logo
down
shadow

how to add event handler to programatically created checkboxes


how to add event handler to programatically created checkboxes

By : mcalzetta
Date : November 26 2020, 01:01 AM
help you fix your problem C# is case-sensitive. Your function is named CheckBox_CheckedChanged, but you are attempting to attach an event handler for a function named checkBox_CheckedChanged (note the upper- vs. lowercase "c" at the beginning).
code :


Share : facebook icon twitter icon
Event Handler is not getting called for dynamically created checkboxes

Event Handler is not getting called for dynamically created checkboxes


By : Elizabeth Green
Date : March 29 2020, 07:55 AM
around this issue Add your checkboxes dynamically and set a unique name for each checkbox. Checkboxes are only posted back to the server if the checkbox is checked, so you can test to see if it is checked by checking Request.Form to see if the name exists. For example, lets say you named your check boxes chk_[0-9] (i.e. chk_0, chk_1 etc till 9), you could check if they ticked by doing:
code :
for(int i=0; i < 10; i++)
{
    string chk_name = "chk_" + i.ToString();
    if (Request.Form[chk_name] != null)
    {
        //checkbox is checked
    }
    else
    {
        //checkbox is not checked
    }
}
Event handler function isn't firing up for created dynamically checkboxes

Event handler function isn't firing up for created dynamically checkboxes


By : Jesse Phillips
Date : March 29 2020, 07:55 AM
wish of those help Try;
making the event handler public & non-static, make sure nobody is eating up the events.
code :
chk[i].AddHandler(PointerPressedEvent, 
    new PointerEventHandler(SomeButton_PointerPressed), true);
Global event handler has no detail if the object that threw the exeception was created in an event handler

Global event handler has no detail if the object that threw the exeception was created in an event handler


By : Sue Murphy
Date : March 29 2020, 07:55 AM
wish helps you The stack trace was there I was just not looking in the right place
Depending if the object was created in a handler or not effects if the valuable stack trace is in the outer or inner exception
code :
public partial class App : Application
{
    void App_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)
    {
        System.Diagnostics.Debug.WriteLine((e == null).ToString());
        System.Diagnostics.Debug.WriteLine("e.ToString() " + e.ToString());
        System.Diagnostics.Debug.WriteLine("e.Exception.GetBaseException().Message " + e.Exception.GetBaseException().Message);
        System.Diagnostics.Debug.WriteLine("e.Exception.GetBaseException().InnerException " + e.Exception.GetBaseException().InnerException);
        System.Diagnostics.Debug.WriteLine("e.Exception.GetBaseException().Source " + e.Exception.GetBaseException().Source.ToString());
        System.Diagnostics.Debug.WriteLine("e.Exception.StackTrace " + e.Exception.StackTrace.ToString());
        System.Diagnostics.Debug.WriteLine("e.Exception.GetBaseException().StackTrace " + e.Exception.GetBaseException().StackTrace.ToString());
        StringBuilder sb = new StringBuilder();
        if (e.Exception.InnerException != null)
        {
            sb.AppendLine("InnerException");
            sb.AppendLine(e.Exception.InnerException.Message);
            if (!string.IsNullOrEmpty(e.Exception.InnerException.StackTrace))
            {
                int count = 0;
                foreach (string line in e.Exception.InnerException.StackTrace.Split('\n'))
                {
                    sb.AppendLine(line.Trim());
                    count++;
                    if (count > 3) break;
                }
            }
        }
        sb.AppendLine("OuterException");
        sb.AppendLine(e.Exception.Message);
        if (!string.IsNullOrEmpty(e.Exception.StackTrace))
        {              
            int count = 0;
            foreach (string line in e.Exception.StackTrace.Split('\n'))
            {
                sb.AppendLine(line.Trim());
                count++;
                if (count > 3) break;
            }
        }
        MessageBox.Show(sb.ToString(), "App_DispatcherUnhandledException");
        e.Handled = true;
        if (MainWindow != null) MainWindow.Close();
    }
    public App()
    {
        this.DispatcherUnhandledException += new DispatcherUnhandledExceptionEventHandler(App_DispatcherUnhandledException);
    }
}
Wiring all dynamically-created checkboxes to the same event handler

Wiring all dynamically-created checkboxes to the same event handler


By : mousmi kumari
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I'm trying to dynamically created checkboxes on a panel based on user-entered data. If any of these are checked, I'd like to UNCHECK a different checkbox, outside of the panel. Looks something like this: , Try using a variable instead:
code :
bool somethingChecked = false;
foreach (CheckBox cb in pnlCamTicky.Controls.OfType<CheckBox>()) {
  if (cb.Checked) {
    somethingChecked = true;
  }
}
chkAllCameras.Checked = somethingChecked;
Click event handler not persisting for dynamically created checkboxes

Click event handler not persisting for dynamically created checkboxes


By : kbh
Date : March 29 2020, 07:55 AM
may help you . You should use $(document).on('click', '#layer' + this.name, function(){...}) it usually works with dynamically added HTML.
Related Posts Related Posts :
  • Stop Continuation Task upon exception thrown from parent task
  • Is there a way to make msbuild write error output to stderr?
  • Unit testing: TDD with POCO Objects with navigation properties (relationship fixup)
  • GridSplitter disables my RowDefinition style
  • Memory leak only in Release mode
  • how to read specified string from url
  • how to store html code EMail template in a string variable or textbox c#
  • Set Selected Date to TimePicker wpf (TimePickers inside DataTemplate)
  • How to draw line in Silverlight Specifying Height?
  • Stored procedure executes but does not update data
  • ASP.NET ListBox Trouble
  • Why does C# also not allow empty conditions in while loops?
  • Unable to get a block of code into my regex match groups
  • What is difference between dbcontext.Add and dbcontext.AddObject
  • How do I update the file version number of C# DLL without recompiling?
  • Value for html control always null
  • HttpClient hangs when timeout is setting (Windows Phone)
  • Handle Multiple Form tag in asp.net page?
  • create word document with html content in c#
  • Confusion about Find And Replace
  • Format sms messages in Clickatell
  • Automated Function Overload
  • String to date in MS Access SQL statement gives type mismatch error
  • ShowDialog exiting on certain events
  • Is there a try Convert.ToInt32... avoiding exceptions
  • How to move wpf application into minimize tray at Window Start-up C#?
  • How to change display format of long variable?
  • How to use Addfields in MongoDB C# Aggregation Pipeline
  • MsTest TestCleanup method not called when an unhandled exception is thrown
  • missing last data when exporting gridview to excel
  • How to add array of objects to List in c#
  • Lambda Expression to order (sort) my list collection
  • Library for displaying music notation
  • How to compare two dictionaries in c# and get the output as True and False after validation
  • specify fields to be serialized with JSON
  • How do you obtain the content of a specific node using XmlDocument in C#?
  • How to ignore the first line in a csv file when you read the csv file in C#
  • c# - Problem calling public void from class
  • How to tell a class which objects it should create? Type vs. object confusion :(
  • Save CheckBox state to xml
  • WIX CAQuietExec NETSH Command Fails
  • Issues sending http put request every 60 seconds to RoR app
  • ConfigurationManager.ConnectionStrings.ConnectionString Issue
  • Real size WPF controls for printing
  • How to cancel properly?
  • C# String multiplication error
  • Using Solrnet and Assigning Attributes with Entity Framework Generated POCOs
  • Regex pattern for single backslash
  • TextBox: insert spaces for credit card number?
  • C# DLL loaded for exe-application is not found when launching similar DLL by rundll32.exe
  • Debug a Windows Service with WCF library
  • Open a file from an external assembly?
  • Servicestack RegistrationFeature Unable to bind request
  • Index was outside the bounds of the array confusion
  • Error in Xml to List code. The ':' character, hexadecimal value 0x3A, cannot be included in a name
  • I am trying to do a while loop with a string conditional statement in C#
  • C# 'Cannot access a disposed object. Object name: 'SslStream'.'
  • How to make Gecko use seperate CookieContainer per instance?
  • C# Advanced form "please wait"
  • Send and Receive data C# using network stream
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org