在ASP.NET里轻松实现缩略图

在ASP.NET里轻松实现缩略图

http://lucky_elove.www1.dotnetplayground.com/

以前，在页面上实现缩略图必须借助第三方组件。现在，有了.NET，就可以很轻松地实现缩略图。下面就是实现缩略图的例子。

查看例子

代码如下：Thumbnail.aspx

在ASP.NET里轻松实现缩略图

后代码：Thumbnail.aspx.vb

Imports SystemImports System.WebImports System.DrawingImports System.IOImports System.Drawing.ImagingPublic Class Thumbnail Inherits System.Web.UI.Page Protected WithEvents Label1 As System.Web.UI.WebControls.Label Protected WithEvents Button1 As System.Web.UI.WebControls.Button#Region " Web Form Designer Generated Code " 'This call is required by the Web Form Designer. Private Sub InitializeComponent() End Sub Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init 'CODEGEN: This method call is required by the Web Form Designer 'Do not modify it using the code editor. InitializeComponent() End Sub#End Region Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Label1.Text = "在ASP.NET里轻松实现缩略图" Button1.Text = "上载并显示缩略图" End Sub Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click Dim MyFileColl As HttpFileCollection = HttpContext.Current.Request.Files Dim MyPostedFile As HttpPostedFile = MyFileColl.Item(0) If LCase(MyPostedFile.ContentType.ToString()).IndexOf("image")