ASP.NET Discussion Boards

I upload a site but it display an error "Object reference not set to an instance of an object"

Deepthy.P.M30-Nov-07 23:23

Deepthy.P.M

30-Nov-07 23:23

I upload a site but it display an error "Object reference not set to an instance of an object".In my class
it display an error in these lines
Dim st As String = ConfigurationSettings.AppSettings("str")
Line 9: Public con As New MySqlConnection(st)
How can i solve this problem.I am using mysql dataconnection.

Re: I upload a site but it display an error "Object reference not set to an instance of an object"

Christian Graus30-Nov-07 23:46

Christian Graus

30-Nov-07 23:46

I'd guess that your problem is that the config file is not set up properly, and your code doesn't check for nulls.

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 )

How to find Date differences(dd/mm/yyyy)?

irkahc30-Nov-07 22:35

irkahc

30-Nov-07 22:35

Hi all,
there are two textboxes in my page. FromDate and ToDate. dates are selected from popup calender and displayed in respective textboxes. when I click on a button, have to satisfy the following conditions.It is working with MM/dd/yyyy format.. but when I change the format to dd/mm/yyyy getting error..

1. Difference between FromDate and ToDate sholud not greater than 31.
2. FromDate should be less than ToDate.
3. ToDate is not greater than current date.

below is the code I had written: This code is working fine with MM/dd/yyyy date format.. but when I give the date in dd/mm/yyyy getting error.

TimeSpan tsDaysDifference = Convert.ToDateTime(txtToDate.Text).Subtract(Convert.ToDateTime(txtFromDate.Text));
if (tsDaysDifference.Days > ConInterfaceManagerCommon.DATE_RANGE)
{
StringBuilder strbldrErrorScript = new StringBuilder("");
strbldrErrorScript.Append("alert('Difference between from and to dates should not morethan 31')");
strbldrErrorScript.Append("");
ClientScript.RegisterClientScriptBlock(this.GetType(), "Error", strbldrErrorScript.ToString());
return false;
}
else
if (tsDaysDifference.Days < ConInterfaceManagerCommon.DATE_MINIMUM)
{
StringBuilder strbldrErrorScript = new StringBuilder("");
strbldrErrorScript.Append("alert('From date should be lessthan todate')");
strbldrErrorScript.Append("");
ClientScript.RegisterClientScriptBlock(this.GetType(), "Error", strbldrErrorScript.ToString());
return false;
}
else
if (Convert.ToDateTime(txtToDate.Text) > DateTime.Now)
{
StringBuilder strbldrErrorScript = new StringBuilder("");
strbldrErrorScript.Append("alert('To date should be lessthan current date.')");
strbldrErrorScript.Append("");
ClientScript.RegisterClientScriptBlock(this.GetType(), "Error", strbldrErrorScript.ToString());
return false;
}
else
return true;

Can anyone help how to find the date difference in dd/mm/yyyy format on serverside?

Many Thanks

Re: How to find Date differences(dd/mm/yyyy)?

Jim Conigliaro10-Dec-07 11:27

Jim Conigliaro

10-Dec-07 11:27

When converting to a datetime object, you need to specify the format of the date if you are giving it a format other than the default for the server. Your server is expecting mm/dd/yyyy, so if you want to specify a different date format, you will need to tell the ToDateTime function what format you are providing the data in.

Jim Conigliaro
jconigliaro@ieee.org
http://www.jimconigliaro.com

what was the asci code of an upward arrow

jagan12330-Nov-07 22:01

jagan123

30-Nov-07 22:01

i want the asci code of an upward arrow

Re: what was the asci code of an upward arrow

Sun Rays30-Nov-07 22:17

Sun Rays

30-Nov-07 22:17

You can try this.

&uarr

Thanks,
Sun Rays

To get something you must have to try once.

My Articles

Re: what was the asci code of an upward arrow

Jintal Patel30-Nov-07 22:49

Jintal Patel

30-Nov-07 22:49

hi
visit this link

http://www.modport.co.uk/index.php?showtopic=2045

Jintal Patel

Manage Cookie In Asp.net When It Create By Javascript

public_code30-Nov-07 21:34

public_code

30-Nov-07 21:34

i created cookie using javascript in page when i go to ather page i want manage it using asp.net i can read the cookie but i cant update it value when i update it value its create ather cookie Confused | :confused:

thnx hope u can hekp me

Crystal Reports?

Kasi Viswanathan30-Nov-07 21:32

Kasi Viswanathan

30-Nov-07 21:32

Can anybody tell where can i get good tutorials for crystal reports using asp.net2.0

Thanks in Advance... Rose | [Rose]

Erasers are for people who are willing to correct their mistakes.

Re: Crystal Reports?

John-ph30-Nov-07 21:35

John-ph

30-Nov-07 21:35

Google - Programming Crystal Reports With ASP.NET 2.0[^]

- Regards -
JON

Life is not measured by the amount of breaths we take, but by the moments that take our breath away.

javascript

kirthikirthi30-Nov-07 21:12

kirthikirthi

30-Nov-07 21:12

HI
Is it posible to call asp.net function in javascript

Example
-

i have a javascript function in that i want to call the asp.net values

var customarray=new Array('in this i want to call asp.net values' );

var custom2 = new Array('something','randomly','different');

Than Q

Keerthi

Re: javascript

Sun Rays30-Nov-07 21:16

Sun Rays

30-Nov-07 21:16

Hi,
clarify it.

Thanks,
Sun Rays

To get something you must have to try once.

My Articles

Re: javascript

Christian Graus30-Nov-07 22:25

Christian Graus

30-Nov-07 22:25

You can do this with AJAX, or you can write the values you want into the script as variables.

Re: javascript

kirthikirthi30-Nov-07 22:33

kirthikirthi

30-Nov-07 22:33

Thx For reply

my need is i have a javascript array in that array i want put asp.net array values

For Example :

------------------
in the place of 'an apple','alligator','elephant','pear' etc.. i want to put asp.net array values

var customarray=new Array('an apple','alligator','elephant','pear','kingbird','kingbolt', 'kingcraft','kingcup','kingdom','kingfisher','kingpin');
var custom2 = new Array('something','randomly','different');

Keerthi

Re: javascript

Christian Graus30-Nov-07 23:03

Christian Graus

30-Nov-07 23:03

OK, in this case, just write the values into your javascript from the code behind, no need to call it with AJAX, if the values are known, just pass them through.

Re: javascript

sulabh202030-Nov-07 23:16

sulabh2020

30-Nov-07 23:16

Hi dear,

It is Possible to call c# function through javascript.

Please go through google, if again not able to find. plz write me at personalmail@mysampatti.com

By

Hello Forum
Always be in touch to help about the topic ASP.NET

Re: javascript

sulabh202030-Nov-07 23:22

sulabh2020

30-Nov-07 23:22

u van also try by this trick

document.getElementbyId(HiddenButton).Click;

Hello Forum
Always be in touch to help about the topic ASP.NET

Re: javascript

Gandalf_TheWhite30-Nov-07 23:18

Gandalf_TheWhite

30-Nov-07 23:18

Hi Kirthi,

It is possible To Do what u have asked :
Just Look At The Example given Below.

Here I have Passed The Values That I Get From TextBox
This Code U have To Write In Ur ASPX Page

<br />
<br />
<script language="JavaScript" type="text/javascript">					<br />
	var cal = new CalendarPopup();<br />
	cal.showNavigationDropdowns();<br />
</script><br />
<br />

And This IsWhat i have written in my Saprate Javascript File This Is A Function

<br />
function stepvalidation1(txtdate1,txtdate2,txtdatenow)<br />
    {	<br />
	var flag=0;		<br />
        var dt1=document.getElementById(txtdate1);                   <br />
        var dt2=document.getElementById(txtdate2); <br />
              <br />
        if (isDate(dt1.value)==false)<br />
        {			<br />
	   dt1.focus();<br />
	   flag=1;<br />
        }<br />
        else<br />
        {<br />
					<br />
		if(step3validation(txtdate1,0,txtdatenow))<br />
		{<br />
		}<br />
		else<br />
		{<br />
		    flag=1;<br />
		}			<br />
        }                <br />
        if (isDate(dt2.value)==false)<br />
        {<br />
	      dt2.focus();<br />
	      flag=1;<br />
        } <br />
        else<br />
        {			<br />
		if(step3validation(txtdate2,0,txtdatenow))<br />
		{				<br />
		}<br />
		else<br />
		{				<br />
			flag=1;<br />
		}			<br />
        }         <br />
        if(flag>0)<br />
        {			<br />
		return false;<br />
        }<br />
        else<br />
        {<br />
			<br />
		return true;<br />
        }<br />
    }<br />

and this is the line tht i have written in my .cs File

<br />
btn_Update.Attributes.Add("onclick", "javascript:return stepvalidation1('" + date1.ClientID.ToString()+ "','" + date2.ClientID.ToString()+ "','" + System.DateTime.Now.ToShortDateString() + "');");<br />

I think This Can Help
If Any doubt on the above then Ask

Just Do IT™ [Information Technology]™ :->

Re: javascript

kirthikirthi30-Nov-07 23:47

kirthikirthi

30-Nov-07 23:47

HI than Q

it is working fine but

in my web page i am binding values to a array.

that array values i want to pass in javascript.

var customarray=new Array(---- asp.net array values ------- + 'alligator','elephant','pear','kingbird','kingbolt', 'kingcraft','kingcup','kingdom','kingfisher','kingpin');

Keerthi

Re: javascript

Manikandan.net25-Dec-07 20:00

Manikandan.net

25-Dec-07 20:00

Yes you can do this

I assume that u have a method in code behind which returns string, write a logic to return string in following format

Vaue1, value2, value3

<br />
SERVER Method(code behind): <br />
public string GetCommaSepratedUserNames()<br />
    {<br />
        //write u r logic here, instead of my sample<br />
        return "'Manikandan.net, Prem.telecom, someName.Asp'";<br />
    }<br />

Here value1, value2, value3 are your desired values, which u want to return from server.

Write the java script like bellow:

<br />
<script><br />
var customarray=new Array(<%=GetCommaSepratedUserNames()%>);<br />
<br />
var custom2 = new Array('something','randomly','different');<br />
</script><br />
<br />

Manikandan.net
[Coding is life]

asp.net /javascript

kirthikirthi30-Nov-07 21:11

kirthikirthi

30-Nov-07 21:11

Re: asp.net /javascript

manowj25-Dec-07 19:18

manowj

25-Dec-07 19:18

Hi,

Using Ajax techniques(XMLHTTP) call back function you can execute ASP.NET functions.

Regards,
Manowj

Re: asp.net /javascript

Manikandan.net25-Dec-07 20:02

Manikandan.net

25-Dec-07 20:02

Yes you can do this

I assume that u have a method in code behind which returns string, write a logic to return string in following format

Vaue1, value2, value3

SERVER Method(code behind):
public string GetCommaSepratedUserNames()
{
//write u r logic here, instead of my sample
return "'Manikandan.net, Prem.telecom, someName.Asp'";
}

Here value1, value2, value3 are your desired values, which u want to return from server.

Write the java script like bellow:

<script>
var customarray=new Array(<%=GetCommaSepratedUserNames()%>;

var custom2 = new Array('something','randomly','different');
</script>

Manikandan.net
[Coding is life]

sulabh202030-Nov-07 20:22

sulabh2020

30-Nov-07 20:22

Hi Experts,

Here i stuck to a problem with search functionality to be implemented in my web page.

I have to do serach by using all the key words like OR,~,- etc. just like google.

So i am unable to find out the method to do same.

what i only found is full text serach through SqlServer 2005 but i dont want to use that.

Please suggest be Better.

Thanks is advance

Hello Forum
Always be in touch to help about the topic ASP.NET

redirect to login page if copy and paste the url in new browser

codeproject_buna30-Nov-07 20:21

codeproject_buna

30-Nov-07 20:21

hi,

I want to redirect the user if he copy and paste the url of a post login page in a new window. I think there should be some settings in web.config.

I am using aspdotnet 1.1 with vbdotnet.
If any one has a solution for that please send me the code to implement this in my project.

thanks in advance

bikash

Last Visit: 31-Dec-99 18:00 Last Update: 10-May-24 12:38

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