To Stop Server Side Execution

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Hi All,
I have done Client Side validation through Java Script. Validation works Fine . but after validation Server code also get exceuted. i want to stop the server code.

Ex:

C#

function validate_form ( )
        {

            var  valid = true;
            if ( document.getElementById("ctl00_ContentPlaceHolder1_txtAssetDescription").value == "" )
            {
                alert ("Please Enter Asset Description");
                txtAssetDescription.focus();
                return valid ;
            }
retutn valid; 
}

Server Code:

VB

<asp:Button ID="btnSave" runat="server" Text="Save" Width="75px"
                       OnClientClick="validate_form()"
                      onclick="btnSave_Click"/>

Now Validation Works but the code written in btnSave also get executed, how to stop that?

Regards,
Pal

Posted 25-Dec-11 17:55pm

palraj001

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Vinod Satapara · Answer 1 · 2011-12-25T17:59:00

Hi
your java-script function returns true when its get executed. so your page will get post back. modify you java-script function in such a way that it will returns false when there is alert message.

function validate_form ( )
        {
 
            var  valid = true;
            if ( document.getElementById("ctl00_ContentPlaceHolder1_txtAssetDescription").value == "" )
            {
                alert ("Please Enter Asset Description");
                txtAssetDescription.focus();
                return false;
            }
retutn valid; 
}

Hope this will help :)

Thanks
Vinod

anushripatil · Answer 2 · 2011-12-25T18:02:00

IN ONclientClick use return btnsaveclick ()... as shown

VB

<asp:Button ID="btnSave" runat="server" Text="Save" Width="75px"
                       OnClientClick="return validate_form()"
                      onclick="btnSave_Click"/>

in ur function u have to return it as false

C#

function validate_form ( )
        {


return false;
}

hitech_s · Answer 3 · 2011-12-25T18:05:00

try replace your code with these

C#

function validate_form ( )
        {

            var  valid = true;
            if ( document.getElementById("ctl00_ContentPlaceHolder1_txtAssetDescription").value == "" )
            {
                valid = false;
                alert ("Please Enter Asset Description");
                txtAssetDescription.focus();
                return valid ;
            }
return valid;
}

VB

<asp:Button ID="btnSave" runat="server" Text="Save" Width="75px"
                       OnClientClick="javascript:return validate_form();"
                      onclick="btnSave_Click"/>

Muthu Nadar · Answer 4 · 2011-12-25T18:20:00

Solution 4

Set the variable to false as below

var  valid = false;

Posted 25-Dec-11 18:20pm

Muthu Nadar

Nigam Patel · Answer 5 · 2011-12-25T23:27:00

you can remove the OnClick Attribute So, if page is post back then save_Click function will not call at server side.

<asp:button id="btnSave" runat="server" text="Save" width="75px"
                      OnClientClick="return validate_form()"
                     /></asp:button>

and you can use input tag for display button so it will not post back when you will click on it.

<input type="button" value="Save"  önclick="return validate_form()" style="width:75px" />

Please let me know is this solution helpful to you.

Sarvesh Kumar Gupta · Answer 6 · 2011-12-26T18:24:00

Change below code

C#

if ( document.getElementById("ctl00_ContentPlaceHolder1_txtAssetDescription").value == "" )
            {
                alert ("Please Enter Asset Description");
                txtAssetDescription.focus();
                return false; //<== Use false in place of valid
            }

To Stop Server Side Execution

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