I'm trying to set OnClick-Event to the asp:Button control. I already tried to double-click the button also from Properties-Window >> Events >> Actions but these doesn't work. Any idea why would i face such thing and how to solve it ?
You can do it manual, eg:
<asp:Button id="btnSave" runat="server" OnClick="btnSave_Click" Text="Save"></asp:Button>
and on code behind
protected void btnSave_Click(object sender, System.EventArgs e)
{
// here place your code for the click event.
}
Related
I know there already exist a thread for the same question but it didn't help me fix it (I tried what they suggested) anyways here is the html side of the button, is there anything I'm missing:
<asp:Button ID="btnadd" runat="server" Text="add" OnClick="btnadd_Click" CausesValidation="False"/>
And this is the c# side:
protected void btnadd_Click(object sender, EventArgs e)
{
//do something
}
EDIT: solution, i had the button inside a form causing it not to work, removed the form and it worked
My ASP.NET website doesn't see newest Session values. When my form is being sent to the server after clicking the button, the result sent back to browser depends of Session values. I process them in Page_Load method. It doesn't see the last change od Session values, but one before last. It looks like button's event handlers are executed before page's event handles but I'm not sure if it is like that.
I tried to do my code in other methods like Page_PreInit etc, but it's still the same like that. The only thing that works for me is refreshing the page: Response.Redirect(Request.Url.AbsoluteUri); after any change of any Session value, but it resets values of all controls, which I want to be the same as before. Is there a better solution?
Example: when It runs first time, the label's text is "Click the button", but when I click any of the buttons one time, nothing happens. When I click any of the button second time, label's text is the value of first click (even if I click A and then B, value changes to A after clicking B).
form:
<form id="form1" runat="server">
<div>
<p>
<asp:Label ID="Label1" runat="server" />
</p>
<p>
<asp:Button ID="Button1" runat="server" Text="A" onclick="Button1_Click" />
<asp:Button ID="Button2" runat="server" Text="B" onclick="Button2_Click" />
</p>
<p>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</p>
</div>
</form>
Event handlers:
protected void Page_Load(object sender, EventArgs e)
{
Label1.Text = Session["Letter"].ToString();
}
protected void Button1_Click(object sender, EventArgs e)
{
Session["Letter"] = "A";
}
protected void Button2_Click(object sender, EventArgs e)
{
Session["Letter"] = "B";
}
Global method:
void Session_Start(object sender, EventArgs e)
{
Session["Letter"] = "Click the button";
}
Without your code its very difficult, but is sounds like you are setting a Session collection value in the code of a button's click event( or some other control/event ), and expecting it to be in the SESSION collection during the Page_Load event.
It doesn't work like that - When the page request comes in, Page_Load happens before the control's events.
Instead of Page_Load use Page_PreRender this event occurs before the page is prepared to be sent back to the client.
Your addition of the code confirms the above.
Normally I wouldn't use Session_Start to initialize stuff like this, use Page_Load and IsPostBack property
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack){
Label1.Text = "Click the button";
}
}
i need to fire html buttom after the end of my asp.net c# code
<asp:Button ID="Button3" runat="server"
Text="Button" onclick="Button3_Click" />
<input id="Button2" type="button" value="button" data-type="error" class="growl-type2" runat="server" />
and cs code is
protected void Button3_Click(object sender, EventArgs e)
{
----
i need to fire button2( automatically) in this position
}
Button clicks are just handled events. To fire a button click you simply need to raise the correct event.
You'll need something like: Button2_Click(sender, e)
Alternatively, you can inject some Javascript into the page, which reacts directly to the click of button3 or is caused by the click of button3 and causes the click of button2 through something like: document.getElementById('Button2').click()
I have a user control that allows the user to add/edit a worker. When the user clicks the 'Add Worker' button the user control appears in a DevExpress Popup. All of the following button are in an update panel to prevent Postbacks.
When I edit a user (pencil) everything works fine. To edit a user I enter a last name, click search (magnifying glass) and then click edit (pencil). It's only when I load the page and click add the save/cancel buttons do not work.
I add the control in asp.net
<dx:PopupControlContentControl ID="PopupControlContentControl2" runat="server" SupportsDisabledAttribute="True">
<uc:WorkerAddEdit ID="wae" runat="server" OnOnWAECancelEvent="wae_OnWAECancelEvent" OnOnWAESaveEvent="wae_OnWAESaveEvent" />
</dx:PopupControlContentControl>
Here is the C# code behind the edit (the one that works correctly. The pencil)
protected void btnEditWorker_Click(object sender, EventArgs e)
{
SetupSessions();
wae.WorkerEdit = loadedWorker;
pucAddEditWorker.HeaderText = "Edit Worker";
pucAddEditWorker.ShowOnPageLoad = true;
}
Here is the C# code behind for the add (the round + that doesn't work)
protected void btnAddWorker_Click(object sender, EventArgs e)
{
wae.WorkerEdit = null;
pucAddEditWorker.HeaderText = "Add Worker";
pucAddEditWorker.ShowOnPageLoad = true;
}
Here is the asp.net section of the save and cancel button. This shows both onClick calls
<td><dx:ASPxButton ID="btnSave" runat="server" Text="Save" Theme="MetropolisBlue"
Width="50px" Height="20px" style="float:right;" onclick="btnSave_Click" /></td>
<td><dx:ASPxButton ID="btnCancel" runat="server" Text="Cancel"
Theme="MetropolisBlue" Width="50px" Height="20px" style="float:right;"
onclick="btnCancel_Click" /></td>
Here is the events in the code behind
protected void btnCancel_Click(object sender, EventArgs e)
{
//Do Work Here
}
protected void btnSave_Click(object sender, EventArgs e)
{
// Do Work Here
}
If I put a break point on either the save or cancel click event nothing ever happens. I've been googling for a while now with no luck.
Thanks in advance.
In Design mode of the form, have you tried clicking the control once, and check it on Properties (Events) window? Maybe the Click event does not have any method selected.
Select the btnSave_Click method in the Click label.
I figured out what the problem was. I am using a textbox from DevExpress. Further up in my code I had the textbox as follows:
<dx:ASPxTextBox ID="txtPhoneNumber" runat="server" Width="100px" Theme="MetropolisBlue" >
<MaskSettings Mask="(999) 000-0000" IncludeLiterals="None" />
<ValidationSettings Display="None">
</ValidationSettings>
</dx:ASPxTextBox>
Because I had the 0's in the mask it was trying to validate whatever was in the text box. Because I turned off the validation settings (ValidationSettings Display="None") I never saw the error but it was still validating. I made a change to this:
<dx:ASPxTextBox ID="txtPhoneNumber" runat="server" Width="100px" Theme="MetropolisBlue">
<MaskSettings Mask="(999) 999-9999" IncludeLiterals="None" />
<ValidationSettings Display="None">
</ValidationSettings>
</dx:ASPxTextBox>
and everything worked fine. I just started using DevExpress and it shows! Thanks to everyone for the help!
I have session in a page and would like to reset this session when the user text input changes. For example: account number xxx will have a session, once account number changes to yyy i would like to reset session. I dont have login to this page so cannot dump session upon logout. help is appreciated. thank you in advance.
Try this:
in aspx:
<asp:TextBox ID="TextBox1" runat="server" ontextchanged="TextBox1_TextChanged"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="Button" />
in code behind:
protected void TextBox1_TextChanged(object sender, EventArgs e)
{
Session.Clear();
}
So you'll need an event handler that is fired when the account number changes (or whenever the user text input changes), and then according to this post you'll need to either use Session.Clear() which just removes all values from the object or Session.Abondon() which will destroy the session and trigger the Session_OnEnd event. Whichever you use will depend on what you want to accomplish.
make ajax call on "onkeyup" event of textbox and set new value in that session, you will get new value of textbox and can set it in session.
Use TextChanged event of TextBox and destroy the session using Session.Abandon() or Session.Clear() method
This will help you
If you write down code here, then we can give you exact answer
try this
<asp:TextBox ID="TextBox1" runat="server" ontextchanged="TextBox1_TextChanged"></asp:TextBox>
code behind
protected void TextBox1_TextChanged(object sender, EventArgs e)
{
Session["your_sesion_name"]=TextBox1.Text;//or what ever you want to update value
}
There are a couple of ways to do what you are asking.
Option one:
You could uses the text boxes ontextchanged event
<asp:TextBox ID="TextBox1" runat="server" ontextchanged="TextBox1_TextChanged" AutoPostBack="true"></asp:TextBox>
in code behind:
protected void TextBox1_TextChanged(object sender, EventArgs e)
{
Session.Clear();
}
The pit fall here is the OnTextChanged event is only fired once the textbox has lost focus.
Option 2:
Uses JavaScript to capture the onkeyup event and make an ajax call back to the server to update your session information
The pit fall here is that every time the user enters a character into the textbox you would be making the ajax call. Although you could add checks so that the call is only made if the account number is a certain length.
Option 3:
You could add a button to your form for the user to click once they have entered the account number. This would avoid needless calling the server on every key press as in option 2. Then within you buttons click event you could do the work with your session
<asp:TextBox ID="TextBox1" runat="server" />
<asp:Button ID="btnSubmit" runat="server" onclick="btnSubmit_Click" Text="Submit" />
Code behind
protected void btnSubmit_Click(object sender, EventArgs e)
{
// do session work
}