Fix build warnings (#534)

* Few build warnings fixed.

Author: gvreddy04

BlazorBootstrap.Demo.RCL/Models/Customer.cs

@@ -1,3 +1,3 @@
 namespace BlazorBootstrap.Demo.RCL.Models;
 
-public record Customer(int CustomerId, string CustomerName);
+public record Customer(int CustomerId, string? CustomerName);

BlazorBootstrap.Demo.RCL/Models/Customer2.cs

@@ -3,10 +3,10 @@
 public record Customer2
 (
     int CustomerId,
-    string CustomerName,
-    string Phone,
-    string Email,
-    string Address,
-    string PostalZip,
-    string Country
+    string? CustomerName,
+    string? Phone,
+    string? Email,
+    string? Address,
+    string? PostalZip,
+    string? Country
 );

BlazorBootstrap.Demo.RCL/Models/Department.cs

@@ -2,7 +2,7 @@
 
 public class Department
 {
-    public string Name { get; set; }
+    public string? Name { get; set; }
     public List<Employee1> Employees { get; set; }
 
     public Department(string name, List<Employee1> employees)

BlazorBootstrap.Demo.RCL/Models/Employee.cs

@@ -3,9 +3,9 @@
 public class Employee
 {
     public int Id { get; set; }
-    public string FirstName { get; set; }
-    public string LastName { get; set; }
-    public string Designation { get; set; }
+    public string? FirstName { get; set; }
+    public string? LastName { get; set; }
+    public string? Designation { get; set; }
     public decimal Salary { get; set; }
     public DateTime DOJ { get; set; }
     public bool IsActive { get; set; }

BlazorBootstrap.Demo.RCL/Models/Employee1.cs

@@ -3,8 +3,8 @@
 public record class Employee1
 {
     public int Id { get; set; }
-    public string Name { get; set; }
-    public string Designation { get; set; }
+    public string? Name { get; set; }
+    public string? Designation { get; set; }
     public DateOnly DOJ { get; set; }
     public bool IsActive { get; set; }
 }

BlazorBootstrap.Demo.RCL/Models/Employee2.cs

@@ -3,8 +3,8 @@
 public record class Employee2
 {
     public int Id { get; init; }
-    public string Name { get; init; }
-    public string Designation { get; init; }
+    public string? Name { get; init; }
+    public string? Designation { get; init; }
     public decimal Salary { get; init; }
     public bool IsActive { get; init; }
 }

BlazorBootstrap.Demo.RCL/Models/Employee3.cs

@@ -3,11 +3,11 @@
 public record class Employee3
 {
     public int Id { get; init; }
-    public string FirstName { get; init; }
-    public string LastName { get; init; }
-    public string Email { get; set; }
-    public string Company { get; set; }
-    public string Designation { get; init; }
+    public string? FirstName { get; init; }
+    public string? LastName { get; init; }
+    public string? Email { get; set; }
+    public string? Company { get; set; }
+    public string? Designation { get; init; }
     public DateOnly DOJ { get; init; }
     public decimal Salary { get; init; }
     public bool IsActive { get; init; }

BlazorBootstrap.Demo.RCL/Models/Employee4.cs

@@ -3,8 +3,8 @@
 public record class Employee4
 {
     public int? Id { get; set; }
-    public string Name { get; set; }
-    public string Designation { get; set; }
+    public string? Name { get; set; }
+    public string? Designation { get; set; }
     public DateOnly? DOJ { get; set; }
     public bool IsActive { get; set; }
 }

BlazorBootstrap.Demo.RCL/Pages/Alerts/Alert_Demo_04_Dismissing_B.razor

@@ -3,6 +3,6 @@
 </Alert>
 
 @code {
-    Alert warningAlert;
-    private async Task CloseAlert() => await warningAlert?.CloseAsync();
-}
+    Alert warningAlert = default!;
+    private async Task CloseAlert() => await warningAlert.CloseAsync();
+}

BlazorBootstrap.Demo.RCL/Pages/Breadcrumb/Breadcrumb_Demo_01_Examples.razor

@@ -1,23 +1,23 @@
-<Breadcrumb Items="NavItems1" />
-<Breadcrumb Items="NavItems2" />
+<Breadcrumb Items="navItems1" />
+<Breadcrumb Items="navItems2" />
 
 @code {
-    private List<BreadcrumbItem> NavItems1 { get; set; }
-    private List<BreadcrumbItem> NavItems2 { get; set; }
+    private List<BreadcrumbItem>? navItems1;
+    private List<BreadcrumbItem>? navItems2;
 
     protected override void OnInitialized()
     {
-        NavItems1 = new List<BreadcrumbItem>
+        navItems1 = new List<BreadcrumbItem>
         {
             new BreadcrumbItem{ Text = "Home", Href ="/" },
             new BreadcrumbItem{ Text = "Breadcrumb", IsCurrentPage = true }
         };
 
-        NavItems2 = new List<BreadcrumbItem>
+        navItems2 = new List<BreadcrumbItem>
         {
             new BreadcrumbItem{ Text = "Home", Href ="/" },
             new BreadcrumbItem{ Text = "Docs", Href ="/docs" },
             new BreadcrumbItem{ Text = "Breadcrumb", IsCurrentPage = true }
         };
     }
-}
+}