asp.net 将字符串生成图片 - .NET技术 / ASP.NET

我想将字符串生成一张图片，如何写？

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字符串生成图片?

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引用

字符串生成图片?

说简单点就是生成验证码的方法。

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Private Sub Paint(ByVal strCode As String)
  Dim strImgPath As String = Server.MapPath("myCodeImg.jpg")
  Dim strTempPath As String = strImgPath
  System.IO.File.Delete(strImgPath)

  Const intWidth As Int16 = 400
  Const intHeight As Int16 = 150

  Dim myBimap As System.Drawing.Image = New System.Drawing.Bitmap(intWidth, intHeight)

  Dim myG As System.Drawing.Graphics = System.Drawing.Graphics.fromImage(myBimap)

  Dim myFont As System.Drawing.Font = New System.Drawing.Font("幼圆", 16, FontStyle.Bold)

  Dim myRect As System.Drawing.RectangleF = New System.Drawing.RectangleF(2, 2, intWidth, intHeight)

  Dim myBrush As System.Drawing.SolidBrush = New System.Drawing.SolidBrush(Color.White)

  myG.Clear(Color.Blue)

  myG.DrawString(strCode, myFont, myBrush, myRect)

  myBimap.Save(strTempPath, System.Drawing.Imaging.ImageFormat.Jpeg)
  Image1.ImageUrl = strTempPath
  myG.Dispose()
  myBimap.Dispose()
  End Sub