upc nejde internet Try This in .NET framework

Printer UPCA in .NET framework Try This

Try This
UCC - 12 Generation In Visual Studio .NET
Using Barcode printer for ASP.NET Control to generate, create UPC-A image in ASP.NET applications.
Barcode Creator In .NET Framework
Using Barcode encoder for ASP.NET Control to generate, create barcode image in ASP.NET applications.
Customizing Validation
GTIN - 12 Generator In Visual C#
Using Barcode printer for .NET framework Control to generate, create UPC Symbol image in .NET applications.
UPCA Maker In .NET Framework
Using Barcode encoder for .NET Control to generate, create UPC-A image in .NET framework applications.
The ASPNET side of the application includes a single TextBox control, a CustomValidator control, a button and two labels used for directions, and validation feedback The following steps show how to develop the application:
Creating UPC-A Supplement 2 In Visual Basic .NET
Using Barcode generator for .NET Control to generate, create UPC-A Supplement 5 image in .NET applications.
Drawing UPC Symbol In Visual Studio .NET
Using Barcode generation for ASP.NET Control to generate, create UCC - 12 image in ASP.NET applications.
1 Open a new Web Site in Visual Basic 2008, and set the view to Split mode 2 Drag a TextBox control to the page in the Design window 3 Place a CustomValidator control beneath the TextBox In the Source mode add an
Generating Bar Code In .NET
Using Barcode generation for ASP.NET Control to generate, create barcode image in ASP.NET applications.
Bar Code Drawer In Visual Studio .NET
Using Barcode drawer for ASP.NET Control to generate, create barcode image in ASP.NET applications.
OnServerValidate property, and assign it the value CityCheck
Make European Article Number 13 In VS .NET
Using Barcode creation for ASP.NET Control to generate, create GS1 - 13 image in ASP.NET applications.
Encoding Matrix 2D Barcode In VS .NET
Using Barcode maker for ASP.NET Control to generate, create 2D Barcode image in ASP.NET applications.
4 Add a button beneath the validator Change the text to Find City , and double-click the
1D Maker In .NET Framework
Using Barcode creator for ASP.NET Control to generate, create Linear Barcode image in ASP.NET applications.
Printing USPS PLANET Barcode In VS .NET
Using Barcode creator for ASP.NET Control to generate, create USPS Confirm Service Barcode image in ASP.NET applications.
button to generate an event handler for the OnClick property Change the OnClick value to DoValidation
Encode Code 128 Code Set B In None
Using Barcode encoder for Office Word Control to generate, create Code 128C image in Microsoft Word applications.
Code 3/9 Recognizer In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
5 Place two Label controls beneath the button Use Figures 9-11 and 9-12 as guides
Read UPC A In Visual Studio .NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Bar Code Decoder In VS .NET
Using Barcode Control SDK for ASP.NET Control to generate, create, read, scan barcode image in ASP.NET applications.
Remove the Text property from both labels in the Source window of the Split mode
Code 39 Recognizer In Visual Basic .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in .NET applications.
Decoding EAN / UCC - 13 In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
6 Select the CustomValidator control and in the Properties window, change the error
EAN13 Printer In None
Using Barcode drawer for Office Word Control to generate, create GS1 - 13 image in Word applications.
Universal Product Code Version A Generation In VS .NET
Using Barcode generator for Visual Studio .NET Control to generate, create UPC-A image in VS .NET applications.
message to City not recognized Try again Set ControlToValidate to TextBox1 The following listing shows all of the source code settings for the ASPNET portion of the application:
(continued)
ASPNET 35: A Beginner s Guide
Figure 9-11 Error messages
ASPNET CustomValaspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="CustomVal aspxcs" Inherits="CusVal" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 10 Transitional//EN" "http://wwww3org/TR/xhtml1/DTD/xhtml1-transitionaldtd"> <html xmlns="http://wwww3org/1999/xhtml"> <head runat="server">
Figure 9-12 Two responses for valid entries
9:
Validation Controls
<style type="text/css"> val { font-family: Arial, Helvetica, sans-serif; font-size: small; font-variant: small-caps; color: #aa0000; } div { font-family: Arial, Helvetica, sans-serif; font-size: 11pt; } </style> <title>Custom Validation</title> </head> <body> <form id="form1" runat="server"> <div> <asp:TextBox ID="TextBox1" runat="server" /> <br /> <asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="City not recognized Try again" OnServerValidate="CityCheck" ControlToValidate="TextBox1" /> <br /> <asp:Button ID="Button1" runat="server" Text="Find City" OnClick="DoValidation" /><p /> <asp:Label ID="Label1" runat="server" /> <p /> <asp:Label ID="Label2" runat="server" CssClass="val" /> </div> </form> </body> </html>
7 Select the C# tab and remove the Page_Load function Change the button-click
default function name to DoValidation Add the following code (Make sure to include using SystemWebUIWebControls)
C# CustomValaspxcs
using System; using SystemWebUIWebControls; public partial class CusVal : SystemWebUIPage
(continued)
ASPNET 35: A Beginner s Guide
{ protected void CityCheck(object sender, ServerValidateEventArgs e) { switch(TextBox1Text) { case "Fargo": Label1Text="Go to North Dakota and turn left"; break; case "Iowa City": Label1Text="Go to Iowa and look for big university"; break; case "Providence": Label1Text="Just go to Rhode Island You can't miss it"; break; default: eIsValid = false; break; } } public void DoValidation(object sender, EventArgs e) { if (PageIsValid) { Label2Text = "Your request is valid"; } else { Label2Text = "Try Fargo, Iowa City or Providence"; } } }
Despite the fact that the DoValidation method is triggered by pressing the button, it is processed after the CityCheck method All validation functions are processed before the button functions To see how the custom validation works, enter any city other than Fargo, Iowa City, or Providence Figure 9-11 shows that in addition to an error message generated by the CustomValidator control, the function also recognizes a validation error and sends a helpful message for a second attempt When you enter a city recognized by the C# code, it results in the default validity method value of true When the DoValidation method fires, the results are tested using the PageIsValid method Because the eIsValid value has not been set to false, it resolves as true, and so does the PageIsValid conditional test Figure 9-12
9:
Validation Controls
shows that the CustomValidator does not throw an error, but the validation method (IsValid) can be used to generate C# messages With the CustomValidator control, the scope of validation events is limitless Even with validators such as the RegularExpressionValidator that can have any number of different regular expressions used in the validation process, you still need a validator option where you can validate anything you want Chances are, though, that most of the validation work you do will be with one of the simpler validation controls However, the CustomValidator control is there when you need it
Summarizing Validation Errors
As you have seen in the discussion of validation, wherever you have an error message, the space taken up by the message leaves a gap With several different controls using some kind of validation control, a page could get cluttered and messy very quickly An easy way to prevent this state of affairs is to use the ValidationSummary control With this control all of the error messages for the page are stored in one place The kind of message and validation control can be any you want However, instead of the error message displayed in the location where you placed the validation control, all of the errors are displayed together Usually, the summary errors are placed at the end of the form To see how this works, an application using two TextBox controls with a RequiredFieldValidator control and a RegularExpressionValidator control are set up as they have been in previous examples with one important difference their Display property is set to None When the display setting is None, the validation controls still show up in the Design mode as taking up space as shown in Figure 9-13 However, as you can see in Figures 9-14 and 9-15, no space at all is taken up by the area reserved for error messages Instead, all of the messages appear at the bottom where the ValidationSummary control is positioned The example is easy to try Just put in the controls and labels as shown in Figure 9-13 Where you see the bullet list of error messages is in the ValidationSummary control Add the error messages to the two controls and controls to validate, and set the RegularExpre ssionValidator control s ValidationExpression to email Remember to also set the display of both validators to None When you place the ValidationSummary
Copyright © OnBarcode.com . All rights reserved.