In my single web application, only the Page_Load(...) event is firing. I've tried using the text change event below (auto generated by double clicking the textbox):
protected void txtBuyerExtension_TextChanged(object sender, EventArgs e)
{
// do something
}
But nothing happens. It does that for every control... the only event that fires is Page_Load. How come it is doing this?
Add AutoPostBack="True"
<asp:TextBox ID="txtBuyerExtension" runat="server" OnTextChanged="txtBuyerExtension_TextChanged" AutoPostBack="True"></asp:TextBox>
You need to set the AutoPostBack property to enable TextChange event.
<asp:TextBox ID="txtBuyerExtension" runat="server" OnTextChanged="txtBuyerExtension_TextChanged" AutoPostBack="True"></asp:TextBox>
And once you change the focus from TextBox this event will fire.
<asp:TextBox ID="txtSearch" CssClass="textbox1" placeholder="Search.." AutoPostBack="true" runat="server"
OnTextChanged="txtSearch_TextChanged"></asp:TextBox>
Related
I've problem in my page sample.aspx textbox effected by JavaScript autocomplete
and textbox has event ontextchanged when i select any from autocomplete result the event doesn't work,
ex: google search when select from autocomplete result it do event.
<asp:TextBox ID="CUSMO1"
AutoPostBack="True"
runat="server"
Height="25px" Width="280px"
ontextchanged="CUSMO1_TextChanged"
AutoCompleteType="Enabled" >
</asp:TextBox>
How to Resolve?
Did you checked ontextchanged event with autocomplete off?
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!
In my ASP.NET page's Page_Load I'm trying to determine whether a certain button has been clicked and is attempting a postback:
if (Page.IsPostBack)
{
if (Request.Params.Get("__EVENTARGUMENT") == "doStuff")
doSomething();
}
doStuff is a JavaScript within the markup, but I don't want this alone to trigger the doSomething() method call, I also need to be able to ensure that the button the user has clicked is correct.
How can I identify and reference the button control from the code behind once the user clicks? I searched for and discovered this but when I try to implement it, the control returned is always null.
Or use the CommandName and command events.
<telerik:RadButton ID="RadButton1" runat="server" CommandName="first" CommandArgument="one" OnCommand="CommandHandler" />
<telerik:RadButton ID="RadButton2" runat="server" CommandName="second" CommandArgument="two" OnCommand="CommandHandler" />
<asp:Label ID="Label1" Text="" runat="server" />
<asp:Label ID="Label2" Text="" runat="server" />
protected void CommandHandler(object sender, CommandEventArgs e)
{
Label1.Text = e.CommandArgument.ToString();
Label2.Text = e.CommandName;
}
You haven't really explained what you're trying to do, but it sounds like you would have a much easier time if you added an OnClick event handler to the button instead of trying to figure it out in Page_Load. The event handler would only be executed when that button is clicked.
I have the following DropDownList defined:
<asp:DropDownList ID="ddlStuff" CssClass="myCssClass" OnSelectedIndexChanged="PopulateAnotherDropdown" runat="server"></asp:DropDownList>
However, my PopulateAnotherDropdown method isn't firing. I have a breakpoint set on the method, and it's not being hit.
Here is my method write-up in code-behind:
public void PopulateAnotherDropdown(object sender, EventArgs e)
{
...
}
For what it's worth, the page is rendering as follows:
<select name="ctl00$MainContent$ddlStuff" id="MainContent_ddlStuff" class="myCssClass">
Any ideas?
Because you forget to add: AutoPostBack="true"
To fire the SelectedIndex of the dropdownlist control, it needs to postback to the server. For that to happen you to have to set AutoPostBack="true" in the control property.
Please Set
AutoPostBack="true"
of the dropdown.Because by default it is false except button control
I have an ImageButton in a GridView.
<asp:GridView ID="ItemGridView" runat="server" DataKeyNames="Id"
OnRowDataBound="ItemGridView_RowDataBound" AllowPaging="True"
AllowSorting="True" EnableSortingAndPagingCallbacks="True"
AutoGenerateEditButton="False" AutoGenerateDeleteButton="false"
DataSourceID="ItemDataSource" EnableViewState="true" >
....
<asp:TemplateField ShowHeader="False" ItemStyle-Width="40px">
<ItemTemplate>
<asp:ImageButton ID="btnDelete" SkinID="btnDelete"
runat="server" CausesValidation="false"
OnClick="btnDeleteAccountItem_Click"
OnClientClick="javascript:return confirm('Are you sure?');" />
</ItemTemplate>
</asp:TemplateField>
and a corresponding handler for the delete button event
protected void btnDeleteAccountItem_Click(object sender, EventArgs e) {
ImageButton btnDel = sender as ImageButton;
GridViewRow row = (GridViewRow)btnDel.NamingContainer;
....
}
I am using this very same construct in many places and it works fine. I have one gridview now, though, where it does not, and I am hoping to get some ideas for how to track down the problem.
When I click the button, the client-side event fires and the alert box is displayed, then the post-back fires and I can hit a break point in the Page_Load method. So the client-side wiring of the button events seems to work. However, the event is not handled and the method btnDeleteAccountItem_Click does not get called.
This is a complex page and I cannot post all the code. What can I do to narrow down potential causes?
Your event is defined incorrectly ImageButton.Click:
protected void btnDeleteAccountItem_Click(object sender, ImageClickEventArgs e) {
ImageButton btnDel = sender as ImageButton;
GridViewRow row = (GridViewRow)btnDel.NamingContainer;
....
}
I'm not sure if this will solve it, but once I placed a asp:Button control in my markup and generated the 'onClick' signature for it too.
I then changed my mind and decided to make it an Image button... ... I simply rewrote the tag myself.
After making those changes, I realised that the onClick signature wasn't working anymore... after some research I found an answer... I was using 'EventArgs' instead of 'ImageClickEventArgs'...
(object sender, ImageClickEventArgs e)
Once I changed the event arg object, it started working as normal.
rather than creating a button click event, you could use the datagrid row command event
You can then use e.commandName and e.commandArgument to find out which button was pressed and what its argument is:
Private Sub gv1_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles gv1.RowCommand
If e.CommandName = "Whatever" Then
// do something
End If
Hope it helps
make sure the CausesValidation is set to True.
You can try (you are creating wrong click event of ImageButton) :
<asp:TemplateField ShowHeader="False" ItemStyle-Width="40px">
<ItemTemplate>
<asp:ImageButton ID="btnDelete" SkinID="btnDelete" runat="server"
CausesValidation="false" OnClick="btnDeleteAccountItem_Click"
OnClientClick="javascript:return confirm('Are you sure?');" />
</ItemTemplate>
</asp:TemplateField>
and for image button there are change in click event like as follow :
protected void btnDelete_Click(object sender, ImageClickEventArgs e)
{
ImageButton btnDel = sender as ImageButton;
GridViewRow row = (GridViewRow)btnDel.NamingContainer;
}