OnClIck in Javascript Not Working For Image - javascript

I have OnClick Function and On ClientClick Function as
<asp:ImageButton ID="imgbtnSchedule" runat="server" ClientIDMode="Static" ImageUrl="~/images/Update2.png" ToolTip="Refresh" OnClick="imgbtnSchedule_Click" OnClientClick="return validateUpdate(1);" />
My OnClick Function Is Not Working so I Started Debugging using F12. but Here I can see my OnClick function Is Not there and Onclientclick property is showing as OnClick.


I have Onlick Function On Server side and An OnClientClick Function On
client side,I am expecting Ececution Of both OnClick and
OnClientClick,How To Achive this
base on that code
<asp:ImageButton ID="imgbtnSchedule" runat="server" ClientIDMode="Static" ImageUrl="~/images/Update2.png" ToolTip="Refresh"
OnClick="imgbtnSchedule_Click"
OnClientClick="return validateUpdate(1);" />
If the validateUpdate(1) returns false, then the imgbtnSchedule_Click will not called.

Related

Calling OnClientClick from Code behind in Asp.net VB

I have code like this :
<asp:LinkButton runat="server" ID="HL_KonfirmasiPemesanan" class="button-primary button-shadow" causesvalidation="false" validationgroup="ValidasiData" OnClientClick="return getConfirmation(this);" ></asp:LinkButton>
Then I want call OnClientClick="return getConfirmation(this);" in code behind, I tried:
HL_KonfirmasiPemesanan.Attributes.Add("OnClientClick", "return getConfirmation(this);")
but it doesn't work, how can I do that?

You can do this:
dim script as String = "<script>var btn = document.querySelector('.button-primary'); getConfirmation(btn);</script>"
ClientScript.RegisterStartupScript(Me.GetType(), "click_Btn", script)

Trigger c# Event from JavaScript Function

I'm trying to call c# event from javascript function. I tried this:
<script type="text/javascript">
function LikeClick() {
document.getElementById('<%=Helper.ClientID %>').click();
}
</script>
<asp:Button ID="Helper" runat="server" OnClick="Helper_Click" />
But it doesn't trigger the c# event.

I believe a <asp:Button> will natively post the form back without a client side event handler. You need a control that does not natively post back but instead uses a client side click handler to call the __doPostBack() function.
Change
<asp:Button ID="Helper" runat="server" OnClick="Helper_Click" />
to this
<asp:LinkButton ID="Helper" runat="server" OnClick="Helper_Click" />

Unable to call Javascript function onload a asp:button using ASP.NET4

I am unable to call a Javascript function on the OnLoad event of a asp:button
HTML
<asp:Button ID="btnFromCalOpen" runat="server" Text=" > " onLoad = "AllHide()" OnClientClick ="ShowCal()" />
Javascript
function AllHide() {
alert("Hello");
}
Please Help

You will need to use JavaScript to toggle styles like you are trying
<asp:Button ID="btnFromCalOpen" runat="server" Text="" OnClientClick ="ShowCal()" style="display:none;visiblity:hidden;" />
Original Comment You can't do onLoad with JavaScript for any button. What are you hoping to accomplish? We can help figure out that solution.

You can do it at the page level. The page has a javascript onload event.

You can't do that.
Here's why. The OnLoad event in ASP.NET for a control is fired while the server is building the page (on the web server), but before it sends it to the browser (running on the user's machine).
Code on the web server can't directly call code on the browser computer (which hasn't even got the page yet).
If you just want to hide the control, just do this in your markup:
<asp:Button ID="btnFromCalOpen" runat="server" Text=" > " visible="false" OnClientClick ="ShowCal()" />
Another approach (hidden control doesn't takes up space):
<asp:Button ID="btnFromCalOpen" runat="server" Text=" > " style="display:none;" OnClientClick ="ShowCal()" />
Another approach (hidden control takes up space)
<asp:Button ID="btnFromCalOpen" runat="server" Text=" > " style="visibility:hidden;" OnClientClick ="ShowCal()" />

onclick and onclientclick

I have the following line in asp.net
<asp:LinkButton runat="server" ID="createuser"
OnClientClick="javascript:$('#dialogform').dialog('open');"
onclick="AddCaseInfo_Click">Create Case</asp:LinkButton>
onclientclick works fine, but not onclick. I tried
OnClientClick="javascript:$('#dialogform').dialog('open');return true;"
or
OnClientClick="javascript: return $('#dialogform').dialog('open');"
...but it still doesnt work.
:( Any help please?

You shouldn't have to specify javascript: or return true:
OnClientClick="$('#dialogform').dialog('open');"

asp button and history back onclientclick

hi I have an asp button which is created using the following code:
<asp:Button ID="btnBack" OnClientClick='javascript:history.back()' runat="server" Text="back">
</asp:Button>
However, now the javascript doesn't work to go a history back. On the other hand, if I make an alert() it works...why. Why is it not working to go a history back?

Try with return false at end:
<asp:button id="btnBack" runat="server" text="Back"
OnClientClick="JavaScript: window.history.back(1); return false;"></asp:button>

Try:
parent.history.back();
Or
history.go(-1)

Had the same problem in DevExpress project. Using ASPxButton without initializing the property "AutoPostBack" will result in redirect to self page before any client-side function call.
Try AutoPostBack="false" for the button.

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