Submit button and Javascript

Question

I have a Submit button with code behind that evaluates stuff in c#, the problem is that I also want to add a function in javascript that asks "This file already exists, do you want to replace it?

So my question is how can I trigger both?

OnClick="myC#mehod" and also OnClientClick =  return (some javascript);

Can I do this?...

Please don't put "ASP.NET C#" and such in your title. Leave it in the tags, where it belongs. — John Saunders
– John Saunders, Commented Jun 28, 2011 at 15:16

Community · Accepted Answer · 2011-06-28 15:37:20Z

1

deleteBtn.Attributes["onClick"] = 
    "return confirm('This file already exists, do you want to replace it?');"

Updated for clarification;

<asp:Button ID="btnReplace" runat="server" onclick="btnReplace_Click" Text="Button" OnClientClick="return confirm('This file already exists, do you want to replace it?');" />

protected void btnReplace_Click(object sender, EventArgs e)
{
//Replace the File
}

edited Jun 28, 2011 at 15:37

CommunityBot

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answered Jun 28, 2011 at 14:58

Kinexus

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8 Comments

SuperUser555 Over a year ago

Great and how do I evaluate if they clicked yes or no? something like if they confirmed = do this if not do nothing

Saurabh Over a year ago

if it goes to OnClick is which "myC#mehod" then user pressed "OK" otherwise it will stop processing if user pressed "Cancel".

Kinexus Over a year ago

have you defined the eventhandler for server_click as well? You need both.

SuperUser555 Over a year ago

I have one event handler for OnClick="on_Submit", what else do I need? can you elaborate.. I am kind of a newbie thank you

SuperUser555 Over a year ago

Thank you Chris, the problem with this is that we are always assuming we want to replace the file but it is based on a condition, if the old file name equals the new file name then it should pop that up....

|

Saurabh · Accepted Answer · 2011-06-28 14:59:00Z

0

OnClientClick="return confirm('This file already exists, do you want to replace it?');"

answered Jun 28, 2011 at 14:59

Saurabh

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Comments

Ahmed Magdy · Accepted Answer · 2011-06-28 15:05:08Z

-2

OnClientClick = "if(!confirm('This file already exists, do you want to replace it?')) return false;"

this is more safer than return direct

answered Jun 28, 2011 at 15:05

Ahmed Magdy

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3 Comments

Kinexus Over a year ago

How so? If they click 'Yes', it returns true. If they click 'No', it returns false; if(!true) return false just adds an additional evaluation and no extra functionality

Ahmed Magdy Over a year ago

I've read it before that if you add return at the beginning might makes some problems with some old browsers. I'm just returning based on a condition. If we use return at the beginning this means I should return something either false or true and don't continue to the next statement which is the default behavior/code for the button. So some old browsers doesn't understand that then it breaks the method even if it returned true.

Ahmed Magdy Over a year ago

check this post answer to validate my words stackoverflow.com/questions/3730518/… it is returning in all cases

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