How to call postback using javascript on ASP.NET form
I have a web form with textbox and button. I want after "ENTER" key click on textbox postbak form.
I am using next code:
onkeypress=" if(event.keyCode==13)
{ alert(2);
WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions('ctl00$ContentPlaceHolder1$btnSearch', '', true, '', '', false, false));
alert(2);
return false;}
where WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions('ctl00$ContentPlaceHolder1$btnSearch', '', true, '', '', false, false));
is javascript code for button event 开发者_C百科onclick.
I get two alerts, but postback doesnot happen.
Any ideas what is wrong?
ASP.NET already creates a client side javascript method __doPostBack to support postback.
Example: __doPostBack('__Page', 'MyCustomArgument');
Easier way of doing it is to enclose the controls in a panel and use defaultbutton attribute on the panel, like this:
<asp:Panel ID="pan1" runat="server" DefaultButton="btnSave">
<asp:TextBox ID="txt1" runat="server" />
<asp:Button ID="btnSave" runat="server" />
</asp:Panel>
Then when you press 'enter' after entering the value in the text box it will behave as if you clicked on the btnSave button.
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