changing the focus from an ASP.NET control to another

  • Thread starter Thread starter vivela
  • Start date Start date
V

vivela

hi,
I hope you could help me out on this one,cause I have been trying for 4
days to solve it,but couldn't quite get it right: I have an ASP textbox
that should change the value in a dropdownlist. this happens,but the
problem is with the validation of the ddl.it has a
requiredfieldvalidator,and the error message disapears only if i select
a value from the dropdownlist,even though it should also disapear when
I write a valid name in the textbox and the item changes in the ddl.
even though I put some javascript to set the focus on the ddl,after i
write something in the textbox,this doesn't happen,and i think that's
why the validator acts like it does..
hope you could give me a piece of advise...
10x!
 
hi vivela.
it's possible that the validation message won't disappear until the focus
has gone off the dropdownlist. when you make a valid selection on a DDL by
interacting with the control via mouse/keyboard then the message should
disappear, i just wonder if the way you focus the control in javascript
doesn't trigger the validator correctly. for example, in a textbox, the
validation message won't disappear until you focus on a control outside that
textbox, perhaps the same is happening with your DDL when focused via
javascript.

can you post your code and i'll check it out?
thanks
tim
 
Hi Tim,

Here's the asp textbox,ddl and validator:

<asp:requiredfieldvalidator id="RequiredFieldValidator2" runat="server"
Font-Bold="True" Font-Size="Small" ErrorMessage="!"
ControlToValidate="ddlBranch"></asp:requiredfieldvalidator>
<asp:textbox id="txtBranchCode" onkeyup="FillBrench(this,
document.getElementById('ddlBranch'));" runat="server" Width="33px"
CssClass="field_fundal_bleu"></asp:textbox>
<asp:dropdownlist id="ddlBranch" runat="server" Width="160px"
CssClass="combo"
onchange="SincronizeAccelerator(this,document.getElementById('txtBranchCode'));"
OnBlur="getFocus(this);"></asp:dropdownlist>

And here is the javascript(the original version,I tried some other
things but they didn't work either):

function getFocus(obj)
{
obj.focus();
}

function FillBrench(obj,objSelect)
{

if(obj.value.length >0)
for (var i=0;i<objSelect.options.length;i++)
if(objSelect.options.value == obj.value)
objSelect.selectedIndex = i;



}
function SincronizeAccelerator(obj,accelerator)
{
//if(accelerator.length > 0)
accelerator.value = obj.value;
//obj.focus();
}

hope you coluld figure it out...
thank you!



Tim_Mac a scris:
 
hi Vivela,
you are right, it doesn't work as expected. i think the reason is because
when you change the selectedindex of a SELECT element via javascript, it
doesn't seem to fire the onchange event so the validators don't update
themselves.

i wrote a work around to manually trigger the client side validation. this
is for .net 2.0:
function FillBrench(obj,objSelect)
{
if(obj.value.length >0)
{
for (var i=0;i<objSelect.options.length;i++)
{
if(objSelect.options.value == obj.value)
{
objSelect.selectedIndex = i;

// re-validate all the validators
for(var j=0;j<Page_Validators.length;j++)
ValidatorValidate(Page_Validators[j]);

return;
}
}
}
}

hope this does it for you!

tim



vivela said:
Hi Tim,

Here's the asp textbox,ddl and validator:

<asp:requiredfieldvalidator id="RequiredFieldValidator2" runat="server"
Font-Bold="True" Font-Size="Small" ErrorMessage="!"
ControlToValidate="ddlBranch"></asp:requiredfieldvalidator>
<asp:textbox id="txtBranchCode" onkeyup="FillBrench(this,
document.getElementById('ddlBranch'));" runat="server" Width="33px"
CssClass="field_fundal_bleu"></asp:textbox>
<asp:dropdownlist id="ddlBranch" runat="server" Width="160px"
CssClass="combo"
onchange="SincronizeAccelerator(this,document.getElementById('txtBranchCode'));"
OnBlur="getFocus(this);"></asp:dropdownlist>

And here is the javascript(the original version,I tried some other
things but they didn't work either):

function getFocus(obj)
{
obj.focus();
}

function FillBrench(obj,objSelect)
{

if(obj.value.length >0)
for (var i=0;i<objSelect.options.length;i++)
if(objSelect.options.value == obj.value)
objSelect.selectedIndex = i;



}
function SincronizeAccelerator(obj,accelerator)
{
//if(accelerator.length > 0)
accelerator.value = obj.value;
//obj.focus();
}

hope you coluld figure it out...
thank you!



Tim_Mac a scris:
hi vivela.
it's possible that the validation message won't disappear until the focus
has gone off the dropdownlist. when you make a valid selection on a DDL
by
interacting with the control via mouse/keyboard then the message should
disappear, i just wonder if the way you focus the control in javascript
doesn't trigger the validator correctly. for example, in a textbox, the
validation message won't disappear until you focus on a control outside
that
textbox, perhaps the same is happening with your DDL when focused via
javascript.

can you post your code and i'll check it out?
thanks
tim
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