Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 404
  • Last Modified:

how to attribute to loginbutton in the loginform

Just like this , i need to add attribute for the loginbutton inside the login form ,
Login1.Attributes.Add("onclick", "return validate();")

but if i enter loginbutton i get name is not declared,
like this
LoginButton.Attributes.Add("onclick", "return validate();")

I want to add this atribute on pageload only , not on the onclientclick in design page.....plz suggest,,
<asp:Login ID="Login1" runat="server" >
                    <LayoutTemplate>
                        <table border="0" cellpadding="1" cellspacing="0" style="border-collapse: collapse">
                            <tr>
                                <td style="height: 146px">
                                    <table border="0" cellpadding="0">
                                        <tr>
                                            <td align="center" colspan="2" style="height: 12px">
                                                Log In</td>
                                        </tr>
                                        <tr>
                                            <td align="right">
                                                <asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">User Name:</asp:Label></td>
                                            <td>
                                                <asp:TextBox ID="UserName" runat="server"></asp:TextBox>
                                                <asp:RequiredFieldValidator ID="UserNameRequired" runat="server" ControlToValidate="UserName"
                                                    ErrorMessage="User Name is required." ToolTip="User Name is required." ValidationGroup="Login1">*</asp:RequiredFieldValidator>
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="right">
                                                <asp:Label ID="PasswordLabel" runat="server" AssociatedControlID="Password">Password:</asp:Label></td>
                                            <td>
                                                <asp:TextBox ID="Password" runat="server" TextMode="Password"></asp:TextBox>
                                                <asp:RequiredFieldValidator ID="PasswordRequired" runat="server" ControlToValidate="Password"
                                                    ErrorMessage="Password is required." ToolTip="Password is required." ValidationGroup="Login1">*</asp:RequiredFieldValidator>
                                            </td>
                                        </tr>
                                        <tr>
                                            <td colspan="2">
                                                <asp:CheckBox ID="RememberMe" runat="server" Text="Remember me next time." />
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="center" colspan="2" style="color: red">
                                                <asp:Literal ID="FailureText" runat="server" EnableViewState="False"></asp:Literal>
                                                <asp:Label ID="Label1" runat="server" Style="position: relative" Text="Label"></asp:Label></td>
                                        </tr>
                                        <tr>
                                            <td align="right" colspan="2">
                                                <asp:HyperLink ID="HyperLink2" runat="server" NavigateUrl="~/forgorpassword.aspx"
                                                    Style="left: 0px; position: relative; top: 0px">ForgetPassword?</asp:HyperLink>&nbsp;
                                                <asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl="~/regis1.aspx" Style="left: -139px;
                                                    position: relative; top: 1px">SignUP?</asp:HyperLink>
                                                        <asp:Button ID="LoginButton" runat="server" CommandName="Login"
                                                    Text="Log In" ValidationGroup="Login1" />
                                                   
                                            </td>
                                        </tr>
                                    </table>
                                </td>
                            </tr>
                        </table>
                    </LayoutTemplate>
                                   </asp:Login>

Open in new window

0
Rajar Ahmed
Asked:
Rajar Ahmed
  • 5
  • 4
1 Solution
 
aprestoCommented:
Try this (C#):
((Button)Login1.FindControl("LoginButton")).Attributes.Add("onclick", "return validate();")
0
 
aprestoCommented:
Sorry didnt realise it was in VB, just change the casting to VB.Net instead of this ((button).... as this is a c# casting
0
 
Rajar AhmedConsultantAuthor Commented:
i converted , , accordingly to vb,
  Dim loginButton As Button = Login1.FindControl("LoginButton")
         loginButton .Attributes.Add("onclick", "return validate();")
 
  but this generates a postback which is unneccessary .....i need to avoid the postback ...
 if i add like this
 Login1.Attributes.Add("onclick", "return validate();") .am not gettin postback......

0
Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

 
aprestoCommented:
If you do "Login1.Attributes...." you are adding the attribute to the actual Login control, if you use the other you are assigning the attribute to the button itself.
Do you want to postback if you form is validated and NOt postback when it is NOT validated? Or you dont want a postback fullstop?
0
 
Rajar AhmedConsultantAuthor Commented:
i need to do the simple task of validation , when its not validated the page should not postback and pops out the error message ,
0
 
aprestoCommented:
are you returning true or false in your validation, based on whether the form is valid, in the Javascript?
0
 
Rajar AhmedConsultantAuthor Commented:
I need to display the failed message , without the post back  onclicking the loginbutton  .. i pasted the javascript  below....
It display failed message but after the postback.....need to avoid the postback on loginbutton click...
 

 if(xmlHttp.responseText == "failed")
        {
            document.getElementById("Login1_Label1").innerHTML='Failed';
        }

<script language="javascript" >
function validate()
{
var xmlHttp;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    try
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    catch (e)
      {
      alert("Your browser does not support AJAX!");
      return false;
      }
    }
  }
  xmlHttp.onreadystatechange=function()//already exists
    {
    if(xmlHttp.readyState==4)
      {
      
      if(xmlHttp.responseText == "failed")
        {
            document.getElementById("Login1_Label1").innerHTML='Failed';
        }
      else
            { 
              window.location.href = "index.aspx";            
      }
      }
    }
    alert("togetquery");
  xmlHttp.open("GET","index.aspx?proc=chk&val="+document.getElementById("Login1_UserName").value+"&val2="+document.getElementById("Login1_Password").value,true);
  xmlHttp.send(null);
  }
</script>

Open in new window

0
 
aprestoCommented:
Make sure you return false where you dont want the form to submit:i.e

 if(xmlHttp.responseText == "failed")
       {
           document.getElementById("Login1_Label1").innerHTML='Failed';
           return false;
       }
 
 
or if you dont want to return false there, create a holding variable to hold your boolean value:
 
var success = false; //normally at the top of your function/class
....
success = false; //When you decide in a condition that you dont want to submit
...
return success;//Stop the script and return the success state

Open in new window

0
 
Rajar AhmedConsultantAuthor Commented:
total confusionnnnnnn,,,,,,,,,,,,,,,

after click loginbutton, imdiately its getting postback before validating itself and after returning the false message.....
if i use this code/.....
 Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim loginButton As Button = Login1.FindControl("LoginButton")
        loginButton.Attributes.Add("onclick", "return chkEmail();")
    End Sub

whereas in code This, the page is not gettin post back ,and returning false message..........just like a client side validation....
 Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Login1.Attributes.Add("onclick", "return chkEmail();")
    End Sub

Where i s the problem..??

i guess problem is not in the javascript.......plz sugggest......??

function chkEmail()
{
alert("incheckemail");
var xmlHttp;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    try
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    catch (e)
      {
      alert("Your browser does not support AJAX!");
      return false;
      }
    }
  }
  xmlHttp.onreadystatechange=function()//already exists
    {
    if(xmlHttp.readyState==4)
      {
      
      if(xmlHttp.responseText == "failed")
        {
        alert("in fail");
document.getElementById("Login1_Label1").innerHTML='Failed';
return false;
        }
      else
            { alert("inelse");
 
              window.location.href = "hi.aspx";       
      }
 
      }
    }
    
  xmlHttp.open("GET","index.aspx?proc=chk&val="+document.getElementById("Login1_UserName").value+"&val2="+document.getElementById("Login1_Password").value,true);
  xmlHttp.send(null);
  }

Open in new window

0

Featured Post

Hire Technology Freelancers with Gigs

Work with freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely, and get projects done right.

  • 5
  • 4
Tackle projects and never again get stuck behind a technical roadblock.
Join Now