将我的方法和图像调整方法结合起来

Question

嘿，我想在我的文件上传中添加调整图像大小的功能，但是我不知道如何将它与当前代码结合起来：

我的代码

protected void UploadButton_Click(object sender, EventArgs e)
{
if (FileUploadControl.HasFile)
            {
                try
                {
                    string theUserId = Session["UserID"].ToString();
                    OdbcConnection cn = new OdbcConnection("Driver={MySQL ODBC 3.51 Driver}; Server=localhost; Database=gymwebsite2; User=root; Password=commando;");
                    cn.Open();

                    OdbcCommand sc = new OdbcCommand(string.Format("SELECT picturepath FROM Pictures WHERE UserID ='{0}'", theUserId), cn);
                    OdbcDataReader reader = sc.ExecuteReader();
                    while (reader.Read())
                    {
                        if (System.IO.File.Exists(Server.MapPath(Convert.ToString(reader[0]))))
                        {

                            System.IO.File.Delete(Server.MapPath(Convert.ToString(reader[0])));
                        }  

                    }


                    string filenameDB = Path.GetFileName(FileUploadControl.FileName);
                    string fileuploadpath = Server.MapPath("~/userdata/" + theUserId + "/uploadedimage/") + Path.GetFileName(FileUploadControl.FileName);
                    FileUploadControl.SaveAs(fileuploadpath);
                    string fileuploadpaths = ("~/userdata/" + theUserId + "/uploadedimage/") + filenameDB;
                    StatusLabel.Text = "Upload status: File uploaded!";


                    OdbcCommand cmd = new OdbcCommand("UPDATE Pictures SET picturepath ='" + fileuploadpaths + "' WHERE UserId = '" + theUserId + "'", cn);
                    cmd.ExecuteNonQuery();
                }

                catch (Exception ex)
                {
                    StatusLabel.Text = "Upload status: The file could not be uploaded. The following error occured: " + ex.Message;

                }

            }
    }

}

图像调整代码：

    protected void Button1_Click(object sender, EventArgs e)
{
    if (this.IsValid && this.FileUpload1.HasFile)
    { 
        //Create an ImageElement to wrap up the uploaded image
        Neodynamic.WebControls.ImageDraw.ImageElement uploadedImage;
        uploadedImage = Neodynamic.WebControls.ImageDraw.ImageElement.FromBinary(this.FileUpload1.FileBytes);

        //Create Resize imaging action to apply on the uploaded image
        //NOTE: You may apply any of the ImageDraw built-in imaging actions
        Neodynamic.WebControls.ImageDraw.Resize actResize = new Neodynamic.WebControls.ImageDraw.Resize();
        actResize.Width = 150;
        actResize.LockAspectRatio = Neodynamic.WebControls.ImageDraw.LockAspectRatio.WidthBased;

        uploadedImage.Actions.Add(actResize);

        //Composite the output image by using ImageDraw class
        Neodynamic.WebControls.ImageDraw.ImageDraw imgDraw = new Neodynamic.WebControls.ImageDraw.ImageDraw();

        //Add uploaded image
        imgDraw.Elements.Add(uploadedImage);

        //Output image settings...
        //For example: save the image in JPEG format always
        imgDraw.ImageFormat = Neodynamic.WebControls.ImageDraw.ImageDrawFormat.Jpeg;
        imgDraw.JpegCompressionLevel = 90;

        //Now, save the output image on disk
        string fileName = @"C:\Temp\" + System.IO.Path.GetFileNameWithoutExtension(this.FileUpload1.FileName) + ".jpg";
        imgDraw.Save(fileName);

    }
}

现在我只想把它都放在一个按钮下面：

protected void UploadButton_Click(object sender, EventArgs e)

从我的密码里。

Answer 1

调整大小的照片在asp.net可能是痛苦的调整大小与良好的质量。请参阅这里的代码，例如，如何以良好的质量从fileupload调整图像的大小：http://webdeveloperpost.com/Articles/How-To-Resize-Image-In-ASP-NET-With-Good-Quality.aspx