private static void GenerateFilterPropertyMembers(CodeTypeDeclaration genClass, Type entityType)
{
foreach (
PropertyInfo pi in
entityType.GetInstanceProperties().Where(pi => FilterPropertyTypes.Contains(pi.PropertyType)))
{
string fieldName = string.Format("_Filter{0}", pi.Name);
string propertyName = string.Format("Filter{0}", pi.Name);
bool isValueType = pi.PropertyType.IsValueType;
bool isNullable = (pi.PropertyType.IsGenericType &&
pi.PropertyType.GetGenericTypeDefinition() == typeof(Nullable <>));
string fieldType = isValueType && !isNullable
? string.Format("System.Nullable<{0}>", pi.PropertyType)
: pi.PropertyType.FullName;
#region field
//generate field
var clsMember = new CodeMemberField
{
Name = string.Format(fieldName),
Attributes = MemberAttributes.Private,
Type = new CodeTypeReference(fieldType)
};
genClass.Members.Add(clsMember);
#endregion
#region Property
//generate property getter and setter
var property = new CodeMemberProperty
{
Name = string.Format(propertyName),
Type = new CodeTypeReference(fieldType),
Attributes = MemberAttributes.Public
};
//Add [Display] Attribute
property.DefineDisplayAttribute(null, true);
var codeFieldReferenceExpression = new CodeFieldReferenceExpression(new CodeThisReferenceExpression(),
fieldName);
var codePropertySetValueReferenceExpression = new CodePropertySetValueReferenceExpression();
#region getter
property.GetStatements.Add(new CodeMethodReturnStatement(codeFieldReferenceExpression));
#endregion
#region setter
//if (_PropValue == value) return;
property.SetStatements.Add(
new CodeConditionStatement(new CodeBinaryOperatorExpression(codeFieldReferenceExpression,
CodeBinaryOperatorType.ValueEquality,
codePropertySetValueReferenceExpression),
new CodeMethodReturnStatement()));
var beforeVariableDeclaration = new CodeVariableDeclarationStatement(typeof(object), "before");
var beforeVariableReference = new CodeVariableReferenceExpression("before");
//object before;
property.SetStatements.Add(beforeVariableDeclaration);
//before = _PropValue;
property.SetStatements.Add(new CodeAssignStatement(beforeVariableReference,
codeFieldReferenceExpression));
//_PropValue = value;
property.SetStatements.Add(new CodeAssignStatement(codeFieldReferenceExpression,
codePropertySetValueReferenceExpression));
var onPropertyChangedMethodReference =
new CodeMethodReferenceExpression(new CodeThisReferenceExpression(), "OnPropertyChanged");
//OnPropertyChanged("PropertyName",before,value)
property.SetStatements.Add(new CodeMethodInvokeExpression(onPropertyChangedMethodReference,
new CodePrimitiveExpression(propertyName),
beforeVariableReference,
codePropertySetValueReferenceExpression));
#endregion
genClass.Members.Add(property);
#endregion
}
}
public static CodePropertyReferenceExpression DefineProperty(this Type fieldType,
CodeTypeDeclaration codeTypeDeclaration,
CodeFieldReferenceExpression
codeFieldReferenceExpression,
string propertyName,
bool?autoGenerateField = null,
bool?autoGenerateFilter = null,
Action <CodeMemberProperty> customization = null)
{
//var propertyName = string.Format("{0}{1}", propertyNamePrefix, propertyInfo.Name);
//var fieldType = propertyInfo.PropertyType.FullName;
//generate property getter and setter
var property = new CodeMemberProperty
{
Name = string.Format(propertyName),
Type = new CodeTypeReference(fieldType),
Attributes = MemberAttributes.Public
};
//Add [Display] Attribute
property.DefineDisplayAttribute(autoGenerateField, autoGenerateFilter);
var codePropertySetValueReferenceExpression = new CodePropertySetValueReferenceExpression();
#region getter
property.GetStatements.Add(new CodeMethodReturnStatement(codeFieldReferenceExpression));
#endregion
#region setter
//if (_PropValue == value) return;
property.SetStatements.Add(
new CodeConditionStatement(new CodeBinaryOperatorExpression(codeFieldReferenceExpression,
CodeBinaryOperatorType.ValueEquality,
codePropertySetValueReferenceExpression),
new CodeMethodReturnStatement()));
var beforeVariableDeclaration = new CodeVariableDeclarationStatement(typeof(object), "before");
var beforeVariableReference = new CodeVariableReferenceExpression("before");
//object before;
property.SetStatements.Add(beforeVariableDeclaration);
//before = _PropValue;
property.SetStatements.Add(new CodeAssignStatement(beforeVariableReference,
codeFieldReferenceExpression));
//_PropValue = value;
property.SetStatements.Add(new CodeAssignStatement(codeFieldReferenceExpression,
codePropertySetValueReferenceExpression));
var onPropertyChangedMethodReference =
new CodeMethodReferenceExpression(new CodeThisReferenceExpression(), "OnPropertyChanged");
//OnPropertyChanged("PropertyName",before,value)
property.SetStatements.Add(new CodeMethodInvokeExpression(onPropertyChangedMethodReference,
new CodePrimitiveExpression(propertyName),
beforeVariableReference,
codePropertySetValueReferenceExpression));
#endregion
//customize definition...
if (customization != null)
{
customization(property);
}
var codePropertyReferenceExpression = new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), propertyName);
return(codePropertyReferenceExpression);
}
