i have asp button like this:
<asp:Button ID="ImportToDB" runat="server" OnClick="ImportToDB_Click" />
And i need to call a javascript function when mouseover on this button. So i have in page_load():
ImportToDB.Attributes.Add("onmouseover","javascript:OnButtonMove(" + ImportToDB.ClientID + ")");
javascript function:
<script language="JavaScript" type="text/javascript">
function OnButtonMove(id) {
//something
}
</script>
Everithing work fine only if button is enabled. but when i disable button, this javascript function will never fire.
what i am trying to do: I have button and when is something wrong i just disable it. And when user mouseover this(disable) button, I show him DIV with a message.
Can someone tell me why i cannot call this JS function while button is disabled?
If the event is never fired when the button is disabled, you could put the button in a <div> and add the event handler to this instead. Then check if the button is disabled inside your javascript function.
When this button is disabled it can't be accessed from client side javascript only by server side code (post back), a work around to achieve this by client-side way is to use a div control above this button as Graham Clark says like this
<div onmouseover="javascript:OnButtonMove(this.children[0].id)">
<asp:Button ID="ImportToDB" runat="server" Text="test" Enabled="false" />
</div>
Related
im trying to hide div by clicking the button, but it does hide it for a second and return the div (looks like it refreshing page).here is my html code :
<div id="page">
<p>First Paragraph</p>
<p>Second Paragraph</p>
<p>Yet one more Paragraph</p>
<asp:Button ID="Button1" runat="server" Text="Button" />
</div>
and here is my jquery code:
$(document).ready(function () {
$("#Button1").click(function () {
$("#page").hide();
});
});
What Rick said in his answer AND you need to add Type="Button" to your button.
<Button ID="Button1" type="button">Button</button>
The default button type is submit, which will cause the page refresh. AND, as Rick mentioned, ASP buttons will also submit. So, you need to use an HTML button and set the type="button" attribute.
From MDN
The type of the button. Possible values are:
submit: The button submits the form data to the server. This is the default if the attribute is not specified, or if the attribute
is dynamically changed to an empty or invalid value.
reset: The button resets all the controls to their initial values.
button: The button has no default behavior. It can have client-side scripts associated with the element's events, which are
triggered when the events occur.
An ASP Button with runat="server" causes a server post-back. If you aren't going to be acting on that click from the server, just use a client-side button like:
<button id="Button1" type="button">Button</button>
Set the client id mode to static on the button, then it'll work. It's not working because that hasn't been specified so the name is changing.
<asp:Button ID="Button1" ClientIDMode ="Static" runat="server" Text="Button" />
If you wanted to disable the postback to simply hide something without processing anything, then just using a client side button is the best option.
I have an asp wizard on my page with three steps.
<asp:Wizard ID="wizardBestellen" runat="server" ActiveStepIndex="0" DisplaySideBar="False" onfinishbuttonclick="wizard_NextButtonClick" onnextbuttonclick="wizard_NextButtonClick" onpreviousbuttonclick="wizard_PreviousButtonClick">
<StartNavigationTemplate></StartNavigationTemplate>
<StepNavigationTemplate></StepNavigationTemplate>
<FinishNavigationTemplate></FinishNavigationTemplate>
<WizardSteps>
<asp:WizardStep runat="server" ID="step1" StepType="Start">
<uc1:control ID="uc1" runat="server" />
</asp:WizardStep>
<asp:WizardStep runat="server"ID="step2" StepType="Step">
<uc2:control ID="uc2" runat="server" />
</asp:WizardStep>
<asp:WizardStep ID="step3" runat="server" StepType="Finish">
<uc3:control ID="uc3" runat="server" />
</asp:WizardStep>
</WizardSteps>
</asp:Wizard>
Now every control has a next and a previous button which after the click validates your data and sends you to the next step. The buttons all look like:
<asp:LinkButton ID="bntPrevious" runat="server" CommandName="MovePrevious" CssClass="buttonOrange" CausesValidation="false"><span>Previous</span></asp:LinkButton>
<asp:LinkButton ID="btnNext" runat="server" CommandName="MoveNext" CssClass="buttonOrange" CausesValidation="true"><span>Next</span></asp:LinkButton>
So far it all works perfectly..
Now i wanted to disable the buttons after clicking on it and show a div with a loader image. So i created a div named divLoader and a javascript function which hides the div the buttons are in and shows the div with the loader.
function ToggleDiv(divButton, divLabel)
{
if (divButton.style.display == 'block')
{
divButton.style.display = 'none';
divLabel.style.display = 'block';
}
else
{
divButton.style.display = 'block';
divLabel.style.display = 'none';
}
}
But i can't get this to work. The ToggleDiv function works great in another situation, so thats not the problem.
I've tried calling the function from the OnClick attribute in the linkbutton but this gave me an error. I tried the OnClientClick, but this didn't work and i also tried setting the onclick attribute in the code behind, this also was a dead end.
Can anybody explain to me what i am doing wrong or is there another way to prevent users clicking the button twice?
Sounds like you're not getting the binding to work.
The first thing I would do is check the emitted control IDs by doing a view-source. Some implementation of the .NET framework add extra fluff to these control IDs, so can't guarantee that it will be the same as appears on the form.
Next, I would try some JavaScript late binding. If you have a JavaScript file, put it there. If not create one or add a JavaScript block to the foot of your form (create a new file for preference).
All this would be much easier with a JAvaScript lbrary such as jQuery, but for the moment lets assume you don't have one.
Add a window onload event handler
window.onload = function(){
//code to go here
}
Now add the click binding for your button:
window.onload = function(){
document.getElementById("***YOUR BUTTON ID***").onclick = function(){
ToggleDiv(this, document.getElementById("***YOUR LABEL ID***"));
}
}
I said this would be a little easer with jQuery, well, this is the equivalent implementation:
$(document).ready(function(){
$("#***YOUR BUTTON ID***").click(function(){
$(this).toggle();
$("#***YOUR LABEL ID***")).toggle();
});
});
The above sample removes the need for your ToggleDiv function entirely.
I've got a DIV which contains some text in it.
Ive also got an asp:Button, which when pressed I would like to retrieve this text. However, it appears that as soon as I press the button, the DIV's contents is reset - most likely due to postback.
The DIV has got runat=server". Does anyone have any idea as to what may be done to make this DIV retain its contents on pressing the button? The data is manipulated countless times before the button is pressed, so I would like to try avoiding updating a Session every time.
Try something like this:
getText = function(){
alert($("#<%=Panel1.ClientID%>").text());
return false;
}
<asp:Panel ID="Panel1" runat="server">
</asp:Panel>
<asp:Button ID="Button1" runat="server" OnClientClick="return getText();" ... />
You can also try this:
$("#<%=Button1.ClientID%>").click(function(){
alert($("#div1").text());
return false;
});
One way would be grabbing button click event in your makrkup, store your DIV content in a hidden field, then fire postback manually in your button click.
Try using an asp:Panel. It renders as a DIV and you have access to all of its properties at all points in the page life cycle.
another way is to use Ajax. specifically - updatepanel control
You can store you DIV content in a hidden field by calling a JavaScript function in onClientClick event of the button - it will execute just before OnClick event, before postback. This way, there's no need to fire postback manually.
Let's say you have one div, one hidden field and button with onClientClick and OnClick events. You use simple JavaScript function for the job:
<div id="myDiv" runat="server" ></div>
<asp:Button ID="btnGetDiv" runat="server" Text="Get div value" OnClick="getValueOnServer" OnClientClick="setHiddenFieldF()"/>
<asp:HiddenField ID="hf" runat="server" />
<script type="text/javascript">
function setHiddenFieldF() {
var nevValue = document.getElementById('<%= myDiv.ClientID %>').innerHTML;
document.getElementById('<%= hf.ClientID %>').value = nevValue;
}
</script>
Then, on the server, just use the value of the hidden field.
You can't read your DIV's content because it is not send to the server in the postback. Only values of form elements (<input>, <textarea>, <select>, etc.) are send.
If you really want to read DIV's content, you can copy it to the hidden input (as wrote Kavousi).
Just add hidden field to your page:
<asp:HiddenField ID="hidden" runat="server" />
And then in code behind:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Page.Form.Attributes["onsubmit"] = string.Format(#"$(""#{0}"").val($(""#{1}"").html());", hidden.ClientID, div.ClientID);
}
}
(div is your div's name).
You can then read div's content by reading hidden.Value.
I have a simple ASP.NET Button inside of iFrame, for strange reason i have to click it twice in order to fire an event.
<asp:Button ID="btnSaveComment" runat="server" Text="Add Comment"
CssClass="button"
OnClick="btnSaveComment_Click"
ValidationGroup="add" />
protected void btnSaveComment_Click(object sender, EventArgs e)
{
AddComment();
}
I suspect that when you initially click an area above the button you're giving focus to the iframe (that is to say, the page within it), and on the second click the mouse can interact with the button.
On the other hand, if the page seems to be posting back but not actually doing anything until the second click, then it might well be related to the page lifecycle, as suggested in an answer comments by #AndroidHustle.
Edit:
To test the theory of whether or not the frame is focused, try giving it focus via script. Something like the following might help:
<script type="text/javascript">
document.getElementById("iFrameId").focus();
</script>
I had the same problem. Here is how I solved it:
$("#MainContent_Button1").hover(function (event) {
$("#MainContent_Button1").click()
});
Now it only takes 1 click, and the button functions like it's supposed to.
<asp:Button ID="Button1" runat="server" Text="Save Payment Plan" OnClick="Button1_Click" />
I have two asp.net buttons inside a template (Expand and Collapse)
I want to implement a simple client side javascript function to hide the expand button after press it and show the collapse button and vice versa.
<asp:Button ID="btnExpand" runat="server" CommandName="Expand"
CommandArgument='<%# Container.DataElement("Id")%>' Text="+" />
<asp:Button ID="btnCollapse" runat="server" CommandName="Collapse"
CommandArgument='<%# Container.DataElement("Id")%>' Text="-" />
I tried OnClientClick event but I didn't know how to get the sender button and the second button from javascipt because they're in a template and their IDs will be generated.
I tried also to change their visibility from the code behind in the server (by Visible property) but the problems is the event handler will be fired after the postback and the changes will not be applied in the client.
Any help !!
sorry if the question is silly, I'm new in the web development.
Thanks in advance.
Use ClientID like:
<!-- Supposing you have the following button control -->
<asp:button id="myButton" runat="server" />
<script type="text/javascript">
var theID = '<%= myButton.ClientID %>';
// Now do whatever you like with it.
</script>
Be careful where you place that code. You need to make sure that the html client renderer has finished creating that item.
In the function where you are implementing the hide and show template, put $("#buttonID").hide();.