Web Forms :: Differences Between Onclick Event And Oncommand Event?

Oct 13, 2010

what're the differences between onclick event and oncommand event?

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Similar Messages:

VS 2005 Imagebutton In Gridview Header Onclick Or Oncommand Event Not Firing

Mar 4, 2010

I have a gridview which is bound to a dataset. I have placed several template fields in the grid with the following type of setup

HTML Code:
<asp:Label ID="Label1" runat="server" Text="File"></asp:Label>
<asp:ImageButton AlternateText="ASC" ID="imgASC" Width="10" Height="10"
CommandArgument="eFolder ASC" runat="server" OnCommand="ImageButton_Command" />
<asp:ImageButton AlternateText="DESC" ID="imgDESC" Width="10" Height="10"
CommandArgument="eFile DESC" runat="server" OnCommand="ImageButton_Command" />
<asp:Label ID="Label1" runat="server" Text='<%# Eval("eFileName") %>'></asp:Label>

on the code page I have mapped the OnCommand event to the following code


Protected Sub ImageButton_Command(ByVal sender As Object, _
ByVal e As System.Web.UI.WebControls.CommandEventArgs)
Dim img As ImageButton = CType(sender, ImageButton)
img.BorderStyle = BorderStyle.Ridge
SortOrder = e.CommandArgument
Catch exc As Exception
ProcessModuleLoadException(Me, exc)
End Try
End Sub

My problem is that by clicking on the image button in the gridview header, the OnCommand event is not being fired. I have tried this with both OnClick and OnCommand and neither fires. I can't see what I am doing wrong if anything.

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C# - Stop Setting Onclick Event For LinkButton If No OnClick Event Was Explicitly Defined?

Feb 25, 2010

How do I setup a default setting so that if I do not set an OnClick (i.e the asp.net OnClick attribute) explicitly for an asp:LinkButton tag, it will not render an onclick(html attribute for javascript) attribute client side? By default, asp.net adds an onclick='doPostBack....' for the LinkButton.

Case for use:

There is a LinkButton tag on the page. For this page, if the user has one friend, I only want to run client side code if the button is clicked and would not for any reason want to make a post back. If the user has more than one friend I would want a click to trigger a postback.

Using any asp.net Ajaxtoolkit

Dynamically switching the control type (i.e. if friends == 1 use a asp:Hyperlink)

-I want to avoid this because it is not scalable. There might be many cases where I want an asp:Link tag to do a postback or to not do a postback depending on the user context or user attributes Using OnClientClick (I am using jQuery would like to avoid this)

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Web Forms :: How To Add An Event To The Asp.net Table Control At Runtime ...onclick Event

Jan 28, 2010

well i have already created the rows and cells dynamically using asp.net table control ...but how to add an onclick event on that ...so that i could retrieve the corresponding cell when a particular row is clicked ...if it was a html control ,i could have used javascript but in this particular case m unable to find any solution..

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Web Forms :: Transfer Event OnClick?

May 28, 2010

have a user control that has a data repeater. When the ItemDataBound even is raised I create a html table which contains a button on each row. The button is created in a seperate class, not in the code behind, so when I attach the button click event I have to put the click method in the class that creates the control. However, when the button is clicked I need to open a modal form in the page that contains the button. How can I move the event back to the web user control with the sender object? I suspect I need to do something with a delegate or something, but I am having a hard time putting how to do that together. Can someone tell me how to do this?

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Web Forms :: How To Handle OnClick Event

Apr 29, 2010

I am having a treeview with nodes of products populated on first time through xmlresponse.Onselectednodechanged event, I have performed xmlseriaization to build a request to get list of subproducts. Now, my issue is how do I handle the next On_click event requesting for items under subproducts which will inturn calls the same onselectednodechanged method and how do I write condition to skip above steps to occur, since I need to build a different request on click of subproducts asking for items.

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Web Forms :: Listbox Event For OnClick?

May 18, 2010

I am trying to define an event on a listbox to allow users to click on a specific item and do processing on the event. I've tried the obvious OnClick and OnSelectedIndexChange events which are not part of the listbox collection of events.

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Web Forms :: OnClick Event Within ItemTemplate?

Jun 1, 2010

I have an XML file that contains a list of training videos that our site offers. I'm using a DevExpress control called DataView and within the ItemTemplate I bind all the appropriate information. However, I have an ImageButton that I bind a downloadVideo(string fileName) function to the OnClick event. When I click on the image the function does not fire though. Can anyone see what I'm doing wrong?



When I view the source of the page the OnClick event reads OnClick=downloadVideo(fileName.mp4) .

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Web Forms :: How To Call An Onclick Event In C

Jul 23, 2010

what i have is a form and when i click on a icon then in javascript it pops up a window with data bound to a grid. Now on that form if i hit tab in a particular text box how can i call that same window ( ie just call the javascript onclick event and pass the text in the text box) ?

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Web Forms :: How To Create OnClick Event For The Button

Dec 7, 2010

I have user control that have button in it. I want to create OnClick event for the button on aspx page that have that control.

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Web Forms :: Button OnClick Event Not Working?

Oct 2, 2010

I am having trouble with two buttons on a page. I dragged them on to the page and then double- clicked each of them in order to create the OnClick events.

I added my code to the events, but when I click the buttons, their respective events aren't being called.

My .aspx code:


My Code behind:


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Web Forms :: Button Onclick Event Works Only Once?

Oct 7, 2010

i have a problem with some part of an applcation am developing, i have a button that works the first time its clicked and then does not work after that. There is a visible page post back, but the code is not executed. I want the a label on a page get a new value whenever the button is clicked.

Sub Button_Next_Click(ByVal sender As Object, ByVal e As System.EventArgs) x = Integer.Parse(Label_previous.Text) x = x + 1 Label_previous.Text = x End Sub
<asp:Button ID="Button_Next" runat="server" Text="1" Width="65px" onclick="Button_Next_Click" />

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Web Forms :: Create OnClick Event For A Button?

Jan 28, 2010

I have a button that I cannot see or click in design view in VS but I can locate it in my source. The reason I cannot see it is because it is overshadowed by a panel that has a repeater in it. I am trying to create an onclick event for it. The way I normally do this is just double click on the button or click on it and click the small lightning bolt in properties and double click the Click event for the button. This time I cannot do that.

So, I tried to create an on click event by doing this:

<asp:button ID="btnAdd" OnClick="btnAdd_Click" runat="server"/>

I then went to my .cs file and created a tidbit of code like:

protected void btnAdd_Click(object sender, EventArgs e)
txtEFINrehang.Text = "";

However my button does not work... Its a very simple objective for my button, just adding a textbox value to a lstBox and I know its correct, so I know my code isnt broken. I just cannot get that button to fire correctly.

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Web Forms :: Onclick Event For Aspbutton Not Working?

Jan 19, 2011

I have an asp button on my form which has attribute as

runat="server" ImageUrl="images/Search1.gif"


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Web Forms :: Button OnClick Event - Error Application

Sep 13, 2010

I have a placeholder and in there a button that is set as enable false and on certain conditions it become enabled.On page load I get all info in the panel. So far so good. Now If I added Onclick="btn1_click" in aspx page and got application error. I need to pass some info to next page on button click event.

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Web Forms ::.trying To Get A String Into A Onclick Event On An Input Button?

Apr 15, 2010

I'm having problems with trying to get a string into a onclick event on an input button. Ill paste my code and explain more...


But i cant do that as the code is in an aspx page, not an aspx.cs page. I tried doing it this way...


But for some reason, when i try it that way, the page refreshes after the button is clicked and it messes up the layout of my page.

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Forms Data Controls :: Add An OnClick Event To A Hyperlink

May 23, 2010

I have been trying to add and OnClick event to a Hyperlink. The problem is in both FindControl, they are not populating the hl and reportId variables. I have added the following to the RowDataBound method.


When clicked the client side addUsage OnClick event will pass the the variables to a Generic Handler as parameters.

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Web Forms :: Clicking On Hyperperlink To Do Some Code Behind Using An Onclick Event?

Oct 28, 2010

is there a way after clicking on hyperperlink to do some code behind using an onclick event?

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Web Forms :: Attributes.Add() Onclick Event Disappearing After Postback?

Mar 29, 2010

- I've created a Survey with multiple sections in it

- The answer types are variable and, thus, the controls are created dynamically

- I have a Repeater where each RepeaterItem corresponds to a Category. (I have 5 categories in my current test, so I have 5 DataItems in the Repeater) Each RepeaterItem contains another Repeater which will hold the Question / Answer values

- After I data bind the Category Repeater, I loop through each RepeaterItem, find the Repeater contained in each RepeaterItem, and DataBind() this second Repeater to a list of Questions

- After DataBinding the Repeater containing the Questions, I sent that Repeater object to another routine, which is where the Answer controls are dynamically created and added to a Panel inside each of this Repeater's RepeaterItems.

I am able to navigate back-and-forth among Categories, save / delete answers, and fill in answers for Surveys that were left incomplete when a user logs back in.

One of the the potential control types for an answer is a ComboBoxList.

Each Question has an option for answers that require a ComboBoxList called "MaxAnswers." When this value > 0, I inject a little javascript that prevents the user from selecting more boxes than the "MaxAnswers" value. This is done during the last step described above like so:


This appears to always be added regardless of how many questions I answer or don't answer or how many times or directions I navigate around inside the survey. (I can push "Back" and "Previous" buttons as well as jump directly to any individual category by clicking a LinkButton)

Another option for Questions requiring a CheckBoxList is to specify if the selection of a specific ListItem within the CheckBoxList should display a TextBox. (e.g. a selection of "Other" will display a TextBox for the user to write-in an answer) I want to prevent a post-back just to show/hide a TextBox, so I inject an onclick event attached to the specific ListItem to accomplish this. The following code appears as the very next routine following the code pasted above:


This also works the first time the page is loaded but not after any PostBacks...

The lblMessage.Text lines are written to the page after ever PostBack, the MaxAnswers routine correctly adds the onclick event to the necessary CheckBoxList controls, but the "fncShowFTB" event is not added. Viewing the HTML with Firebug does show the onclick the first time the page is loaded, but it's missing after every subsequent postback.

Can anyone see what I am doing wrong that causes me to lose this event?

The Firebug HTML on initial page load looks like:

<input type="checkbox" onclick="fncShowFTB(this,'FTB50');" name="dnn$ctr556$View$rptCategoryPanels$ctl02$rptQuestions$ctl11$ctl00$6" id="dnn_ctr556_View_rptCategoryPanels_ctl02_rptQuestions_ctl11_ctl00_6">

After PostBacks, it looks exactly the same except that the onlick event is missing.

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Web Forms :: How To Set OnClick Event For Dynamic Created Button

Mar 10, 2010

What I'm trying to accomplish is to set my dynamically created button with a onClick command so when click it will run a method in the code behind.


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Forms Data Controls :: OnClick Event Is Not Firing?

May 6, 2010

The <ItemTemplate> loads properly, and the line:

<asp:LinkButton ID="generalcomments" OnClick="SetPage_N_of_All" runat="server" PostBackUrl=<%#DataBinder.Eval(Container.DataItem, "Filename")%>> <%#DataBinder.Eval(Container.DataItem, "Title")%></asp:LinkButton>

loads the page correctly, BUT it does not fire the onClick event (OnClick="SetPage_N_of_All").

The method SetPage_N_of_All is in the codebehind page and is as follows:

public void SetPage_N_of_All(object sender, EventArgs e)
ContentPlaceHolder mpContentPlaceHolder;
TextBox mpTextBox;
mpTextBox = (TextBox)this.Master.FindControl("page_N_of_All.Text");
mpTextBox.Text = RobertBurns.DPM_Current.page_N_of_All;


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Forms Data Controls :: Add OnClick Event To Footer?

Mar 16, 2010

ow can I add onClick event javascript to gridView Footer ?Inside footer I have page link, I must add onClick event Maybe with gridView_RowCreated ?

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Web Forms :: Onclick And Lost Focus Event For Testbox?

Mar 8, 2011

i put a default value to a text box and as soon as some one clicked on the text box the value dissappers and the the user can type in his on value

and if for some reason the user did not add any value in to it and when the text box looses focus the old value has to come back

I know there is no on click event and it has to be server side because i have to do some checking to do

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Web Forms :: Use Response.redirect On Button Onclick Event?

May 30, 2010

How can I use response.redirect on button onclick or onclientclick event?

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Web Forms :: Adding OnClick Event To User Controls?

Jan 19, 2010

I've just slapped together a new user control and I need to add a OnClick event to it so I can handle it via page code behind.

I've never had to do it before so if someone would be kind enough to shead some light that'd be fantastic.

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