Javascript confirm not popping up - ASP.net

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Hi,

I have a javascript for confirm that assigns a value to an asp hidden field

XML

function ConfirmBox(msg) {
    var x;
    if (confirm(msg))
    {
        document.getElementById('<% =inpHide.ClientID %>').value = "1";
        //return true;
    }
    else
    {
        document.getElementById('<% =inpHide.ClientID %>').value = "0";
        //return false;
    }

}

it will be called to from codebehind using this:

C#

ClientScriptManager script = Page.ClientScript;

                            script.RegisterStartupScript(this.GetType(), "Error", "ConfirmBox('ADS Keymetrics General report already exists for this account for Q" + ADSImport.Upload.QTo + " " + ADSImport.Upload.YrTo + ". Do you want to overwrite the record?');", true);
                            
                            int DiagResult = int.Parse(inpHide.Value);
                            if (DiagResult == 1)
                            { ClientScript.RegisterClientScriptBlock(this.GetType(), "Error", "MessageBox('OK');", true); }

the confirm box won't pop-up and when i trace the code, it just passes by the RegisterStartupScript code and goes directly to

C#

int DiagResult = int.Parse(inpHide.Value);

that's why it gives me an error: "Input string was not in a correct format." since the variable inpHide has a null value.

any help is greatly appreciated.

Thanks!

Posted 1-Oct-12 5:10am

Franco Cipriano

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Comments

bbirajdar 1-Oct-12 11:57am

You cannot CALL javascript from server side.. However, you can INITIALIZE javascript from server-side using the above procedure..

1 solution

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Sandeep Mewara · Answer 1 · 2012-10-01T05:25:00

Solution 1

Well, you inject a JavaScript code and then instantly try to access (on server side) value of one of the controls involved. How will it work?

Injecting JavaScript will not set the value. A call to ConfirmBox() will set the value and post that whenever you try to access that control value on server side, you will get back the set value.

Either, move your logic to a proper place or set a default value of inpHide such that there is no error and it can go on smooth.

Posted 1-Oct-12 5:25am

Sandeep Mewara

Comments

Franco Cipriano 1-Oct-12 11:36am

The line before the variable declaration of DiagResult calls the ConfirmBox() where I can assign the value of the inpHide through the javascript function. But in this case, the ConfirmBox() does not execute..but when I put the ConfirmBox() function on the onClientClick event of the button it pops-up..any idea??

thanks,

Sandeep Mewara 1-Oct-12 11:46am

Page is not yet complete. Once the code is executed, page is constructed. Your code would not work as you are trying to. Going with onClientclick or so would be correct way.

Franco Cipriano 1-Oct-12 12:44pm

Yes, that's why I put it on the codebehind since I need to have a dialog box that will pop-up and let the user know if they want to continue of not.

Thanks!

Franco Cipriano 1-Oct-12 13:24pm

i used ClientScriptManager.RegisterClientScriptBlock (Type typeofscript, String key, String script, true)..to initialize a javascript alert dialog box and it worked..im not sure why it does not let the confirm box pop-up..

Franco Cipriano 3-Oct-12 11:56am

When doing some more debugging i found out something on the the code..instead of popping up a dialog box when the code passes on the clientscript line..what it does is passes on the clientscript block, and continue until the function is done and pops up a dialog box..am I doing something wrong in the code?

Thanks,

Javascript confirm not popping up - ASP.net

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Javascript confirm not popping up - ASP.net

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