Detect Cancel Button click

[Rahul]

Hello In my radgrid one edit form .. i will update some values.. I handle some java script code for validation
Their one textbox UPC .. if UPC code is not valid it will show alert message.. after showing alert message when i tried to click on cancel. It will again and again warn me "Invalide UPC".. it's not handle cancel button click.

Code for UPC textbox

javascript
function validateUPC(txtUPC) {
        debugger;
        var txtboxUPC = document.getElementById(txtUPC);
        if (txtboxUPC.value.length != 12) {
            alert('Invalid UPC Barcode');
            txtboxUPC.focus();
            return false;
        }

        if (!validateUPCCode(txtboxUPC.value)) {
            alert('Invalid UPC Barcode');
            txtboxUPC.focus();
            return false;
        }

code behind cs file  to call javascript on textbox onblur

TextBox txtGameUPC = (TextBox)editForm.FindControl("txtGameUPC");
               txtGameUPC.Visible = true;
               txtGameUPC.Enabled = false;
               //Call Java script function to validate the UPC code
               txtGameUPC.Attributes.Add("onblur", "validateUPC('" + txtGameUPC.ClientID + "');");

On cancel button click
javascript
function RaiseCancel(sender, args) {
        if (args.get_commandName() == "CancelUpdate")//check for the condition
        {
            //your code here
        }
    }

<ClientSettings>
                    <ClientEvents OnCommand="RaiseCancel" />
                </ClientSettings>
It's does not raise event cancel. I don't know why this is happen ...

Help me urgent

plz find attach file u get an idea

[Tsvetoslav]

Hello rahul,

The easiest way is to find the button in code-behind in the ItemDataBound event and attach a client-side event handler to it.

protected void Page_Init(object sender, EventArgs e)
{
    RadGrid1.ItemDataBound += new GridItemEventHandler(RadGrid1_ItemDataBound);
}
protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
{
    if (e.Item is GridEditableItem && e.Item.IsInEditMode)
    {
        ((LinkButton)e.Item.FindControl("CancelButton")).Attributes.Add("onclick", "javascript:return RaiseCancel()");
    }
}

Hope it helps.

Greetings,
Tsvetoslav
the Telerik team