required validation based on value selected from dropdown list

[parshupooja]

Hello,

I am using asp.net C#
I have a form which has various controls such as Dropdownlist, textboxes.
If user select value"10" or "13' from drop down than textbox field should become mandatory, otherwise it can be left blank.

Any help will be appreciated
Thank You

[nateraaaa]

Hello,

I am using asp.net C#
I have a form which has various controls such as Dropdownlist, textboxes.
If user select value"10" or "13' from drop down than textbox field should become mandatory, otherwise it can be left blank.

Any help will be appreciated
Thank You

When you say it becomes mandatory do you mean that the form cannot be submitted until data is entered in the textbox?

[parshupooja]

Yes it should become mandatory and if not filled in , form can not be submitted

Thank You

[Plater]

That sounds like a javascript enfocement thing.
If those conditions come up, you should have javascript telling people that the form can't be sumbited until something is filled into that textbox, if they try and submit it with it blank

[parshupooja]

Hi

I am not good in Javascript. If you think I should use Javascript than can you please show me?


Thank You

[nateraaaa]

Hi

I am not good in Javascript. If you think I should use Javascript than can you please show me?


Thank You

Javascript would be the easiest but you can also do this in the code behind. Create a boolean variable that will determine if the form can be submitted. Now create an if statement that will tell you if 10 or 13 are selected in the dropdownlist. If they are set your boolean to false. Finally write an if statement that will check the boolean and determine whether or not to proceed with the submit. Here is a quick sample of the code:

bool submit = true;

if(dropdownlist1.SelectedValue == 10 || dropdownlist1.SelectedValue == 13)
{
submit = false;
}

if(submit == false)
{
Label1.Text = "You must enter text in the textbox";
//you could also use a javascript popup window here to inform the user.
}
else
{
//submit the form with an insert proc or something.
}

Nathan