-1
PropertyInfo[] All_prop = Get_All_prop2(Model);
//------Get Properties has Value-----
foreach (PropertyInfo property in All_prop)
{
//--Check Has Value Property
if (property.GetValue(this, null) != null)
{
IQueryable<DAL_BankWebApp.TBUSER> Query = cntx.TBUSERs.Select(x => x);
//--Create Expression Of Property
ParameterExpression pe = Expression.Parameter(typeof(string), property.Name);
ConstantExpression Constant = Expression.Constant(property.GetConstantValue());
Expression Contain = Expression.Call(pe, typeof(string).GetMethod("Contains", new[] { typeof(string) }), Constant);
//----Create Where
MethodCallExpression whereCallExpression = Expression.Call(
typeof(Queryable),
"Where",
new Type[] { Query.ElementType },
Query.Expression,
Expression.Lambda<Func<string, bool>>(Contain, new ParameterExpression[] { pe }));
IQueryable<DAL_BankWebApp.TBUSER> results = Query.Provider.CreateQuery<DAL_BankWebApp.TBUSER>(whereCallExpression);
Result = results;
}
}
я получаю ниже ошибки В => если (property.GetValue (это, нуль)! = NULL)Ошибка создания динамических Linq запросов Expression
база { "Объект не соответствует целевой тип. «} {System.ApplicationException System.Reflection.TargetException}