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How to use Tabs in ASP.NET CORE

By Jacob
I want to show Components in a tabs , so first of all create few components. In this project we have three components, First View Component  public class AllViewComponent : ViewComponent     {         private readonly UserManager<ApplicationUser> _userManager;         public AllViewComponent(UserManager<ApplicationUser> userManager)         {             _userManager = userManager;         }         public async Task<IViewComponentResult> InvokeAsync()         {             List<StudentViewModel> allUsers = new List<StudentViewModel>();             var items = await _userManager.Users.ToListAsync();             foreach (var item in items)             {                 allUsers.Add(new StudentViewModel {Id=item.Id, EnrollmentNo = item.EnrollmentNo, FatherName = item.FatherName, Name = item.Name, Age = item.Age, Birthdate = item.Birthdate, Address = item.Address, Gender = item.Gender, Email = item.Email });             }            
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Item selection required for ListBox in ASP.NET

By Jacob
If you want to do it in asp.net that your website visitor select any one option in given ListBox item. Use Required Field Validator for this type of problem, also set initial value. If your initial value is match with your selected item, error message generated on client machine. lets do it in asp.net with sort code example

Selection is required 

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <strong>Selection Required<br />
        </strong>
    </div>
        <asp:ListBox ID="ListBox1" runat="server" Height="132px" Width="147px">
            <asp:ListItem>Select Control</asp:ListItem>
            <asp:ListItem>Button Control</asp:ListItem>
            <asp:ListItem>Calendar Control</asp:ListItem>
            <asp:ListItem>CheckBox Control</asp:ListItem>
            <asp:ListItem>FileUpload Control</asp:ListItem>
    </asp:ListBox>
    &nbsp;<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" 
        ControlToValidate="ListBox1" ForeColor="Red" InitialValue="Select Control">Please Select Control</asp:RequiredFieldValidator>
    <br />
    <br />
    <asp:Button ID="Button1" runat="server" Text="Submit" />
    </form>
</body>
</html>

Code Generate the following output

Item selection required for ListBox in ASP.NET

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How to use Tabs in ASP.NET CORE

By Jacob
I want to show Components in a tabs , so first of all create few components. In this project we have three components, First View Component  public class AllViewComponent : ViewComponent     {         private readonly UserManager<ApplicationUser> _userManager;         public AllViewComponent(UserManager<ApplicationUser> userManager)         {             _userManager = userManager;         }         public async Task<IViewComponentResult> InvokeAsync()         {             List<StudentViewModel> allUsers = new List<StudentViewModel>();             var items = await _userManager.Users.ToListAsync();             foreach (var item in items)             {                 allUsers.Add(new StudentViewModel {Id=item.Id, EnrollmentNo = item.EnrollmentNo, FatherName = item.FatherName, Name = item.Name, Age = item.Age, Birthdate = item.Birthdate, Address = item.Address, Gender = item.Gender, Email = item.Email });             }            
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Polynomial representation using Linked List for Data Structure in 'C'

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Print the asp.net webpage using button

By Jacob
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