Hi,
I need to bind dynamic columns into an instance of griddatacontrol. I can bind first column into the grid. However, when I tried to bind the second column the application threw me the error of "Value cannot be null".
Following is the code and error message.
CODE:
public partial class TestWindow : Window
{
public TestWindow()
{
InitializeComponent();
Test();
}
private void Test()
{
try
{
InitializeComponent();
GetDataGridTemplateColumn();
}
catch (Exception) { throw; }
}
private void GetDataGridTemplateColumn()//List<VehicleViewModel> vehicles, string columnHeader, bool canUserReorderProperty, bool isReadOnlyProperty, string converterParameter)
{
try
{
var dataGridViewSource = ((System.Windows.Data.CollectionViewSource)(this.FindResource("dataGridViewSource")));
dataGridViewSource.Source = TestData();
GridDataVisibleColumn column = new GridDataVisibleColumn();
Binding binding1 = new Binding();
binding1.Path = new PropertyPath("Data");
binding1.ConverterParameter = "000";
binding1.Converter = new ValueConverter1();
column.Binding = binding1;
column.DataType = DataType.String;
column.HeaderText = "000";
gdcInfillWorksheet.VisibleColumns.Add(column);
column = new GridDataVisibleColumn();
Binding binding2 = new Binding();
binding2.ConverterParameter = "1111";
binding2.Path = new PropertyPath("Data");
binding2.Converter = new ValueConverter1();
column.Binding = binding2;
column.HeaderText = "1111";
gdcInfillWorksheet.VisibleColumns.Add(column);
}
catch (Exception) { throw; }
}
private ObservableCollection<InfillWorksheetRowViewModel> TestData()
{
try
{
InfillWorksheetRowViewModel row = new InfillWorksheetRowViewModel();
InfillWorksheetCell cell = new InfillWorksheetCell(0, 0, 0, SystemConstant.SpecificationDataType.Text, "Row 1");
row["000"] = cell;
cell = new InfillWorksheetCell(1, 1, 11, SystemConstant.SpecificationDataType.Text, "spec value 1");
row["1111"] = cell;
ObservableCollection<InfillWorksheetRowViewModel> testData = new ObservableCollection<InfillWorksheetRowViewModel>();
testData.Add(row);
return testData;
}
catch (Exception) { throw; }
}
private void Click_btnSave(object sender, RoutedEventArgs e)
{
}
}
public class ValueConverter1 : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
InfillWorksheetRowViewModel row = value as InfillWorksheetRowViewModel;
string index = parameter as string;
return row[index].Data;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new Exception();
}
}
ERROR:
System.ArgumentNullException was unhandled
Message=Value cannot be null.
Parameter name: source
Source=System.Core
ParamName=source
StackTrace:
at System.Linq.Enumerable.Contains[TSource](IEnumerable`1 source, TSource value, IEqualityComparer`1 comparer)
at System.Linq.Enumerable.Contains[TSource](IEnumerable`1 source, TSource value)
at Syncfusion.Windows.Data.EnumerableRecordsWrapper..ctor(IEnumerable source, CollectionViewAdv view)
at Syncfusion.Windows.Data.EnumerableRecordsWrapper.CreateNew(IEnumerable source, CollectionViewAdv view)
at Syncfusion.Windows.Controls.Grid.GridDataQueryableCollectionViewWrapper.CreateRecords()
at Syncfusion.Windows.Data.CollectionViewAdv.EnsureInitialized()
at Syncfusion.Windows.Data.CollectionViewAdv.get_Records()
at Syncfusion.Windows.Controls.Grid.GridDataTableModel.RefreshSourceListCountMethod()
at Syncfusion.Windows.Controls.Grid.GridDataTableModel.RefreshSourceListCount()
at Syncfusion.Windows.Controls.Grid.GridDataTableModel.RefreshDisplayMethod(Boolean needsRefreshTable)
at Syncfusion.Windows.Controls.Grid.GridDataTableModel.RefreshDisplay(Boolean needsRefreshTable)
at Syncfusion.Windows.Controls.Grid.GridDataTableModel.EnsureInitialized()
at Syncfusion.Windows.Controls.Grid.GridDataTableModel.get_Table()
at Syncfusion.Windows.Controls.Grid.GridDataVisibleColumns.ValidateColumn(GridDataVisibleColumn v)
at Syncfusion.Windows.Controls.Grid.GridDataVisibleColumns.SetTableModel(GridDataTableModel model)
at Syncfusion.Windows.Controls.Grid.GridDataTableModel.SetSourceList(Object itemsSource, Boolean changeOriginalSource, Boolean needsWholeGridRefresh, ICollectionViewAdv collectionView)
at Syncfusion.Windows.Controls.Grid.GridDataTableProperties.OnItemsSourcePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs args)
at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
at System.Windows.Freezable.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
at Syncfusion.Windows.Controls.Grid.GridDataTableProperties.set_ItemsSource(Object value)
at Syncfusion.Windows.Controls.Grid.GridDataControl.HookGrid()
at Syncfusion.Windows.Controls.Grid.GridDataControl.OnApplyTemplate()
at System.Windows.FrameworkElement.ApplyTemplate()
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)
at System.Windows.Controls.Grid.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Border.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Control.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Grid.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Documents.AdornerDecorator.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Border.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Window.MeasureOverrideHelper(Size constraint)
at System.Windows.Window.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Interop.HwndSource.SetLayoutSize()
at System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)
at System.Windows.Interop.HwndSource.set_RootVisual(Visual value)
at System.Windows.Window.SetRootVisual()
at System.Windows.Window.SetRootVisualAndUpdateSTC()
at System.Windows.Window.SetupInitialState(Double requestedTop, Double requestedLeft, Double requestedWidth, Double requestedHeight)
at System.Windows.Window.CreateSourceWindow(Boolean duringShow)
at System.Windows.Window.CreateSourceWindowDuringShow()
at System.Windows.Window.SafeCreateWindowDuringShow()
at System.Windows.Window.ShowHelper(Object booleanBox)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.DispatcherOperation.InvokeImpl()
at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
at System.Threading.ExecutionContext.runTryCode(Object userData)
at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Threading.DispatcherOperation.Invoke()
at System.Windows.Threading.Dispatcher.ProcessQueue()
at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
at System.Windows.Application.RunDispatcher(Object ignore)
at System.Windows.Application.RunInternal(Window window)
at System.Windows.Application.Run(Window window)
at System.Windows.Application.Run()
at Polk.PSDET.Client.App.Main() in D:\P&S Project\New Code\Polk.PSDET\Polk.PSDET.Client\obj\x86\Debug\App.g.cs:line 0
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:
