C# WPF app combobox pulldown not working correctly

Cancelled Posted Nov 17, 2011 Paid on delivery
Cancelled Paid on delivery

I have a C#, WPF app that is having a problem with the combobox pulldown. It on some occassions is not displaying either the pull down choice chosen or the correct data. I am told that i need Bind ComboBox to an ObservableCollection, so UI will get automatically updated. I do not know how to do this or locate this area. here is some of the code: I think it should not take too long, I also will have other such work as we are promoting this [url removed, login to view] someone to do this Friday AM USA Eastern time.

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class ScheduleViewModel : TabViewModel, ISelectedContentTab

{

//

private readonly String[] _assessmentType = new String[] { "All", "INCOMPLETE", "COMPLETED", "COMPLETED LATE", "INCOMPLETE LATE", "NOT STARTED - LATE", "NOT STARTED", "SUBMITTED", "SUBMITTED LATE" };

//pk display ALL as default in detail tab.

//

public ScheduleViewModel()

: base()

{

DisplayName = "Schedules";

StartDate = [url removed, login to view](-6);

EndDate = [url removed, login to view];

GroupDataCollection = new ObservableCollection<GroupData>()

{

// here is the combo box

[url removed, login to view]()

, new GroupData("Criterria"

, [url removed, login to view](StartDate,EndDate,(s, e) => { StartDate = s; EndDate = e; RefreshData(); })

, [url removed, login to view](UnitChanged)

, [url removed, login to view]("Assessment", "Assessment", "Select Assessment to show.", _assessmentType, (type) => { AssessmentType = type; })

)

};

Engineering Software Architecture Software Testing

Project ID: #3703274

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