/// <summary>
/// Method will subscibe and unsubsribe Error changed event
/// Get bindable property path of text property
/// </summary>
public void CheckValidation()
{
// Reset variables values
ErrorMessage = "";
HasError = false;
BindingPath = "";
if (_NotifyErrors != null)
{
// Unsubscribe event
_NotifyErrors.ErrorsChanged += _NotifyErrors_ErrorsChanged;
_NotifyErrors = null; // Set null value on binding context change
}
// Remove notify scroll to property
if (_NotifyScroll != null)
{
_NotifyScroll.ScrollToProperty -= NotifyScroll_ScrollToProperty;
_NotifyScroll = null;
}
// Do nothing if show error message property value is false
if (!this.ShowErrorMessage || this.View is null)
{
return;
}
if (this.View.BindingContext != null && this.View.BindingContext is INotifyDataErrorInfo)
{
// Get
_NotifyErrors = this.View.BindingContext as INotifyDataErrorInfo;
if (_NotifyErrors == null)
{
return;
}
// Subscribe event
_NotifyErrors.ErrorsChanged += _NotifyErrors_ErrorsChanged;
// Remove notify scroll to property
if (this.View.BindingContext is INotifyScrollToProperty)
{
_NotifyScroll = this.View.BindingContext as INotifyScrollToProperty;
_NotifyScroll.ScrollToProperty += NotifyScroll_ScrollToProperty;
}
this.BindingPath = this.View.GetBindingPath(BindableProperty);
SetPlaceHolder();
}
}
/// <summary>
/// Method will subscibe and unsubsribe Error changed event
/// Get bindable property path of text property
/// </summary>
public void CheckValidation()
{
// Reset variables values
// Set 'HasError' = false
// Set 'ErrorMessage' = "";
InvokeSetPrivatePropertyAction(false, "");
BindingPath = "";
//this.Placeholder = "";
if (_NotifyErrors != null)
{
// Unsubscribe event
_NotifyErrors.ErrorsChanged += _NotifyErrors_ErrorsChanged;
_NotifyErrors = null; // Set null value on binding context change
}
// Remove notify scroll to property
if (_NotifyScroll != null)
{
_NotifyScroll.ScrollToProperty -= NotifyScroll_ScrollToProperty;
_NotifyScroll = null;
}
// Do nothing if show error message property value is false
if (!this._control.ShowErrorMessage)
{
return;
}
if (this._control.BindingContext != null && this._control.BindingContext is INotifyDataErrorInfo)
{
// Get
_NotifyErrors = this._control.BindingContext as INotifyDataErrorInfo;
// Return do nothing for your object
if (_NotifyErrors == null)
{
return;
}
// Remove notify scroll to property
if (_control.BindingContext is INotifyScrollToProperty)
{
_NotifyScroll = _control.BindingContext as INotifyScrollToProperty;
_NotifyScroll.ScrollToProperty += NotifyScroll_ScrollToProperty;
}
// Subscribe event
_NotifyErrors.ErrorsChanged += _NotifyErrors_ErrorsChanged;
// get property name for windows and other operating system
// for windows 10 property name will be : properties
// And other operation system its value : _properties
string condition = "properties";
// Get bindable properties
var _propertiesFieldInfo = typeof(BindableObject)
.GetRuntimeFields()
.Where(x => x.IsPrivate == true && x.Name.Contains(condition))
.FirstOrDefault();
// Get Control
var bindable = (BindableObject)_control;
// Get value
var _properties = _propertiesFieldInfo
.GetValue(bindable) as IList;
if (_properties == null)
{
return;
}
// Get first object
var fields = _properties[0]
.GetType()
.GetRuntimeFields();
// Get binding field info
FieldInfo bindingFieldInfo = fields.FirstOrDefault(x => x.Name.Equals("Binding"));
// Get property field info
FieldInfo propertyFieldInfo = fields.FirstOrDefault(x => x.Name.Equals("Property"));
foreach (var item in _properties)
{
// Now get binding and property value
Binding binding = bindingFieldInfo.GetValue(item) as Binding;
BindableProperty property = propertyFieldInfo.GetValue(item) as BindableProperty;
if (binding != null && property != null && property.PropertyName.Equals(this._toValidatePropertyName))
{
// set binding path
BindingPath = binding.Path;
SetPlaceHolder();
}
}
}
}
/// <summary>
/// Method will subscibe and unsubsribe Error changed event
/// Get bindable property path of text property
/// </summary>
public void CheckValidation()
{
// Reset variables values
// Set 'HasError' = false
// Set 'ErrorMessage' = "";
SetPrivateFields(false, "");
BindingPath = "";
//this.Placeholder = "";
if (_NotifyErrors != null)
{
// Unsubscribe event
_NotifyErrors.ErrorsChanged += _NotifyErrors_ErrorsChanged;
_NotifyErrors = null; // Set null value on binding context change
}
// Remove notify scroll to property
if (_NotifyScroll != null)
{
_NotifyScroll.ScrollToProperty -= NotifyScroll_ScrollToProperty;
_NotifyScroll = null;
}
if (string.IsNullOrEmpty(this.BindingProperty))
{
return;
}
// Set binding path
BindingPath = this.BindingProperty;
if (this.BindingContext != null && this.BindingContext is INotifyDataErrorInfo)
{
// Get
_NotifyErrors = this.BindingContext as INotifyDataErrorInfo;
// Return do nothing for your object
if (_NotifyErrors == null)
{
return;
}
// Remove notify scroll to property
if (this.BindingContext is INotifyScrollToProperty)
{
_NotifyScroll = this.BindingContext as INotifyScrollToProperty;
_NotifyScroll.ScrollToProperty += NotifyScroll_ScrollToProperty;
}
// Subscribe event
_NotifyErrors.ErrorsChanged += _NotifyErrors_ErrorsChanged;
// get property name for windows and other operating system
// for windows 10 property name will be : properties
// And other operation system its value : _properties
string condition = "properties";
// Get bindable properties
var _propertiesFieldInfo = typeof(BindableObject)
.GetRuntimeFields()
.Where(x => x.IsPrivate == true && x.Name.Contains(condition))
.FirstOrDefault();
}
}
