ASP.NET

Re: Assign a value to a hidden field from javascript

15-Jul-09 0:53

Hi,
How to assign a value to a hidden field from javascript in page load.

eg:
I when a page load the screen resolution is taken from javascript and assign to a hidden field, and i need to do some work using the hiddenfield in code behind

When i try the value is assign in javascript but in code behind it shown blank in hiddenfield

Thankyou
YPKI

Sabari MD15-Jul-09 1:00

Re: Assign a value to a hidden field from javascript

15-Jul-09 1:00

show your code first

Sabari MD
Application Developer
Veloxit Info Solutions

yesu prakash15-Jul-09 1:04

Re: Assign a value to a hidden field from javascript

15-Jul-09 1:04

function SetValue() {
var width = screen.width;
var height = screen.height;
document.getElementById('hdnVal').value = width+'*'+height;
}

after i call the function

window.onload = SetValue();
<script>

Sabari MD15-Jul-09 1:07

Re: Assign a value to a hidden field from javascript

15-Jul-09 1:07

try by calling inside or inside

Sabari MD
Application Developer
Veloxit Info Solutions

Sabari MD15-Jul-09 1:14

Re: Assign a value to a hidden field from javascript

15-Jul-09 1:14

function SetValue() {
var width = screen.width;
var height = screen.height;
document.getElementById("hdnVal").value = width+"*"+height;
}

chk this

Sabari MD
Application Developer
Veloxit Info Solutions

janani1315-Jul-09 1:10

janani13

15-Jul-09 1:10

print the value in alert and check whether it is called and its value.

Re: Assign a value to a hidden field from javascript

Christian Graus15-Jul-09 1:17

Re: Assign a value to a hidden field from javascript

15-Jul-09 1:17

I suspect your issue is that you use the server side id of the control. You need to use the ClientID property of the control to work out the id you need to pass to the client to search for the control. You can also use Firebug in Firefox to step through your js and see what is happening.

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.

yesu prakash15-Jul-09 1:22

Re: Assign a value to a hidden field from javascript

15-Jul-09 1:22

When i give in alert, the value is displayed in alert box, but it is empty in code behind.

Christian Graus15-Jul-09 1:29

Re: Assign a value to a hidden field from javascript

15-Jul-09 1:29

Well, your code sucks because it called getElementById and does not check that something was returned. Have you tried what I suggested ? Are you SURE you're using the right client side id ?

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.

yesu prakash15-Jul-09 1:46

Re: Assign a value to a hidden field from javascript

15-Jul-09 1:46

contols i tried,

<asp:hiddenfield id="hdnResolution" runat="server">
and

i try getElementById and getElementsByName also
both giving right result in alert box, but blank in code behind.

A javascrprt error:'Not Implemented' also

Christian Graus15-Jul-09 2:34

Re: Assign a value to a hidden field from javascript

15-Jul-09 2:34

ypki wrote:
A javascrprt error:'Not Implemented' also

So there is your issue.

Again, you need to pass the client id through in your script. Just like I told you in my first reply

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.

yesu prakash15-Jul-09 2:59

Re: Assign a value to a hidden field from javascript

15-Jul-09 2:59

how?

Ajeet mittal15-Jul-09 3:12

Ajeet mittal

15-Jul-09 3:12

function SetValue() {
var width = screen.width;
var height = screen.height;
document.getElementById('<%= hdnVal.ClientID %>').value = width+'*'+height;
}

use this function to set value in hiddenfield through javascript.

How to decrypt the password

janani1315-Jul-09 0:45

janani13

15-Jul-09 0:45

How to decrypt the password with is encrypted by sha alg.

public static string HashPassword(string plainMessage)
    {
        byte[] data = Encoding.UTF8.GetBytes(plainMessage);
        using (HashAlgorithm sha = new SHA256Managed())
        {
            byte[] encryptedBytes = sha.TransformFinalBlock(data, 0, data.Length);
            return Convert.ToBase64String(sha.Hash);
        }
    }

  
    #endregion

    protected void btnSubmit_Click(object sender, EventArgs e)
    {
        bo.UserID = txtUserId.Text;
        Password p = new Password(txtPassword.Text.ToString());
        String newpwd = p.SaltedPassword;
        System.Nullable<int> newsaltkey = p.Salt;
        bo.Encryptpwd = newpwd;
        bo.Saltkey = p.Salt;
        bo.Password = txtPassword.Text;

        passwordFormat = MembershipPasswordFormat.Hashed;
        if (passwordFormat == MembershipPasswordFormat.Hashed)
            bo.Blogpwd = HashPassword(txtPassword.Text);
        else
            bo.Blogpwd = txtPassword.Text;

Re: How to decrypt the password

Sabari MD15-Jul-09 1:02

Re: How to decrypt the password

15-Jul-09 1:02

private string Encryption(string strText, string strEncrypt)
{
byte[] byKey = new byte[20];
byte[] dv = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
try
{
byKey = System.Text.Encoding.UTF8.GetBytes(strEncrypt.Substring(0, 8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputArray = System.Text.Encoding.UTF8.GetBytes(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, dv), CryptoStreamMode.Write);
cs.Write(inputArray, 0, inputArray.Length);
cs.FlushFinalBlock();
return Convert.ToBase64String(ms.ToArray());
}
catch (Exception ex)
{
throw ex;
}
}
public string encryptPassword(string strText)
{
return Encryption(strText, "&%#@?,:*");
}

public string decryptPassword(string str)
{
return Decrypt(str, "&%#@?,:*");
}
private string Decrypt(string strText, string strEncrypt)
{
byte[] bKey = new byte[20];
byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
try
{
bKey = System.Text.Encoding.UTF8.GetBytes(strEncrypt.Substring(0, 8));
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
Byte[] inputByteArray = inputByteArray = Convert.FromBase64String(strText);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(bKey, IV), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
System.Text.Encoding encoding = System.Text.Encoding.UTF8;
return encoding.GetString(ms.ToArray());
}
catch (Exception ex)
{
throw ex;
}
}

Sabari MD
Application Developer
Veloxit Info Solutions

Christian Graus15-Jul-09 1:18

Re: How to decrypt the password

15-Jul-09 1:18

A hash cannot be decrypted. Instead what you can do, is encrypt what the user entered and see if the two values match.

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.

janani1315-Jul-09 1:35

janani13

15-Jul-09 1:35

K thx..

Data Binding in Custom Control

pulak srivastava15-Jul-09 0:35

pulak srivastava

15-Jul-09 0:35

Hi All,

I have a custom panel control.Now i want to set the databound property of this control.

Can anybody help me with example.

Regards
Pulak

ASP.net With Oracle

sandhya1415-Jul-09 0:18

sandhya14

15-Jul-09 0:18

Hi all.....

This is my oracle statement...while executing its giving an error:

21/29 PL/SQL: ORA-00923: FROM keyword not found where expected

please help me to solve this issue.. its urgent...
create or replace PROCEDURE PEAP_SelectEmpAppraiser
(
AppraiserID IN VARCHAR2 DEFAULT NULL,
Cur_RCT1 OUT GLOBALPKG.RCT1
)
AS
BEGIN

EXECUTE IMMEDIATE 'TRUNCATE TABLE PEAP_SelectEmployeesByApr';

INSERT INTO PEAP_SelectEmployeesByApr
SELECT emp_code AS EmployeeID,
emp_code || ' ' || l_name || ' ' || f_name AS SurNameFirstName
FROM emp_master
WHERE (Appraiser = PEAP_SelectEmpAppraiser.AppraiserID);
Insert into PEAP_SelectEmployeesByApr
SELECT emp_code as EmployeeID ,emp_code || ' ' || l_Name || ' ' ||
f_Name AS SurNameFirstName FROM emp_master
WHERE ( Reporting_To = PEAP_SelectEmpAppraiser.AppraiserID) and
isnull ( Appraiser , '') = '' and emp_code not in
( select EmployeeID from PEAP_SelectEmployeesByApr);
OPEN Cur_RCT1 FOR
SELECT DISTINCT
EmployeeID,
SurNameFirstName
FROM PEAP_SelectEmployeesByApr;
END;
/

Christian Graus15-Jul-09 0:41

15-Jul-09 0:41

This is complex enough that I would break it down. Type it in one part at a time until you find where the error is.

This also has nothing to do with ASP.NET, so it belongs in the SQL forum.

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.

sandhya1415-Jul-09 0:58

sandhya14

15-Jul-09 0:58

SELECT emp_code as EmployeeID ,emp_code || ' ' || l_Name || ' ' ||
f_Name AS SurNameFirstName FROM emp_master
WHERE ( Reporting_To = PEAP_SelectEmpAppraiser.AppraiserID) and
isnull ( Appraiser , '') = '' and emp_code not in
( select EmployeeID collate database_default from PEAP_SelectEmployeesByApr)

Error:

PL/SQL: ORA-00923: FROM keyword not found where expected

Christian Graus15-Jul-09 1:19

15-Jul-09 1:19

Why do you need collate database_default ? What if you remove it ?

You really should move this to the right forum. And if you want to reply to me, you should reply to me, not to yourself.

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.

sandhya1415-Jul-09 1:27

sandhya14

15-Jul-09 1:27

can u just tel me which forum i should post this message?...

and if i remove collate database_default am getting this error:

PL/SQL: ORA-00933: SQL command not properly ended