Web Forms :: How To Assign Multiple Buttons To A Single Event
Jul 16, 2010
I am trying to learn C# web programming. I am trying stuck and am unable to proceed for 2 days.I have a simple table with three columns (ISBN, Book Name and Delete).The column has a delete button. When the delete button is clicked, the book is removed from the session. The books are stored as objects within the session.The trouble I am having is when a user clicks on the "Delete" button, how do I pass the ISBN value to the onclick method. Can someone kindly tell me the best way to achieve this?I tried doing it below but am going nowhere.
[Code]....
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Mar 3, 2011
I have a dropdown list that contains a collection of names. My entire names list is very large (over 2,000) so I would like to pair down the names in the drop down list to those starting with the same letter.To do this I would like to have 26 links all on the same line, one for each letter in the alphabet ..
A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z
The idea being that the user clicks on the letter they are interested in and the stored procedure that obtains the list of names is re-executed to only grab those names starting with the letter that was clicked and then the resulting dataset is rebound to the dropdown list.
What is vexing me is how to handle creating all the "Click Events" necessary to deal with the user "clicking" on a link. I could create 26 different event handlers, one for each link, but I have to believe there is a simpler way I am not seeing.Form demonstration here is the click event for one link, the letter "A" ...
Protected Sub lnkLetterA_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lnkLeterA.Click
Call LoadNamesIntoDropDown("A")
End Sub
Is there a way to create one event handler that could handle all 26 links?
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Feb 4, 2011
I am using MS SQL Server 2005 & here is my problem: I need to assign values to the multiple variables in a single select. But each value is depend on the certain value of the other column of the table.
declare @i1 Int, @i2 Int, @i3 Int;
select
case Table.column1
when 'red' then @i1 = Table.column2
when 'green' then @i2 = Table.column2
when 'blue' then @i3 = Table.column2
end
from
dbo.Table
how to achieve this in a single select?
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Sep 23, 2010
I want to dynamically build a table where each of the first three cells may or may not contain an image. If a cell contains an image, it may or may not contain a radio button. The last cell contains a button or link button. I want all the buttons to be handled by the same click event. The number of rows, which cells will have an image, and which cells will have a radio button is not known at design time. Finally, the images are displayed using the better image control.
I'm trying to get this to work usinging a repeater, but at the moment I can't get the radio button checked propety to change from the default value. I'm using an arraylist as a datasource. I thought of using a gridview, but I don't know how to add a radio button and a better image control to a cell.
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Aug 12, 2010
Since i have 5 buttons that pretty much run the same code, except for the database updates, i found some examples of how to do this.. so i created 1 button event, and put my general calc code then some if statements to determine what button was clicked.. but doing this now i get a NullReferenceException
and here is the code its complaining about, why would this work within the other button events, but not this one? Ive compared and and all the buttons on the page are the same with the except of the database entries.
Button b = (Button)sender;
Label tfive = (Label)FormView1.FindControl("five");
Label ttwo = (Label)FormView1.FindControl("two");
[Code]....
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Jun 15, 2010
i try to create dynamic control and have a single event handler to ease the fireevent how do i do it?also can i declare a single event handler to parent control and be use by child control of the same type
in example:
creating htmlanchor name aa
aa.Control.Add(any anchor)
after adding the control
declare the event handler
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May 19, 2010
I have a stored procedure that returns 3 tables within the single recordset it returns. If I set a SqlDataSource to get data from this procedure, it works, but it only returns the first table. I want to have a GridView display the data from the 2nd or 3rd table using a SqlDataSource, but I can't figure out how to specify a particular table.
While there are some posts discussing this out there, I can't get a definitive answer about whether or not this is even possible (?). In a worst-case scenario, I can create another SP that only returns the 3rd table - but that creates a little maintenance headache that I would prefer to avoid.
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Sep 20, 2010
I am trying something apart of my boundries, is there any way to disable a single intem in dropdownlist or stop the ddl change event for a single item.
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Feb 14, 2011
I have a website that sales associates access to view account information with clients. S.A's can only view information for accounts that they are tied to. Some clients have more than one account, S.A's can be tied to more than one account, but not all accounts of one client need to be tied to one S.A.
On the account info pages, I have account numbers (dynamically displayed labels) displayed of other accounts that the account client is associated with, which the S.A's can see. I'm modding this so that if the S.A has viewing permissions of any of the other accounts on that list of accounts, that instead of a label being displayed, a button directing them to that account page will display instead. In order for this to work, I have to attach a security function to the button, otherwise the page will blow out on the S.A's.
So I'm running a piece that is displaying a button instead of a label, which is working fine. My problem is when I try to attach the security event to the dynamically displayed buttons. It seems that the page just posts back and doesn't execute my code at all.
On my Page_Load, I'm running this after the buttons and labels are displayed:
For x = 0 to tblAccountList.Rows.Count - 1
'use a try to target the button, use catch to handle if it's instead a label, only one cell per row.
Try
Dim accountLink as Button = tblAccountList.Rows(x).Controls(0)
Addhandler accountLink.Click, AddressOf Me.PermissionViewCheck
Catch ex as InvalidCastException
Continue For
End Try
Next
I don't have any code checking for postbacks or anything like that, but the "PermissionViewCheck" event never fires and just reposts the page.
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Jan 28, 2010
I am listing about 20 rows, each row represents an Order.Each row needs to have 3 buttons, each button click will perform a different action.I have 3 actions to handle each button post request, I am just unsure how to setup the Html forms for each button.
<tr>
<td>
<form method="post" action="/orders/do1"><input type=button ... /></form>
<form method="post" action="/orders/do2"><input type=button ... /></form> [code]....
Should I create 3 forms for each button, per row in my listing?(that would mean 20 rows x 3 forms = 60 forms on a page)Is that 'ok' to do? (i.e. or is there a better way to do this?)
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Mar 1, 2010
I am not sure how to do this. I have part of it working and I think I understand why it isn't working, I just not sure what I have to do to fix it... I am dynamically placing some data into an ASP:Table from a DataSet. This is all done from the Page_Loud event. I am looping through the dataset by going through the rows no problem to display the data in cells added by rows to the asp:table.
What I am also doing though is adding a button for each row that is to run an Access insert query that adds a record in a log table.I have used the following code to get this to work which it does, most of this is called through functions in the Page_loud event. this is the gist of it:
this is in a loop of the DataSet
for (int i = 0; i < dsResult.Tables[0].Rows.Count - 1; i++)
{
Button btn = new Button();
btn.Text = strDynamicText;
intTID = dsResult.Tables[0].Rows[i].ItemArray[5].ToString();
[Code]....
Here is the problem I am having. The button does display for each row, and the query does execute and run when I press the button. The values being passed in intTID and intUserGroup (are global), are suppose to be different for each row though, and are to insert a unique table ID, and a different group depending on what is in the dataset. Problem is, it is only assigning the last tableID from the result set into the button and will always pass that same ID no matter what button is pressed. This is the same with the intUserGroup. It needs to dynamically have differnent table IDs passed but that's not happening. What do I have to do differently to make sure that when the button is created dynamically it will pass the unique values for each row?
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Nov 27, 2010
I have an unknown number of image buttons inserted into a Placeholder at runtime during a webpage's Init stage. I would like to use a single event handler routine in C# language to determine which control was clicked and process any one of them differently. How do you create an event handler to process whichever image button that is clicked?
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Aug 7, 2010
I am currently learning dotnet (having recently learned ASP Classic) and i have come across the Menu Items and their ability to be based on the sitemap.
I love this idea and would like to use it on my demo site that i am building. However i cant seem to find a way to replace the links with images. I did have a look on google and noticed people wee using the ImageUrl method but said you have to code that yourself. I dont know how to tell it that imageUrl is ... well an image URL.
And then, should this be doable, is it possible to assign an onhover/onmouseover event to change the image?
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Feb 23, 2010
I have a listbox (lb1).When multiple values are selected from the listbox ,only the first value is shown in the label.
label.text=lb1.SelectedItem.Text; This seems to be working for just single value.
How can I assign multiple values to the label?I tried using the foreach loop with the listitem but its not working.
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Jan 12, 2011
below written question :
1.) What is the name of the OS process in which App Domain resides.
2.)if suppose There are Three Windows application hosted on a same envoirment and two instance is working for each application at a Time, means now total instance are six .what will happen among the below written cases :
a.) There will be six different app domain in a single OS process
b.) There will three app domain(one for each application) in a single OS process and some Parallel thread will be executed in each app domain for another instance.
c.) There will be Three OS process corresponding to each application.
3.) If eveything will remain same except there are three web application in place of windows in point 2, will there be any change in functioning.
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Aug 18, 2015
I have a question in gridview, I want to combine my two or more records into a single cell with two rowsfor Example i have a ID, Name, Year Start, and Year End for Column name in database and i want call it into my gridview that the Year Start and Year End will combine to Year like:
In Database
ID Name Year Start Year End
1 Yourname 2010 2015
In Gridview:
ID Name Year
1 Yourname 2010 2015
in a year column i want it to two row..
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Feb 17, 2010
I've created an array of buttons like static Button[] myButtons = new Button[3];
and then creating and adding buttons to my panel like myButtons[i] = new Button();
myPanel.Controls.Add(myButtons[i]);
in my code behind.
How can I handle the events that occurs when a user clicks these buttons, like using OnClick="myMethod" with regular buttons?
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Mar 14, 2011
I've a Username and Password TextBoxes, and more than one ImageButton in the page, so while I type the password, press enter, it presses another ImageButton than the Login ImageButton in my page.
How can I choose which ImageButton function to fire when pressing Enter while in the Password TextBox?
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Aug 18, 2015
I want to bind three column with one row in gridview in asp.net with c#,
i want like this,
Name | Info
----------------------
name | lastname
| phone number
| address
I get this by default
name | last name | phone number | address
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Jun 2, 2010
here is the problem I have:There are 2 textboxes: uxActiveDate, uxExpireDate. Expiredate has 2 validators attached to it:
In the markup:
[Code]....
In the code behind file:
[Code]....
The problem is when expire date is selected before active date, and current date, then both the error messages are displayed. I have to set priority or something so that these 2 messages are not displayed at the same time. Is it doable?
PS: Since if required field validator does not pass, then other validators dont execute, I guess there is a way to set priority so that if one validation is not passed others will not execute. Validation summery is not an option, since it does not show message client side.
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Jan 26, 2011
I'm trying to create a button dynamically with event by original button. The original button's click event response creates a button. The new button has a click event attached with a test message.What I have to do is onclick change background color of dynamically created button and grab id value to delete when button delete is clicked. Unfortunately, when I click the dynamically attached button, nothing happens.
[URL]
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May 13, 2010
I have an repeater with two buttons. I tried two different ways to make a click event on the two buttons. Neither of the two ways function. They do both the same. No errors but the repeaters content disappear.
My repeater:
[Code]....
As you can see, onbtnForumGroupsDebateListEditDebateAdm I tried to use the repeaters ItemCommand
the code for this here:
[Code]....
Then I tried to do a simple OnCommand instead
The code for this is:
[Code]....
I tried to make a "run to curser" and can see, that I don't get into the functions.
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Mar 7, 2011
i am using multiview, In this using three views as three different pages then how can i assign the default buttons for every view ?
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May 9, 2010
In my code, I cannot use a radiobuttongroup due to formatting constraints. This is a page where the user can update the data. So I have
<asp:TableCell ID="TableCell1" CssClass="answer" runat="server">
<asp:RadioButton ID="PatientYes" GroupName="Patient" runat="server" />
</asp:TableCell>
<asp:TableCell ID="TableCell2" CssClass="answer" runat="server">
<asp:RadioButton ID="PatientNo" GroupName="Patient" runat="server" />
</asp:TableCell>
If I have the case where one button is set when the page is displayed and the user changes to the other value, BOTH are coming back as TRUE. How can I just get the value selected by the user?
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Jan 24, 2016
Trigger multiple buttons when upload button is clicked in ASP.Net.
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