I have an asp:textbox
<asp:textbox ID="NewName" runat="server" />
and when a user clicks the "Cancel" button, I want to erase whatever is in that text box by making the value just be "". If it were a an input field of type text, I could just do this in javascript:
document.getElementById('NewName').value= "";
But I can't just do this because it is an asp:textbox.
When your asp:textbox is rendered to the UI, then yes, it is just an input field of type text. The only part that may be an issue is the ID, but that can be set using ClientIDMode:
<asp:textbox ID="NewName" runat="server" ClientIDMode="Static" />
renders to:
<input type="text" id="NewName" />
and thus the JavaScript you use should work perfectly.
<asp:TextBox> renders to an <input type="text"> which you can use as you would, the only complication is the id="" attribute is rewritten, but you can do this:
document.getElementById("<%= NewName.ClientID %>").value = "";
Assuming that this script is in the same page as the textbox. If this is in a referenced <script src=""> then you'll need to use a global script variable of the element's ID.
Try setting the textbox's ClientIDMode to Static
That way the javascript should be able to find them with the same ID as in ASPX.
Here a whole test page
<%# Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"
CodeFile="Default.aspx.cs" Inherits="_Default" %>
<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
<script type="text/javascript">
function ClearTB1() {
document.getElementById("TextBox1").value="";
}
</script>
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<p>
<asp:TextBox ID="TextBox1" runat="server" Text="test" ClientIDMode="Static"></asp:TextBox><br />
<asp:TextBox ID="TextBox2" runat="server" Text="test" ClientIDMode="Static"></asp:TextBox><br>
<asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="ClearTB1()"
CausesValidation="False" UseSubmitBehavior="False" /><br />
</p>
</asp:Content>
I had the same problem. I solved it once I remembered there is a mangling going on with asp.net on the Ids.
within my aspx, i had:
<input type="text" id="sessSubs"/>
further down, within a gridview (hence the use of "class" instead of "id"), i had a column which had an asp:TextBox:
<asp:TextBox runat="server" class="paid" />
once i recalled the id mangling issue, it was just a case of changing the way i referenced the textbox:
<script type="text/javascript">
$(document).ready(function() {
function updateSubs()
{
var sub = parseFloat($('[id$=sessSubs]').val());
$('.paid').val(sub);
}
$(document).on('change, keyup', '[id$=sessSubs]', updateSubs);
});
</script>
Related
I was trying to use a calendar extender but for some reasons it not working?
Just put a simple TextBox and CalendarExtender, when I click inside the textbox it supposed to be popup the calendar, but I got nothing.
On the other hand, I tried the ConfirmButtonExteder and it work fine.
I don't know if something wrong, maybe I missing something in web.config? but why the ConfirmButtonExtender works?
I use VS 2012, ASP.NET C#, .NET Framework 4.5, Ajax toolkit 4.1.7.725 (latest one from official website) then Install the Ajaxtoolkit it from Nuget (version 4.5...) but still samething, the calendar is not popup, the confirmbuttonextender works just fine. I dont know why?
Here my code:
<%# Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>
<asp:Content ID="Content1" runat="server" ContentPlaceHolderID="MainContent">
<p>
<ajaxToolkit:ToolkitScriptManager runat="server" ID="ScriptManager1" /
<asp:Button ID="Button1" runat="server" Text="Button" />
<ajaxToolkit:ConfirmButtonExtender ID="ConfirmButtonExtender1" runat="server" TargetControlID="Button1"></ajaxToolkit:ConfirmButtonExtender>
<br />
<asp:TextBox runat="server" ID="Date1"/>
<br />
<ajaxToolkit:CalendarExtender ID="defaultCalendarExtender" runat="server" TargetControlID="Date1" />
</p>
</asp:Content>
Here's what you can do:
Check that AjaxControlToolkit.dll and AjaxControlToolkit.pdb are in your Bin Folder.
Place the assembly
<%# Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %> above the page.
Make sure the ScriptManager is below the BodyContent of ContentPlaceHolder
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
Double-Check the TagPrefix and the TargetControlID of the CalendarExtender
<cc1:CalendarExtender ID="CalendarExtender1" runat="server" TargetControlID="TextBox1">
I am using JQuery for autocompleting the search textbox with my database. The problem rises when I want to access the text of the search textbox in query string since I am using html textbox. To make it in context, either I have to use runat="server" or I can use asp:Textbox but in both the cases my autocompleting feature stops working.
Here is the aspx code:
<div id="search-location-wrapper">
<input type="text" id="txtSearch" class="autosuggest" />
<div id="search-submit-container">
<asp:Button ID="btnSearch" runat="server" Text="Search"
onclick="btnSearch_Click"></asp:Button>
</div>
</div>
C# Code:
protected void btnSearch_Click(object sender, EventArgs e)
{
string location = txtSearch.ToString(); /*Here is the error: txtSearch is not in current context */
int id = Convert.ToInt32(ddlCategory.SelectedValue);
string url = "SearchResults.aspx?Id="+id+"&location="+location;
Response.Redirect(url);
}
Your problem is likely just that ASP.NET is changing the ID of your textbox when you put the runat="server" on it. Your jQuery probably has something like:
$("#txtSearch")
Instead, add the runat="server" to your textbox and then change it to:
$("#<%= txtSearch.ClientID %>")
When the page renders, it will put the correct ID in for the textbox.
you can use asp:Textbox without stoping jquery:
ASP:
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
jQuery selector :
$("#TextBox1")
if you have a masterpage or a gridview you can get your element client id by using Inspect Element in your browser..
ASP:
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</asp:Content>
jQuery selector :
$("#ContentPlaceHolder1_TextBox1")
I've got an issue with a messagebox user control. I wish for a control which can be given a message and the user can dismiss with a click of a button, which can be inserted into many places.
I have applied the javascript into the messagebox control in a hope i can keep everything to do with the messagebox centralized, however when browsing to a page with the messagebox control added i get this error:
CS1061: 'ASP.components_messagebox_ascx' does not contain a definition for 'HideBox' and no extension method 'HideBox' accepting a first argument of type 'ASP.components_messagebox_ascx' could be found
The control is as thus:
<%# Control Language="C#" AutoEventWireup="true" CodeBehind="Messagebox.ascx.cs" Inherits="FosterNetwork.Components.Messagebox" %>
<script type="text/Javascript">
function HideBox() {
document.getElementById("PNL_Messagebox").setAttribute("visible", false);
}
</script>
<asp:Panel ID="PNL_Messagebox" runat="server">
<asp:Label ID="LBL_Message" runat="server" />
<asp:Button ID="BTN_Ok" Text="Ok" OnClick="HideBox()" runat="server" /> <!--Error happens on this line-->
</asp:Panel>
I'm fairly certain i've done this right but obviously i've done something wrong if it's not working. Any light on the situation at all would be grand.
Addendum: If i comment out the Button control the page loads fine, and the script loads fine too (Viewed page source)
The control ID's you're referencing are not the client ID's, but server ID's. So retrieve the 'ClientID' from the control in the JavaScript function and second, use the 'OnClientClick' property to show the JavaScript message.
<%# Control Language="C#" AutoEventWireup="true" CodeBehind="Messagebox.ascx.cs" Inherits="FosterNetwork.Components.Messagebox" %>
<script type="text/Javascript">
function HideBox() {
document.getElementById("<%= PNL_Messagebox.ClientID %>").setAttribute("visible", false);
}
</script>
<asp:Panel ID="PNL_Messagebox" runat="server">
<asp:Label ID="LBL_Message" runat="server" />
<asp:Button ID="BTN_Ok" Text="Ok" OnClientClick="HideBox()" runat="server" /> <!--Error happens on this line-->
</asp:Panel>
Onclick looks for a server side function, and not javascript. either, define your button as <input type='button' onclick='HideBox' or change the current code to:
<script type="text/Javascript">
function HideBox() {
document.getElementById("<%= PNL_Messagebox.ClientID %>").setAttribute("visible", false);
return false;
}
</script>
<asp:Button ID="BTN_Ok" Text="Ok" OnClientClick="return HideBox()" runat="server" />
returning false in OnClientClick, prevents the asp button from postback.
Edit: as Monty mentioned, your panel control's client id is not correctly set in your code.
I am NEW in jQuery and I am using Visual Studio 2010 ASP.NET Pages Tabs for now. In the first (Start) page User have to enter information to access other tabs. If User has not entered any info I want to show some kind of alert mesg that displays: Please Enter your Info.
What I did is that I implemented MessageBox.Show() using System.Windows.Forms, but that is not gonna work if I am publishing the webpage. How should I do it with jQuery Dialog Box Plugin?
I have something like this:
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<script type="text/javascript">
$(function () {
$("#dialog").dialog();
});
</script>
Welcome! Please provide your Number to complete your application:
<asp:TextBox ID="txtSSN" runat="server" TextMode="Password" </asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
ControlToValidate="txtSSN" ErrorMessage="*"></asp:RequiredFieldValidator>
<asp:Button ID="btnSubmit" runat="server" onclick="btnSubmit_Click"
Text="Submit" />
<div id="dialog" style="display: none; ">
<p>Please Enter Your Credentials First!</p>
</div>
</asp:Content>
You can use the ValidationSummary control with option ShowMessageBox="True". Something like:
<asp:ValidationSummary ID="ValidationSummary1" runat="server" HeaderText="The following are required:" ShowMessageBox="True" ShowSummary="False" />
Let me know if you do not find a tutorial on how to use it.
I have a component in my application that show in my aspx page a x nurmbers of imagens get from my datasource of a repeater. I want to create a button and make this button print this images. I'd tried window.print() in my aspx, but it's only print the HTML information.
as far as i know,
u can't print directly to the printer.
u need to show the separate window with only img surrounded with div tag.
here is the eample:
<%# Page Language="C#" MasterPageFile="~/MasterPage2.master" AutoEventWireup="true" CodeFile="PrintImage.aspx.cs" Inherits="PrintImage" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" Runat="Server">
<script language="javascript" type="text/javascript">
function PrintImage()
{
printWindow = window.open ("", "mywindow", "location=1,status=1,scrollbars=1,width=600,height=600");
printWindow.document.write("<div style='width:100%;'>");
printWindow.document.write("<img id='img' src='" + document.getElementById('ctl00_MainContent_ImgMyPhoto').src + "'/>");
printWindow.document.write("</div>");
printWindow.document.close();
printWindow.print();
}
</script>
<div>
<asp:Image ID="ImgMyPhoto" runat="server" Width="100px" Height="90px" />
<br />
<input type="button" id="btnPrint" value="Print Image" onclick="PrintImage()" />
</div>
</asp:Content>
ref: this coding is get from Thirumalai_pm
Hope it works!