/// <summary>
/// Validates the value of current cell.
/// </summary>
/// <param name="currentCell">
/// The current cell that is to validated.
/// </param>
/// <param name="propertyName">
/// The propertyName.
/// </param>
/// <param name="dataModel">
/// The dataModel.
/// </param>
/// <returns>
/// <b>true</b> if the validation is successful; otherwise, <b>false</b>.
/// </returns>
internal static bool Validate(TreeGridCell currentCell, string propertyName, object dataModel)
{
bool hasError = false;
var itemproperties = currentCell.ColumnBase.TreeGridColumn.TreeGrid.View.GetItemProperties();
// WPF-25016 Using PropertyDescriptorExtensions for WPF and PropertyInfoExtensions for WinRT, the codes are cleaned up
if (propertyName.Contains('.'))
{
var propNames = propertyName.Split('.');
propertyName = propNames[propNames.Length - 1];
Array.Resize(ref propNames, propNames.Length - 1);
var pName = string.Join(".", propNames);
#if WPF
dataModel = PropertyDescriptorExtensions.GetValue(itemproperties, dataModel, pName);
#else
dataModel = PropertyInfoExtensions.GetValue(itemproperties, dataModel, pName);
#endif
}
if (dataModel == null)
{
return(hasError);
}
#if WPF
var dataValidation = dataModel as IDataErrorInfo;
if (dataValidation != null)
{
string errormessage = dataValidation[propertyName];
hasError = !String.IsNullOrEmpty(errormessage);
if (hasError)
{
currentCell.bindingErrorMessage = errormessage;
}
currentCell.ApplyValidationVisualState();
return(!hasError);
}
#endif
#if !SyncfusionFramework4_0 || UWP
hasError = !ValidateINotifyDataErrorInfo(currentCell, propertyName, dataModel);
#endif
return(!hasError);
}
internal static bool ValidateINotifyDataErrorInfo(TreeGridCell currentCell, string propertyName, object dataModel)
{
bool hasError = false;
var dataErrorValidation = dataModel as INotifyDataErrorInfo;
currentCell.bindingErrorMessage = string.Empty;
if (dataErrorValidation != null)
{
var errorList = dataErrorValidation.GetErrors(propertyName);
if (errorList != null)
{
var errorMessage = errorList.Cast <string>().FirstOrDefault();
hasError = !String.IsNullOrEmpty(errorMessage);
if (hasError)
{
currentCell.bindingErrorMessage = errorMessage;
}
}
currentCell.ApplyValidationVisualState();
}
return(!hasError);
}
internal bool ValidateColumn(object rowData, string columnName, TreeGridCell currentCell, RowColumnIndex currentCellIndex)
{
var propertyName = columnName;
bool isValid = true;
var errorMessage = string.Empty;
bool isAttributeError = false;
if (rowData == null || string.IsNullOrEmpty(columnName) || currentCell == null || currentCellIndex == RowColumnIndex.Empty)
{
return(isValid);
}
#if UWP
PropertyInfoCollection itemProperties;
#else
PropertyDescriptorCollection itemProperties;
#endif
if (this.treeGrid.HasView)
{
itemProperties = this.treeGrid.View.GetItemProperties();
if (itemProperties == null)
{
return(isValid);
}
}
else
{
#if WPF
itemProperties = TypeDescriptor.GetProperties(rowData.GetType());
#else
itemProperties = new PropertyInfoCollection(rowData.GetType());
#endif
}
if (columnName.Contains('.'))
{
var propNames = columnName.Split('.');
columnName = propNames[propNames.Length - 1];
Array.Resize(ref propNames, propNames.Length - 1);
var pName = string.Join(".", propNames);
#if WPF
rowData = PropertyDescriptorExtensions.GetValue(itemProperties, rowData, pName);
#else
rowData = Syncfusion.Data.PropertyInfoExtensions.GetValue(itemProperties, rowData, pName);
#endif
}
PropertyInfo propertyinfo = null;
ValidationContext validationContext = null;
#if WPF
if (rowData != null)
{
propertyinfo = rowData.GetType().GetProperty(columnName);
validationContext = new ValidationContext(rowData, null, null)
{
MemberName = columnName
};
}
#else
if (rowData != null)
{
propertyinfo = rowData.GetType().GetRuntimeProperties().FirstOrDefault(x => x.Name == columnName);
validationContext = new ValidationContext(rowData)
{
MemberName = columnName
};
}
#endif
if (errorMessages != null && rowIndex == currentCellIndex.RowIndex && errorMessages.Keys.Contains(columnName) && IsCurrentRowValidated)
{
errorMessage = errorMessages[columnName];
}
if ((this.treeGrid.Columns[propertyName] as TreeGridColumn).GridValidationMode != GridValidationMode.None)
{
if (propertyinfo != null)
{
var validationAttribute = propertyinfo.GetCustomAttributes(false).OfType <ValidationAttribute>();
var value = propertyinfo.GetValue(rowData, null);
var results = new List <System.ComponentModel.DataAnnotations.ValidationResult>();
try
{
if (!Validator.TryValidateValue(value, validationContext, results, validationAttribute))
{
foreach (var result in results)
{
errorMessage = !string.IsNullOrEmpty(errorMessage) ? errorMessage + string.Format("\n") + result.ErrorMessage : errorMessage + result.ErrorMessage;
}
isValid = false;
isAttributeError = true;
}
}
catch (Exception e)
{
errorMessage = e.Message;
isValid = false;
isAttributeError = true;
}
}
}
if (currentCell != null)
{
if (!isValid || !string.IsNullOrEmpty(errorMessage))
{
currentCell.SetError(errorMessage, isAttributeError);
}
else
{
currentCell.RemoveError(true);
}
}
#if !SyncfusionFramework4_0 || UWP
if (rowData is INotifyDataErrorInfo)
{
isValid = isValid && TreeGridDataValidation.ValidateINotifyDataErrorInfo(currentCell, columnName, rowData);
}
#endif
return(isValid);
}