Web Forms :: Trigger Causes Control To Display Twice
Jul 18, 2010
In the code below, I learned to use a trigger to either display or hide a panel (pnlMaidenName_Edit) when the user clicks on either the female or male designation of a radio button (rblGender_Edit). (Sorry that the code isn't displaying right here; I tried two or three times to correct it.)
[Code]....
The problem now, however, is that whenever rblGender_Edit is assigned a SelectedValue of 2 for female, the hidden textbox displays in a location way out of position from where it should be. Also, the radio list button displays again, as shown in the following screenshot, near where the textbox now displays. [URL]
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Jul 23, 2010
In the code below, I learned to use a trigger to either display or hide a panel (pnlMaidenName_Edit) when the user clicks on either side of a radio button (rblGender_Edit). The problem now, however, is that whenever rblGender_Edit is assigned a SelectedValue of 2 for female, the hidden textbox displays in a location way out of position from where it should be. Also, the radio list button displays again, as shown in the following screenshot, near where the textbox now displays.
[Code].....
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Oct 31, 2010
I have UpdatePanel with GridView and i want register posback triger for index changing and asyncpostback for pagging and sorting.
When registering AsyncPostback (with event) and Postback in one control i have ASP event.
How go around this problem? , dynami register triggers mayby is a solution but i can`t unregister triger.
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Sep 9, 2010
How can i choose what button is activated when a user presses Enter after for example filling out a textbox?
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Mar 2, 2011
I have got a query regarding the usage of delegate in usercontrols. The scenario is I have got a user control which acts as a footer
on all the pages, It has the following place holders : Email, Print, Logout.
What I want to acheive here is when the customer logged in he/she has certain feauture's on the website for instance his/her personal diary,
dieting charts, birthday calender etc. I have figured out a way to create pdf's of each summary , what I am looking for is how to use the usercontrol
for instance when the customer clicks on the email place holder on certain page which is in the footer usercontrol, the following place holder should send
an email with the pdf file of that particular page attached to the customer. I came to know that delegate is the best way of doing it, but I cant find any specific tutorial on it.
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Jan 27, 2011
I have around 8 user controls on a page with a form in each of them. I have a dropdown list that allows you to select a form, with a selectedindexchanged event that hides the current form and shows the requested form.
There is some javascript that needs to fire when each form loads. Now, when you click on a form for the first time, the javascript fires as it should, but if you click the dropdown to change the form, then click back to a previous form, the javascript doesn't fire (because the user control is already loaded).
Is there anything I can do to trigger a postback, or reload/refresh the user control whenever an option is selected from the drop down?
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Jun 5, 2010
I need to trigger a postback or self refresh a user control from one of the functions in the same user control.
Problem is that I am setting the selected value of a dropdown control in this usercontrol but it does not actually show up until after a postback.
This I came to know after I found that the said drop down shows the current value only after I click on another button.
I need to do this on the server side in the function given below:
public void FillDropDown()
{
FillProgramList(select);
//if (Request.Cookies["prgname"] != null)
//{......
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Jan 22, 2010
I am having an issue with a user control that contains a dropdown and a validator. I created a property for the "CausesValidation" property on the dropdown and set it to false. And yet the dropdown is still triggering the validator. I am having issues with this elsewhere as well including on my ModalPopup.
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Jan 9, 2011
is there an easy way to update a user control from another user control? i have a input box and a submit button. the user inputs a code, hits sumbit and based on the code, points are applied to thier score (another user control). the points are applied to the score in the database but don't show up on the page display until i hit refresh. is there an easy way to update the control on submit?
protected void btn_Add_Coupon_Click(object sender, EventArgs e)
{
try
{
SqlDataSourceTEST.DataSourceMode = SqlDataSourceMode.DataReader;
IDataReader Reader = (IDataReader)SqlDataSourceTEST.Select(DataSourceSelectArguments.Empty);
if (Reader.Read())
{
int iPoints = 0;
iPoints = (int)Reader["Points"];
if (iPoints > 0)
{
Profile.TimesVisited = Profile.TimesVisited + iPoints;
lblcoup.Text = iPoints.ToString() + " have been added to your score!";
}
else
{
lblcoup.Text = "Coupon Code Not Valid";
}
}
Reader.Close();
Reader.Dispose();
}
catch (Exception ex)
{
}
}
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Jan 6, 2011
In my application i have placed one label in the update panel and in triggers one textbox and one dropdownlist.
<asp:UpdatePanel ID="TestPanel" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Label ID="lblTest" runat="server"></asp:Label>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="txtTest" EventName="TextChanged" />
<asp:AsyncPostBackTrigger ControlID="ddlTest" EventName="SelectedIndexChanged" />
</Triggers>
</asp:UpdatePanel>
In the textbox if i gave any wrong input then i am displaying the error message with label "lblTest".The error is displayed in the label sucessfully but when i am selecting the ddlTest dropdownlist the error message is disappeared.
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Dec 4, 2010
I have a CheckBox that is located inside a SelectItem Template. The CheckBox has Autopostback= true. Located outside the list view is a label. When the CheckBox is checked, I would like to trigger an the Updatepannel that includes the label. Instead I get an error message "'CheckBox1' could not be found for the trigger in UpdatePanel 'UpdatePanel3'. The code snippet is as follows:
Asp.net Markup:
[Code]......
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Aug 5, 2010
I want to create a dynamic, role-based tab control that doesn't trigger a postback when the user switches between tabs.
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Mar 12, 2010
I've got a page with two ContentPlaceHolders. In first there is UpdatePanel with GridView. In second I located DropDownList which is trigger for UpdatePanel.
<asp:UpdatePanel ID="stanUpdatePanel" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="true" >
<ContentTemplate>
GridView & other stuff
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="ATDropDownList"
EventName="SelectedIndexChanged" />
</Triggers>
</asp:UpdatePanel>
Running the page causes error: "Control with ID 'ATDropDownList" could not be found for the trigger in UpdatePanel". I thought it was because the ATDropDownList is located inside ContentPlaceHolder. So I changed ATDropDownList's ID to UniqueID as follow:
<asp:AsyncPostBackTrigger ControlID="ctl00$ContentPlaceHolder2$ATDropDownList" (...)>
Everything works good, but I want to change it from page's code-behind. I tried to put
[Code]....
somewhere in code, but without luck so far.
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Jan 1, 2011
I have a UpdatePanel with trigger like this:
[Code]....
The ListView will always return one result.
When I load the page I get: A control with ID 'btn' could not be found for the trigger in UpdatePanel 'upPanel'.
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Mar 17, 2010
By default the postback of child controls will trigger update panels' update.
How can I avoid the same?
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Mar 23, 2010
I have a user control in a master page with two drop down lists. When the user selects an item out of either ddl, I want to load a specific user control inside an update panel on the content page. I can't figure out how to get the user control to trigger the update panel.
Master
<%@ Register src="toolbar.ascx" tagname="toolbar" tagprefix="uc1" %>
<head id="Head1" runat="server">
</head>
<body>
[Code]....
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May 27, 2010
how to trigger a accordion pane with a button server control click ?
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May 10, 2010
My CompositeControl creates dinamically several RadioButtonLists according to the DataSource information. These controls are added to the Controls list and rendered in CreateChildControls event.
I need to create a LinkButton that clear a specific RadioButtonList selection and do a postback, to load the DataSource information again (some selections changes the data that need to be loaded from the database). For each RadioButtonList, I've put a LinkButton and assigned the Click Event to a method inside the same CompositeControl, to do the RadioButtonList cleaning.
Unfortunatelly, the LinkButton doesn't trigger the Click Event. In HTML code, the link has the "onclick" attribute setted with the asp.net event, but when clicked, nothing happens.
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May 7, 2015
Here txtamt is the item template of a gridview and uptotamt is outside of the gridview.
<asp:UpdatePanel ID="UpTotAmt" runat="server" RenderMode="Inline" UpdateMode="Conditional">
<ContentTemplate>
<asp:TextBox ID="txttot" runat="server" CssClass="texttot" Width="180px"
Enabled="False" ></asp:TextBox>
</ContentTemplate>
<Triggers >
<asp:AsyncPostBackTrigger ControlID="txtamt" EventName="TextChanged" />
</Triggers>
</asp:UpdatePanel>
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Nov 13, 2010
Data from the server subscription cannot trigger table trigger
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Jun 14, 2010
I am trying to attach a server-side event to lookup the city/state for the user-entered zipcode in a field like the one below.
<asp:TextBox ID="TextZipcode" runat="server" CssClass="inputtext" Columns="10" MaxLength="10"></asp:TextBox>
Since there is no lost focus event to capture, has anyone had any luck getting this to work?
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Jul 15, 2010
I searched google and found asynchronise post back trigger is used if we want update panel to post back on some event of control if it is out side the update panel. Than what is purpose of post back trigger ?
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Feb 7, 2010
I'm using a popup calender with some code i've found here.
So because it's not something sophisticated (just a calander, pops and get a value), i was wondering if there is a way to make it appear above another control.When i appears now it's half hidden behind a Listview.I could make it appear above but i want it to be next to the textbox that it sets the value.
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Feb 16, 2011
i have web page, and i use data from a local SQL SERVER, i work on VS2010. The thing is that some of my tables use triggers, and when i want to update, it displays an error because the table has asigned a trigger. So how can i use a button that has a trigger. For example, i have a table with employees, and other table with it expertise, in my web page i can change it expertise of each employee and with that i determine its payment according to the hours he worked. So if i change the expertise he has, in other table the expertise of this employee should change, but right now it doesnt. Because in this other table the expertise remains the same. This is what i have right now.
Table employee
Id - IdEmployee - Name
Table Hours
IdProyect - Proyect - Hours - Expertise - Employee - Payment
Table Expertise
Id - IdEmployee - Name - Expertise - BASEpayment
So, the main table is the Hours table, where i need to pay the employee accordint to its expertise in the table expertise. When i change the expertise in the table expertise, i need that change in the other table.
here some of the code.
[Code]....
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Mar 6, 2011
I have three controls in the same page
one DetailsView as a summary and two formview
From database i load first data to detailsView with Id as datakey, ApplicationID and ProtocoleID as ordinary attributes for detailsviews, but datakey for each formview.
Once Detailsview loads, I wish automatically from every attribute ApplicationID and ProtocoleID of Detailsview to load both controls since the database.
How can i do that ? I think it's only programatically...
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