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RadDateTimePicker Index was out range

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Calendar, DateTimePicker, TimePicker and Clock

This is a migrated thread and some comments may be shown as answers.

Brian asked on 13 Apr 2018, 02:28 PM

I am working on the Bug Tracker sample and am getting this error when I try to run the program;

System.ArgumentOutOfRangeException: 'Index was out of range.

Must be a non-negative and less than size of the collection.

Parameter name index'

Below is the offending code. I am not seeing what is wrong with this;

private void ReadOnlyControls(bool readOnly)

{

titleTextBox.ReadOnly = readOnly;

idSpinEditor.ReadOnly = readOnly;

descriptionTextBox.ReadOnly = readOnly;

stepsToReproduceTextBox.ReadOnly = readOnly;

idSpinEditor.ShowUpDownButtons = !readOnly;

dateDateTimePicker.DateTimePickerElement.TextBoxElement.TextBoxItem.ReadOnly = readOnly;

RadDateTimePickerArrowButtonElement arrowButton = dateDateTimePicker.DateTimePickerElement.Children[1].Children[1] as RadDateTimePickerArrowButtonElement;

arrowButton.Visibility = readOnly ? ElementVisibility.Collapsed : ElementVisibility.Visible;

priorityDropDownList.DropDownListElement.ArrowButton.Visibility = readOnly ? ElementVisibility.Collapsed : ElementVisibility.Visible;

priorityDropDownList.DropDownListElement.TextBox.TextBoxItem.ReadOnly = readOnly;

statusDropDownList.DropDownListElement.ArrowButton.Visibility = readOnly ? ElementVisibility.Collapsed : ElementVisibility.Visible;

statusDropDownList.DropDownListElement.TextBox.TextBoxItem.ReadOnly = readOnly;

ownerDropDownList.DropDownListElement.ArrowButton.Visibility = readOnly ? ElementVisibility.Collapsed : ElementVisibility.Visible;

ownerDropDownList.DropDownListElement.TextBox.TextBoxItem.ReadOnly = readOnly;

}

2 Answers, 1 is accepted

Accepted

answered on 16 Apr 2018, 09:23 AM

BugTracker.gif

Hello, Brian,

According to the provided information, I suppose that you are referring to the BugTracker sample project which is located in the installation folder of our suite which is usually located at the following path: C:\Program Files (x86)\Progress\Telerik UI for WinForms R1 2018\Examples\BugTracker

When I try to run the project it seems to behave as expected on my end with the latest version. Please refer to the attached gif file illustrating the behavior I observe. Am I missing something? Do I have to perform any changes in the project before running it? Could you please specify the exact steps how to reproduce the problem? Thank you in advance for your cooperation.

I am looking forward to your reply.

Regards,
Dess
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