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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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How to validate fileupload control in asp.net also choose selected format

By Jacob
In my previous article we already discussed about file upload control. Suppose your picture is required in the form of registration then you must to validate the file upload control. Also you want to take only jpeg, gif and selected format then should use RegularExpressionValidator with regular expression. Now lets take a simple example.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default5.aspx.cs" Inherits="Default5" %>

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

 <html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>dotptogramming</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:FileUpload ID="fileUpload1" runat="server" Width="280px" />
                                
<asp:RequiredFieldValidator ID="R1" runat="server" 
            ErrorMessage="Select File From File Upload" Text="*"  ValidationGroup="v2" 
            ControlToValidate="fileUpload1" ForeColor="Red"></asp:RequiredFieldValidator>

 <asp:RegularExpressionValidator ID="RE1" runat="server" 
            ErrorMessage="Upload .jpg, .jpeg, .gif files only." Text="*"  
            ValidationGroup="v2" ControlToValidate="fileUpload1" 
            ValidationExpression="^.+\.((jpg)|(jpeg)|(gif))$" ForeColor="Red"></asp:RegularExpressionValidator>

     </div>
    <p>

         <asp:Button ID="Button1" runat="server" Text="Button" ValidationGroup="v2"/>
    </p>
    <asp:ValidationSummary ID="ValidationSummary1" runat="server" 
        ValidationGroup="v2" ForeColor="Red" />
    </form>
</body>
</html>

Code Generate the following output

How to validate fileupload control in asp.net also choose selected format

How to validate fileupload control in asp.net also choose selected format

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Popular Post

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
Introduction Today i am talking about printing, and how to print the content or you can say selected content in asp.net. If you have a webpage and you want to print this then you have to choose command key (ctrl+p) for that. Also you want to print the selected part then you have to select the text first then you have to use command key. But sometimes your selected page could not printed. So many websites provide the printing facilities on the webpage. Today i am talking about the same topics here. Lets take a simple example to demonstrate the topic. Source code: <%@ Page Language="C#" AutoEventWireup="true" CodeFile="printpage.aspx.cs" Inherits="printpage" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head>     <title></title> <script> function printpage() { var getpanel = document.getElementById("<%= Panel1.ClientID%>"); var MainWin
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