public static T TryParse <T>(string value, T defaultValue)
{
object r = null;
using (ErrorScope es = new ErrorScope())
{
if (TryParse(typeof(T), value, out r))
{
return((T)r);
}
else
{
es.IgnoreError <ErrorInfo>();
}
}
return(defaultValue);
}
protected virtual void DoGetFromForm()
{
foreach (PropertyInfo propertyInfo in GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance | BindingFlags.FlattenHierarchy))
{
if (!propertyInfo.IsDefined(typeof(FilterItemAttribute), true))
{
continue;
}
FilterItemAttribute attribute = (FilterItemAttribute)(propertyInfo.GetCustomAttributes(typeof(FilterItemAttribute), true)[0]);
string formName = attribute.FormName;
if (string.IsNullOrEmpty(formName))
{
formName = propertyInfo.Name;
}
string text = HttpContext.Current.Request.Form[formName];
if (text != null)
{
//此时可以认为Filter不为空
if (IsNull)
{
this.IsNull = false;
}
switch (Type.GetTypeCode(propertyInfo.PropertyType))
{
case TypeCode.String:
text = HttpUtility.HtmlEncode(text);
propertyInfo.SetValue(this, text, null);
break;
default:
//暂时先这么写了，以后要改善这部分的设计
if (attribute.FormType == FilterItemFormType.BeginDate || attribute.FormType == FilterItemFormType.EndDate)
{
DateTime?date = null;
if (!string.IsNullOrEmpty(text))
{
using (ErrorScope es = new ErrorScope())
{
if (attribute.FormType == FilterItemFormType.EndDate)
{
date = DateTimeUtil.ParseEndDateTime(text);
}
else if (attribute.FormType == FilterItemFormType.BeginDate)
{
date = DateTimeUtil.ParseBeginDateTime(text);
}
es.IgnoreError <ErrorInfo>();
}
propertyInfo.SetValue(this, date, null);
}
break;
}
if (propertyInfo.PropertyType == typeof(ExtendedFieldSearchInfo))
{
propertyInfo.SetValue(this, ExtendedFieldSearchInfo.Parse(text), null);
}
else
{
object objValue;
using (ErrorScope es = new ErrorScope())
{
if (StringUtil.TryParse(propertyInfo.PropertyType, text, out objValue))
{
propertyInfo.SetValue(this, objValue, null);
}
es.IgnoreError <ErrorInfo>();
}
}
break;
}
}
}
}
protected virtual void DoParse(string value)
{
if (string.IsNullOrEmpty(value))
{
return;
}
try
{
value = SecurityUtil.DesDecode(value);
}
catch
{
return;
}
int index = value.IndexOf('|');
if (index < 1)
{
return;
}
int[] valueLengths = StringUtil.Split <int>(value.Substring(0, index), ',');
if (valueLengths.Length == 0)
{
return;
}
//此时可以认为Filter不为空
this.IsNull = false;
index++;
int i = 0;
foreach (PropertyInfo propertyInfo in GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance | BindingFlags.FlattenHierarchy))
{
if (!propertyInfo.IsDefined(typeof(FilterItemAttribute), true))
{
continue;
}
if (valueLengths.Length <= i)
{
break;
}
int valueLength = valueLengths[i];
FilterItemAttribute attribute = (FilterItemAttribute)(propertyInfo.GetCustomAttributes(typeof(FilterItemAttribute), true)[0]);
string text = value.Substring(index, valueLength);
switch (Type.GetTypeCode(propertyInfo.PropertyType))
{
case TypeCode.Boolean:
if (text == "1")
{
propertyInfo.SetValue(this, true, null);
}
else
{
propertyInfo.SetValue(this, false, null);
}
break;
case TypeCode.String:
propertyInfo.SetValue(this, text, null);
break;
default:
//暂时先这么写了，以后要改善这部分的设计
if (attribute.FormType == FilterItemFormType.BeginDate || attribute.FormType == FilterItemFormType.EndDate)
{
DateTime?date = null;
if (!string.IsNullOrEmpty(text))
{
using (ErrorScope es = new ErrorScope())
{
if (attribute.FormType == FilterItemFormType.EndDate)
{
date = DateTimeUtil.ParseEndDateTime(text);
}
else if (attribute.FormType == FilterItemFormType.BeginDate)
{
date = DateTimeUtil.ParseBeginDateTime(text);
}
es.IgnoreError <ErrorInfo>();
}
propertyInfo.SetValue(this, date, null);
}
break;
}
if (propertyInfo.PropertyType == typeof(ExtendedFieldSearchInfo))
{
propertyInfo.SetValue(this, ExtendedFieldSearchInfo.Parse(text), null);
}
else
{
object objValue;
using (ErrorScope es = new ErrorScope())
{
if (StringUtil.TryParse(propertyInfo.PropertyType, text, out objValue))
{
propertyInfo.SetValue(this, objValue, null);
}
es.IgnoreError <ErrorInfo>();
}
}
break;
}
index += valueLength;
i++;
}
}