我正在考虑在验证规则中使用反射。用户可以在 WPF 数据网格中输入值,而数据网格的每个单元格表示基础模型的属性(当然)。
为了避免手动检查单元格是否包含无效字符(';'),每个单元格(属性)都有一个 if 语句,我打算使用反射来检查。...但是如何在BindigGroup
中获取所用类的类型?这可能吗?
public class MyValidationRule : ValidationRule
{
public override ValidationResult Validate(object value,
System.Globalization.CultureInfo cultureInfo)
{
BindingGroup group = (BindingGroup)value;
StringBuilder error = null;
foreach (var item in group.Items)
{
IDataErrorInfo info = item as IDataErrorInfo;
if (info != null)
{
if (!string.IsNullOrEmpty(info.Error))
{
if (error == null)
{
error = new StringBuilder();
}
Type type = typeof(MyClass);
PropertyInfo[] properties = type.GetProperties();
foreach (PropertyInfo property in properties)
{
Console.WriteLine(property.GetValue(property.Name, null));
if (property.GetValue(property.Name, null).ToString().Contains(";"))
{
error.Append(property.Name + " may not contain a ';'.");
}
}
error.Append((error.Length != 0 ? ", " : "") + info.Error);
}
}
}
if (error != null)
return new ValidationResult(false, error.ToString());
else
return new ValidationResult(true, "");
}
}
我找到了这个解决方案:
Type type = item.GetType();
PropertyInfo[] properties = type.GetProperties();
foreach (PropertyInfo property in properties)
{
Console.WriteLine(property.GetValue(item));
if ( property.GetValue(item).ToString().Contains(";") )
{
error.Append(property.Name + " may not contain a ';'.");
}
}