SeanJ Comments - Answer Overflow

SeanJ

•Created by Richards on 11/17/2023 in #help

No inbuilt functions

For the second part find the middle by deviding the length by two and then do a loop of some sort to achieve what you're trying to achieve

14 replies

CC#

•Created by Shinigami on 11/17/2023 in #help

✅ ValidationContext in ASP.NET

Are the dates really nullable if you're requiring dates?

31 replies

CC#

•Created by Shinigami on 11/17/2023 in #help

✅ ValidationContext in ASP.NET

var model = (User)validationContext.ObjectInstance; Exactly, the above now gives you access to your whole model and it's properties. Something to consider though: 1. Do you really want to just apply the validation to one out out of the two properties? Why? Well errors/feedback, you may want to have 1 error on the FromDate and another on the TooDate that feedbacks to the user

31 replies

CC#

•Created by Shinigami on 11/17/2023 in #help

✅ ValidationContext in ASP.NET

Above is pseudocode but you get the picture 🙂

31 replies

CC#

•Created by Shinigami on 11/17/2023 in #help

✅ ValidationContext in ASP.NET

You can use validationContext if you want to gain a more granular access to the context of validation. For exmple your above could literally just be this:

protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
         var dateTo = Convert.ToDateTime(value);
    }

protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
         var dateTo = Convert.ToDateTime(value);
    }

31 replies

CC#

•Created by Shinigami on 11/17/2023 in #help

✅ ValidationContext in ASP.NET

Sounds like you're beginning to understand it. Do you have the whole method? In theory Convert.ToDateTime(otherproperty.GetValue(validationContext.ObjectInstance)); is redundant as if you look at my above the Override for ValidationResult passes the value in directly.

31 replies

CC#

•Created by Shinigami on 11/17/2023 in #help

✅ ValidationContext in ASP.NET

Think of it as like the context of what's being validated. Look at my recent code for example:

protected override ValidationResult IsValid(object value, ValidationContext validationContext)
        {
            var model = (PriorityServiceRegister)validationContext.ObjectInstance;
            string fieldName = validationContext.MemberName;

            if (model.PowerType == PowerType.Solar && fieldName == "SolarSerial")
        ... 
        }

protected override ValidationResult IsValid(object value, ValidationContext validationContext)
        {
            var model = (PriorityServiceRegister)validationContext.ObjectInstance;
            string fieldName = validationContext.MemberName;

            if (model.PowerType == PowerType.Solar && fieldName == "SolarSerial")
        ... 
        }

It provides you access to the context of that validation that's being run (Sorry if this is a bad explanation). I can now view all the properties on my model and see their values etc. Hence why you use it to get the value of whatever property you're validating

31 replies

CC#

•Created by Shinigami on 11/17/2023 in #help

✅ ValidationContext in ASP.NET

Yeh essentially

31 replies

CC#

•Created by Shinigami on 11/17/2023 in #help

✅ ValidationContext in ASP.NET

PropertyInfo? otherproperty = validationContext.ObjectType.GetProperty(PropertyName);

PropertyInfo? otherproperty = validationContext.ObjectType.GetProperty(PropertyName);

ObjectType would refer to the classtype so as you described 'Model Class'

31 replies

CC#

•Created by ! dubby on 5/21/2023 in #help

❔ ✅ C# .NET issue, pretty simple problem but im new lol

MessageBox.Show("Successfully Registered! + (Username.Text)", "KeyAuth", MessageBoxButtons.OK, MessageBoxIcon.Information); The errors I see here is string interpolation as IceGPT said. Just so you fully understand. To use string interpolation you need to do this:

var myString = $"{var.property}";

var myString = $"{var.property}";

We include a $ sign before the string and encapsulate your variables in {} rather than round brackets not this:

var myString = $"(var.property)";

var myString = $"(var.property)";

30 replies

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