01.<%@ Page Language="VB" %>
02.<%@ Import Namespace="System.Drawing" %>
03.<%@ Import Namespace="System.Drawing.Imaging" %>
04.<%@ Import Namespace="System.IO"%>
05.<script runat="server">
06.
07. Sub Page_Load(sender As Object, e As EventArgs)
08. If Not Page.IsPostBack() Then
09. Me.txtFrom.Text = "Gallery/"
10. Me.txtTo.Text = "Resize/"
11. End IF
12. End Sub
13.
14. Sub btnCreate_OnClick(sender As Object, e As EventArgs)
15.
16. Dim myDirInfo As DirectoryInfo
17. Dim arrFileInfo As Array
18. Dim myFileInfo As FileInfo
19. Dim FileName As String
20. Dim NewFileName As String
21.
22. Me.lblText.Text = ""
23.
24. myDirInfo = New DirectoryInfo(Server.MapPath(Me.txtFrom.Text))
25. arrFileInfo = myDirInfo.GetFiles("*.jpg")
26. For Each myFileInfo In arrFileInfo
27. FileName = txtFrom.Text & myFileInfo.Name
28. NewFileName = txtTo.Text & "Thumbnail_"&myFileInfo.Name
29.
30.
31. Call ResizeImages(FileName,NewFileName)
32.
33. Me.lblText.Text = Me.lblText.Text & (FileName & "===> <a href=" & NewFileName & ">" & NewFileName &"</a><br>")
34. Next myFileInfo
35.
36. End Sub
37.
38. Sub ResizeImages(FileName,NewFileName)
39. Dim intWidth,intHeight As Integer
40.
41. intWidth = 100
42. intHeight = 0
43.
44. Dim objGraphic As System.Drawing.Image = System.Drawing.Image.FromFile(Server.MapPath(FileName))
45.
46. Dim objBitmap As Bitmap
47.
48. If intHeight > 0 Then
49. objBitmap = New Bitmap(objGraphic, intWidth, intHeight)
50. Else
51. If objGraphic.Width > intWidth Then
52. Dim ratio As Double = objGraphic.Height / objGraphic.Width
53. intHeight = ratio * intWidth
54. objBitmap = New Bitmap(objGraphic, intWidth, intHeight)
55. Else
56. objBitmap = New Bitmap(objGraphic)
57. End If
58. End If
59.
60.
61. objBitmap.Save(Server.MapPath(NewFileName), objGraphic.RawFormat)
62.
63.
64. objGraphic.Dispose()
65.
66.
67. objBitmap = Nothing
68. objGraphic = Nothing
69.
70. End Sub
71.
72.</script>
73.<html>
74.<head>
75.<title>ThaiCreate.Com ASP.NET - Images (System.Drawing)</title>
76.</head>
77.<body>
78. <form id="form1" runat="server">
79. <asp:Label id="lblForm" runat="server" Text="Path From" Width="58px"></asp:Label>
80. <asp:Textbox id="txtFrom" runat="server"></asp:Textbox><br />
81. <asp:Label id="lblTo" runat="server" Text="Path To" Width="58px"></asp:Label>
82. <asp:Textbox id="txtTo" runat="server"></asp:Textbox>
83. <input id="btnCreate" type="button" OnServerClick="btnCreate_OnClick" value="Create" runat="server" />
84. <hr />
85. <asp:Label id="lblText" runat="server"></asp:Label>
86. </form>
87.</body>
88.</html>
89.</form>
VB.NET || 
ช่วยกันสนับสนุนรักษาเว็บไซต์ความรู้แห่งนี้ไว้ด้วยการสนับสนุน 
