How can I make postback after user changes textbox text and hits enter ?
Is only javascript real solution. Doesnt asp.net give any out from box solution for such a problem ?
Thank You for any hints.
Beside the javascript solutions, you can place the textbox with a submit button inside a panel and make use of DefaultButton property of the panel.
Below is the code example: -
Your aspx will look like this
<asp:Panel ID="Panel1" runat="server" DefaultButton="Button1">
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="Button" />
</asp:Panel>
Now, when you press enter inside the text box the button click event occurs, same as by clicking the button.
Related
I've a page where on page load event I've set focus on a textbox using javascript. But after button press I've to set focus on different text box of different asp:Panel. Is this possible using javascript? Currently I am doing this via code behind page.
<script type="text/javascript">
$(function () {
document.getElementById('<%=txtPassengerId.ClientID%>').focus();
});
</script>
<asp:Panel ID = "firstPanel" >
<asp:TextBox ID="txtPassengerId" runat="server"/>
<asp:Button ID="btn_search" runat="server" Text="Search" OnClick="btn_search_Click" />
</asp:Panel>
<asp:Panel ID = "secondPanel" >
<asp:TextBox ID="txtDestination" runat="server"/>
</asp:Panel>
After the button pressed secondPanel is visible and I need to focus on txtDestination text box. Is this possible using javascript?
Yes, you have to use the selector you've used "document.getElementById" and use the .focus() function.
document.getElementById("secondpanel").style.visibility = "visible";
document.getElementById("txtDestination").focus();
should do it. if you need more just comment.
I am trying to get a javascript function to work properly with my asp.net controls. I have two radio buttons and three textboxes.
When the first radio button is clicked I would like to disable the third textbox and when the second radio button is clicked I would like to disable the third text box. See the attachment for a screenshot.
I have tested that the function works by adding "OnClick" to the first radio button and setting AN ALERT WHICH IS WORKING.
However, I am not sure how to pass the controls in to the function to have access to them. Anyone know how to do this?
Screenshot
ASP.NET
<asp:RadioButton ID="RadioButton1" runat="server" Checked="True" GroupName="DateTimeQuery" OnClick="TimeRangeClickEvent()"/>
<asp:TextBox ID="startdatetext" Enabled="true" runat="server" MaxLength="10"></asp:TextBox>
<asp:TextBox ID="enddatetext" Enabled="true" runat="server" MaxLength="10"></asp:TextBox>
<asp:RadioButton ID="RadioButton2" runat="server" GroupName="DateTimeQuery" OnClick="TimeRangeClickEvent() />
<asp:TextBox ID="withinthepast" Enabled="true" runat="server" Text="1"></asp:TextBox>
Javascript
<script>
function TimeRangeClickEvent(How do I pass asp.net controls here)
{
alert('Working');
}
</script>
You should use ClientID control properties to get IDs of HTML elements and then work with them from Javascript. More info.
In Javascript:
var radio1 = document.getElementById('<%=RadioButton1.ClientID%>');
When you have all your HTML elements you just need to handle necessary change/clicked/selected events in javascript to make it work.
I have a button:
<asp:Button Text="Reset" runat="server" ID="ResetButton" OnClientClick="ResetClick()"/>
that runs the following JavaScript function when it gets clicked:
function ResetClick() {
document.getElementById("<%=lblError.ClientId%>").innerHTML = "";
}
That changes the text on this label:
<asp:Label ID="lblError" runat="server" Style="color: Red;" Text=""></asp:Label>
Unfortunately, my code behind also changes the label text to an error message using the following code:
lblError.Text = "No data is available"
When I click the reset button, the text is momentarily cleared and then it fills again with the error message. Is there any way to have the code behind set a message in the label and let the JavaScript clear the message?
If you do not want the button to post back then you should add return false; to the OnClientClick attribute:
<asp:Button Text="Reset" runat="server" ID="ResetButton" OnClientClick="ResetClick(); return false;"/>
PS: adding as an answer since it sounds like it was helpful.
I have an UpdatePanel inside page with couple of buttons. Each button cause PostBack event. But I found that user can click multiple times in button and crash application. I want ot disable all buttons on first click until postback will be handled and new content of UpdatePanel arrived.
I tried to bind (via jquery) to 'click' event of button, set 'disabled; attribute and call 'submit' on parent form. Unfortunately is seems that this method not working - content of UpdatePanel still old.
After that I tried to override 'submit' event but faced another issue - how to submit form again if I came to my handler each time? It may be fixed with introducing flag variable, but I dislike it - another variable just increase code entropy.
Maybe I can do it somehow with ASP.NET methods?
Apply ajax UpdateProgress and put your code in UpdatePanel as to disable Button after first click:
<aspAtlas:UpdateProgress ID="upUpdatePanelProgress" runat="server" DisplayAfter="0"
DynamicLayout="true" AssociatedUpdatePanelID="updpnlProgram">
<ProgressTemplate>
<asp:Panel ID="Panel1" CssClass="overlay" runat="server">
<img runat="server" id="img1" src="../Images/UpdateProgress.gif" alt="Loading..." /><br />
<br />
<b>Loading...</b>
</asp:Panel>
</ProgressTemplate>
</aspAtlas:UpdateProgress>
<aspAtlas:UpdatePanel runat="server" ID="updpnlProgram" UpdateMode="Conditional">
<ContentTemplate>
<div>
//--Your code in this div
</div>
</ContentTemplate>
<Triggers>
<aspAtlas:PostBackTrigger ControlID="Button_ID" />
</Triggers>
</aspAtlas:UpdatePanel>
Hi
While working on asp, i want if i click on my asp text field, a radio button should be checked, but i dont find any onClick event available for asp text field, and if i use onchange, it is from the server end, i want this situation without page refresh, just like we do in html fields using javascript, please help!!!
Try this one:
HTML:
<asp:TextBox ID="txtSelect" runat="server" Width="200px" Text="Click here"> </asp:TextBox>
<br />
<asp:RadioButton ID="radCheck" runat="server" />
JQUERY:
$("#txtSelect").click(function(){
$("#radCheck").attr("checked",true);
});
OnFocus is probably the event I would use.
You can use Ajax if you don't wanna refresh the page