原創(chuàng)|使用教程|編輯:龔雪|2016-03-21 15:05:14.000|閱讀 548 次
概述:本次教程將向您介紹如何在ASP.NET Web應(yīng)用程序中輕松使用Barcode Professional SDK for .NET。
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相關(guān)鏈接:
<html xmlns="//www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Barcode Professional SDK in ASP.NET</title>
    <style type="text/css">
        .newStyle1 {
            font-family: arial, Helvetica, sans-serif;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
        <div class="newStyle1">
            <h3>Barcode Professional SDK in ASP.NET</h3>
            <br />
            Enter Value to Encode:
            <br />
            <asp:TextBox ID="TextBox1" runat="server" Width="264px">
            </asp:TextBox><asp:Button ID="Button1" runat="server" Text="Barcode Now!" 
                onclick="Button1_Click" />
            <br />
            <br />
            <asp:Image ID="Image1" runat="server" Visible="false" />
        </div>    
    </form>
</body>
</html>      
If (Me.TextBox1.Text.Length > 0) Then
    Me.Image1.ImageUrl = "~/BarcodeGen.ashx?code=" + Me.TextBox1.Text
    Me.Image1.Visible = True
End If	    	
if (this.TextBox1.Text.Length >  0)
{
    this.Image1.ImageUrl = "~/BarcodeGen.ashx?code=" + this.TextBox1.Text;
    this.Image1.Visible = true;
}			    
<%@ WebHandler Language="VB" Class="BarcodeGen" %>
Imports System
Imports System.Web
Imports Neodynamic.SDK
Public Class BarcodeGen : Implements IHttpHandler
    
    Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
        
        'Get value to encode from querystring
        Dim valueToEncode As String = context.Request("code")
                
        'Create BarcodeProfessional object        
        Dim bc As New BarcodeProfessional()
        'Set barcode standard
        bc.Symbology = Symbology.Code128
        'Set value to encode
        bc.Code = valueToEncode
        'Generate barcode        
        context.Response.ContentType = "image/gif"
        context.Response.BinaryWrite(bc.GetBarcodeImage(System.Drawing.Imaging.ImageFormat.Gif))
    End Sub
 
    Public ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable
        Get
            Return False
        End Get
    End Property
End Class    	
<%@ WebHandler Language="C#" Class="BarcodeGen" %>
using System;
using System.Web;
using Neodynamic.SDK;
public class BarcodeGen : IHttpHandler {
    
    public void ProcessRequest (HttpContext context) {
        //Get value to encode from querystring
        string valueToEncode = context.Request["code"];
        
        //Create BarcodeProfessional object        
        BarcodeProfessional bc = new BarcodeProfessional();
        //Set barcode standard
        bc.Symbology = Symbology.Code128;
        //Set value to encode
        bc.Code = valueToEncode;
        //Generate barcode        
        context.Response.ContentType = "image/gif";
        context.Response.BinaryWrite(bc.GetBarcodeImage(System.Drawing.Imaging.ImageFormat.Gif));
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }
}			    


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