ASP.NET

26-Oct-07 23:56

how should i do with the dropdownlist in javascript.Like the selected-index , selected value , items.count functions in c#?

actually i wanted to use the dropdownlist functions in javascript.

Soniagupta1@yahoo.co.in
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Arindam Tewary27-Oct-07 0:21

Arindam Tewary

27-Oct-07 0:21

Dear Sonia Gupta,
Its a ASP .NET forum ..... it is good that you post it in javascript forum of web development forum
In javascript...considering your drop down list controls ID is 'dddCountry'
.......

objDropDownList = document.getElementById('dddCountry')
int selectedIndex=objDropDownList.selectedIndex;

var SelectedText = objDropDownList.options[selectedIndex].text;
var SelectedValue = objDropDownList.options[selectedIndex].value;

... Hope it helps ... Roll eyes | :rolleyes:

Thanks,
Arindam D Tewary

Sonia Gupta27-Oct-07 0:25

27-Oct-07 0:25

how can i count the total items in the dropdownlist using the java script.

Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1

Arindam Tewary27-Oct-07 0:40

Arindam Tewary

27-Oct-07 0:40

objDropDownList.options.length returns the length of items collection!!!

Thanks,
Arindam D Tewary

Arif patel27-Oct-07 2:08

Arif patel

27-Oct-07 2:08

Hi Sonia,
Looking at u r quarries I suggest you to visit this following site
"www.javascripter.net" just navigate FAQ section of this site u will get solution for u r quarries.

Regards,
S.Arif patel

Imran Khan Pathan27-Oct-07 0:41

27-Oct-07 0:41

Sonia Gupta wrote:
selected-index

ddl.options.selectedIndex

Sonia Gupta wrote:
selected value

var month=ddl.options.selectedIndex;

Sonia Gupta wrote:
items.count

dd.items.Length

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pAthan

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textbox substring validation

Arif patel27-Oct-07 1:49

Arif patel

27-Oct-07 1:49

To create a select menu like dropdownlist(select)
you can use the following code:

Select a page
JavaScript
Numbers
Strings
Navigation
Colors
JavaScripter.net

Just change the menu items and the corresponding URLs to whatever you want. You can use absolute URLs (like http://www.javascripter.net) as well as relative URLs (like mypage.htm).

Regards,
S.Arif patel
Mind Source Pvt Ltd.

Sonia Gupta26-Oct-07 22:45

Re: textbox substring validation

26-Oct-07 22:45

i am having the appostophie character in the textbox .i need to do the client side validation.how should i check the substring in the textbox. i mean , it the textbox contains that character.hpw i should validate this thing

Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1

John-ph26-Oct-07 23:11

John-ph

26-Oct-07 23:11

Sonia Gupta wrote:
hpw i should validate this thing

Use any client-side scripting language(Javascript or VB script). Alternate Use RegularExpression Validation Control.

Regards
- J O H N -

Re: textbox substring validation

Abhijit Jana26-Oct-07 23:15

Abhijit Jana

26-Oct-07 23:15

Hi Sonia,
You can use Custom Validator control.
let you have a textbox Textbox1 and Drag a CustomValidator Control
in CustomValidator Set ControlToValidate=Textbox1
use this method to check the validation under this control.

Thaks !

Best Regards
-----------------
Abhijit Jana
View My CodeProject Articles

"Success is Journey it's not a destination"

Re: textbox substring validation

Imran Khan Pathan26-Oct-07 23:21

26-Oct-07 23:21

You can split value with appostophie character in javascript.

get itExample

or
if you want substring of value then get it Example
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Re: gridview

N a v a n e e t h26-Oct-07 22:40

N a v a n e e t h

26-Oct-07 22:40

Make autopostback=true of drop down list. This will post the page when drop down list changes. Handle it's selectedindexchanged event, and bind the gridview here with the required values.

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client side validations

Sonia Gupta26-Oct-07 21:40

Re: client side validations

26-Oct-07 21:40

i have a button and a textbox control.I am executing a chunk of code , on the button click event, there in the button click event,i am validating the textbox(whether the textbox is having some value or not).i wanted to do the validations at the client end.i mean first i want to validate the textbox in the javascript , if it is having some value , only then the code behind code should execute.How should i do it.Main thing is i want to execute the code behind file code , if the textbox is having some value , otherwise , the postback should not happen.

Soniagupta1@yahoo.co.in
Yahoo Messenger Id = soniagupta1

N a v a n e e t h26-Oct-07 21:54

N a v a n e e t h

26-Oct-07 21:54

Sonia Gupta wrote:
i wanted to do the validations at the client end.i mean first i want to validate the textbox in the javascript , if it is having some value , only then the code behind code should execute.How should i do it

Assume your button is button1. So in page load event, write something like

button1.Attributes.Add("OnClick","return MyJSFunc();");

This will add the Onclick attribute to the button. Now inside the MyJSFunc(), get textbox element and check the value. If value is ok, return true else return false.

function MyJSFunc()
{
   var TxtBox = document.getElementById("YourTextboxId");
   if(TxtBox.value == "")
   { 
      alert("Enter value");
      return false;
   }
   else
      return true;
}

These are the basic things, and I recommend you to buy a book and learn how things are working.

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how?????????????

ajsgja26-Oct-07 19:58

ajsgja

26-Oct-07 19:58

How to make an array of buttons so that whenever i click any of my buttons i should get it's text ??????????????
pls reply as soon as possible...bcos i m new in asp.net and i got stuck in my project

Imran Khan Pathan26-Oct-07 20:07

26-Oct-07 20:07

but why you want to create an array?
I did give an example yesterday.
can you tell me whats your exact problem?

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pAthan

ajsgja26-Oct-07 21:37

ajsgja

26-Oct-07 21:37

exactly i want to create a calculator..for that i have to check whether a button clicked is digit/opeerator/other..for that if i take simple buttons then i have to ckeck for each buttons..instead i want to do like that if i press any button then i should get it's text i.e. whether it is digit/operator/other????????

Imran Khan Pathan26-Oct-07 22:00

Re: how????????????? [modified]

26-Oct-07 22:00

I did give you an example.
cosider you have four button for "+" ,"=","1" and "2"

html source code

asp:button id"btnplus" runat="server" onclick="calendar_click" Text="+" />
asp:button id"btnequal" runat="server" onclick="calendar_click" Text="=" />
asp:button id"btnone" runat="server" onclick="calendar_click" Text="1" />
asp:button id"btntwo" runat="server" onclick="calendar_click" Text="2" />

global val

int prevVal,CurrVal;

event

protected void calendar_click(object sender,....)
{


string key=((Button)Sender).Text;
switch(key)
case "+":
   preVal=int.Parse(txtVal.Text);
   txtVal.Text="";
   break;
case "=":
   currVal=int.Parse(txtVal.Text);
   txtVal.Text=preval+currVal;
   break;
case "1":
  txtVal.Text=key;
  break;
case "2":
  txtVal.Text=key;
  break;
   

}

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N a v a n e e t h26-Oct-07 21:22

N a v a n e e t h

26-Oct-07 21:22

ajsgja wrote:
How to make an array of buttons

You can't make array of buttons. I think you are from VB background, and talking about control array, it's not possible here with C#

-- modified at 3:40 Saturday 27th October, 2007

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