StringBuilder(length);
   Random rnd = new Random();
   for(int i = 0; i < length; i++)
   {
      sb.Append((char)rnd.Next(33, 127));
   }
   return sb.ToString();
}

Life goes very fast. Tomorrow, today is already yesterday.

modified on Wednesday, July 15, 2009 9:08 AM

Luc Pattyn15-Jul-09 2:51

15-Jul-09 2:51

musefan wrote:
System.Text.StringBuilder sb = new System.Text.StringBuilder(length);

ftfy.
I improved the performance a bit.

Smile | :)

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hi..

mjawadkhatri15-Jul-09 1:52

mjawadkhatri

15-Jul-09 1:52

Hi.
this is my coding

string MyString;
MyString = "Select * from timemgmt";
if (radioin.Checked == true)
{
cn = new OdbcConnection("Driver={Microsoft ODBC for Oracle};Server=orcl;UID=it;PWD=cr;");

cmd = new OdbcCommand(MyString, cn);
cn.Open();
cmd.CommandText = "insert into timemgmt values('" + textBox1.Text + "','" + label19.Text + "','" + label18.Text + "','" + label18.Text + "')";
cmd.ExecuteNonQuery();
cn.Close();

textbox1.text = employe ID
label19.text = System Date
label18.text = System Time

i want to do Accept employee ID in one time in a day 2nd time user give same Id in a same date not accepted
plzz give me some hints

thanks in Advance

Jawad Khatri

Tom Deketelaere15-Jul-09 1:55

15-Jul-09 1:55

0) 'hi' = bad subject
1)

mjawadkhatri wrote:
cmd.CommandText = "insert into timemgmt values('" + textBox1.Text + "','" + label19.Text + "','" + label18.Text + "','" + label18.Text + "')";

Use parameters (odbcparameter). (read up on sql-injunctions)

2) use the 'code block' tags to post code

3) Your question: One way to do it would be to do a select from the user + date first. If the select returns 0 rows --> insert else --> don't insert

Luc Pattyn15-Jul-09 2:05

15-Jul-09 2:05

I can't think of any more hints, those are the ones I would have given also. Big Grin | :-D

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musefan15-Jul-09 2:09

15-Jul-09 2:09

You could try recommending a book, not the one that book stores want you to buy thou Big Grin | :-D

Life goes very fast. Tomorrow, today is already yesterday.

Luc Pattyn15-Jul-09 2:14

15-Jul-09 2:14

Nah. I only do that when a very basic question is getting asked; anyway, feel free to visit a decent book store, I could recommend the Stanford University Bookstore on the Palo Alto campus, it is quite impressive (I think it looks like an Amazon warehouse).

FYI: I added a book thread[^] on my personal CP blog for your convenience.

Smile | :)

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musefan15-Jul-09 2:22

15-Jul-09 2:22

That's a bit far for me, but thanks none the less. I went to a book store the other day and could not even find a computer section! I'll try a different one next time...

Some good advise in your thread Smile | :)

Life goes very fast. Tomorrow, today is already yesterday.

Luc Pattyn15-Jul-09 2:25

15-Jul-09 2:25

musefan wrote:
That's a bit far for me

Same here, but I do visit it on every opportunity, which is once in ten years or so.

Smile | :)

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musefan15-Jul-09 2:31

15-Jul-09 2:31

Well I shall keep it in mind if I am ever in the area Smile | :)

Life goes very fast. Tomorrow, today is already yesterday.

Tom Deketelaere15-Jul-09 2:32

15-Jul-09 2:32

Well for once I was first Poke tongue | ;-P

Christian Graus15-Jul-09 2:48

Christian Graus

15-Jul-09 2:48

I love when they post code that is a disaster, we try to help, and they never answer anyone who replies.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Tom Deketelaere15-Jul-09 2:53

15-Jul-09 2:53

Christian Graus wrote:
we try to help, and they never answer anyone who replies.

I know

I think in all the answers I gave to questions (which is compared to you almost nothing but hey I try Poke tongue | ;-P

) I might have gotten an answer back like twice or so.

Luc Pattyn15-Jul-09 2:53

15-Jul-09 2:53

Smart people walk away from disasters, for some reason we feel attracted to them?? Big Grin | :-D

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Tom Deketelaere15-Jul-09 3:04