How to assign a variable to a modal validation Error Message

[Suryateja KONDLA]

*******  THIS IS MY ACTUAL MODAL ********

[Required(ErrorMessage = "Please enter Login Name")]
public string Login_Name { get; set; }



******** I WANT TO ACHIVE LIKE *********

public static string errormessage = "my custom error messaage";
[Required(ErrorMessage = errormessage)]
public string Login_Name { get; set; }

But i am getting an error :  An attribute argument must be a constant expression, typeof expression or array creation expression of an attribute parameter type

i am new to Blazor so please help me with a better and easy solution

Thanks In Advance

[Sureshkumar P]

Hi Suryateja, 

 

Edit form validation error message required constant string message to return validation message. So, we suggest you change the validation error message as constant string as like below to achieve your requirement.

 

Find the code example here: 

 

@using Syncfusion.Blazor.Inputs 

@using System.ComponentModel.DataAnnotations 

@using Syncfusion.Blazor.Buttons 

 

<EditForm Model="@model"> 

    <DataAnnotationsValidator /> 

    <SfTextBox @bind-Value="@model.TextName" Placeholder="enter name" FloatLabelType="FloatLabelType.Auto"></SfTextBox> 

    <ValidationMessage For="() => model.TextName" /> 

    <SfButton CssClass="e-small e-info" Content="Submit"></SfButton> 

</EditForm> 

 

@code { 

    public class CountriesModel 

    { 

        public const string errormessage = "my custom error messaage"; 

        [Required(ErrorMessage = errormessage)] 

        public string TextName { get; set; } 

    } 

    public CountriesModel model = new CountriesModel(); 

 } 

 

 

 

Find the sample here: https://www.syncfusion.com/downloads/support/directtrac/general/ze/Textbox1701323364  

 

Regards, 

Sureshkumar P