在ASPNET中上传图片并生成缩略图的C

2019-06-20 05:59:24 来源: 宁波信息港

  ¼²ú³¼C# FONT size=4FONT size=4FONT size=4using Systemusing llectionsusing ponentModelusing tausing awingusing busing ssionStateusing using bControlsusing mlControlsusing using aging

  namespace am { /// summary /// Thumbnail ÷

  /// /summary public class Thumbnail ge { protected bel Label1protected tton Button1

  private void Page_Load¨object sender entArgs e

  { // ·§ú³¼³xt = "ált/h3"xt = "²¾¼"

  }

  #region Web °è¼÷ú³úoverride protected void OnInit¨EventArgs e

  { // // CODEGEN ÷ Web °è¼÷ù±è

  // InitializeComponent¨Init¨e}

  /// summary /// è¼÷§³ùè·½·¨ - ²¹ú±à¼÷/// ·½·¨

  /// /summary private void InitializeComponent¨

  { ick += new entHandler¨tton1_ad += new entHandler¨ge_Load

  } #endregion

  private void Button1_Click¨object sender entArgs e

  { HttpFileCollection MyFileColl = lesHttpPostedFile MyPostedFile = MyFileColl[0]

  if ¨String¨ToLower¨IndexOf¨"image" 0

  { ite¨"§¼½"return} GetThumbNail¨leName 100 String¨ false putStream} private ageFormat GetImageType¨object strContentType

  { if ¨¨String¨ToLower¨ == "image/pjpeg"

  { return eg} else if ¨¨String¨ToLower¨ == "image/gif"

  { return f} else if ¨¨String¨ToLower¨ == "image/bmp"

  { return p} else if ¨¨String¨ToLower¨ == "image/tiff"

  { return ff} else if ¨¨String¨ToLower¨ == "image/x-icon"

  { return on} else if ¨¨String¨ToLower¨ == "image/x-png"

  { return g} else if ¨¨String¨ToLower¨ == "image/x-emf"

  { return f} else if ¨¨String¨ToLower¨ == "image/x-exif"

  { return if} else if ¨¨String¨ToLower¨ == "image/x-wmf"

  { return f} else { return moryBmp}

  private void GetThumbNail¨string strFileName int iWidth int iheightstring strContentType bool blnGetFromFile ream ImgStream

  { age oImg

  if ¨blnGetFromFile

  { oImg = omFile¨strFileName} else { oImg = omStream¨ImgStream} oImg = tThumbnailImage¨iWidth iheight null rostring strGuid = wGuid¨ToString¨ToUpper¨string strFileExt = bstring¨stIndexOf¨"."ntentType = strContentTypeMemoryStream MemStream = new MemoryStream¨ve¨MemStream GetImageType¨iteTo¨tputStream}

  } /FONT/FONT/FONTFONT color=#ff0000 size=4/FONTFONT size=4¹1.°¼¼¨JPG GIF PNG2.±½¨·¾¨nfigè·¾¼½±3.²×ú³¨í¨nfigèí

  4.¨½¨nfig¨¼½

  5.¼±à¼¨ù¾í¼í¼ù¼

  6.·¾¼7.¹²²ò³íó8.¹"²¼"checkboxò²¼

  9.ù¾ówebformè1file inputàcheckbox 10.²¼ê±ó¾¼¼³×½11.¼¼³

  12.¼¼½¼+"_thumb."+¨½g_f±¹í

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