单击裁剪按钮后显示错误...参数无效且源错误为第113行：catch（Exception Ex）第114行：{第115行：throw（Ex）;第116行：}第117行：...... [英] After clicking on the crop button its showing the error ...Parameter is not valid And the source error is Line 113: catch (Exception Ex) Line 114: { Line 115: throw (Ex); Line 116: } Line 117:...

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本文介绍了单击裁剪按钮后显示错误...参数无效且源错误为第113行：catch（Exception Ex）第114行：{第115行：throw（Ex）;第116行：}第117行：......的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

 <％@     Page    语言  =  C＃    AutoEventWireup   =  true    CodeBehind   =  UCrop.aspx.cs   继承  =  WebCrop.UCrop   ％>  
 
 <  ！DOCTYPE     html  >  
 
 <   html     xmlns   =  http://www.w3.org/1999/xhtml >  
 <   head     runat   =  server >  
 <   title  >  <   / title  >  
 <   link     href   =  css / jquery.Jcrop.css    rel   = 样式表    /  >  
 <   script     src   =  scripts / jquery.Jcrop.pack.js >  < /   script  >  
 <   script     src   =  scripts / jquery.min.js >  < /   script  >  
 <   script     src   =  scripts / jquery.Jcrop.js >  < /   script  >  
 <   script     src   =  scripts / jquery.color.js >  < /   script  >  
 <   script     src   =  scripts / jquery.Jcrop.min.js >  < /   script  >  
 <   link     href   =  css / jquery.Jcrop.min.css    rel   =  styl esheet    /  >  
 <   script  >  
 $（document）.ready（function（）
 {
 
 $（ ＃imgCrop）。Jcrop（{
 onSelect：storeCoords 
}）; 
}）; 
 
 function storeCoords（c）{
 $（  #X）VAL（CX）。 
 $（  #Y）。val（c.y）; 
 $（ ＃W）。val（c.w）; 
 $（ ＃H）。val（c.h）; 
 
}; 
 
 < /   script   >  
 <   / head  >  
 <   body  >  
 <  表单    id   =  form1     runat   =  server >  
 <   div  >  
 < < /跨度>  asp：Panel     ID   =  pnlUpload    runat   =  server  >  
 <   asp：FileUpload     ID   = 上传     runat   = < span class =code-keyword> server    /  >  
 <   br     /  >  
 <   asp：按钮    ID   =  btnUpload    runat   =  server    OnClick   =  btnUpload_Click   文字  = 上传    /  >  
  <   asp：标签    ID   =  lblError    runat   =  server   可见  =  false    /  >  
 <   / asp：Panel  > ;  
 <   asp：Panel     ID   =  pnlCrop    runat   =   server   可见 < span class =code-keyword> =  false >  
 <   asp：Image     ID   =  imgCrop    runat   = 服务器   高度  =  258px    Wi dth   =  285px    /  >  
 <   asp：按钮    ID   =  Button1    runat   =  server   文字  = 裁剪    OnClick   =  btnCrop_Click    /  >  
 <   asp：HiddenField     ID   =  X    runat   =  server   值  =  0  /  < span class =code-keyword>>  
 <   asp：HiddenField     ID   =  Y    runat   =  server    Value   =  0  /  >  
 <   asp：HiddenField     ID   =   W    runat  < span class =code-keyword> =  server   值  =  0  /  >  
 <   asp：HiddenField     ID   =   H    runat   =  server   值  =  0  /  >  
 <   / asp：Panel  >  
 <   asp：Panel     ID   =  pnlCropped    runat   =  server   可见  =  false >  
 <   asp：Image     ID   = < span class =code-keyword> imgCropped    runat   =  server    /  >  
 <   / asp：面板 >  
 <   / div  >  
 <   / form  >  
 <   / body  >  
 <   / html  >



代码隐藏文件

 使用系统; 
 使用 System.Collections.Generic; 
 使用 System.Linq; 
 使用 System.Web; 
 使用 System.Web.UI; 
 使用 System.Web.UI.WebControls; 
 使用 System.IO; 
 使用 SD = System.Drawing; 
 使用 System.Drawing.Imaging; 
 使用 System.Drawing.Drawing2D; 
 
 命名空间 WebCrop 
 {
  public   partial   class  UCrop：System.Web.UI.Page 
 {
 字符串 path = HttpContext.Current.Request.PhysicalApplicationPath +   images \\\ \\; 
 
 受保护  void  Page_Load（对象发​​件人，EventArgs e）
 {
 
} 
 
 受保护  void  btnUpload_Click（ object  sender，EventArgs e）
 {
 布尔值 FileOK =  false ; 
 布尔 FileSaved =  false ; 
  if （Upload.HasFile）
 {
 Session [  WorkingImage] = Upload.FileName; 
 字符串 FileExtension = Path.GetExtension（会话[  WorkingImage]的ToString（））ToLower将（）; 
 字符串 [] allowedExtensions = { 。 png，  .jpeg，  。jpg， 。gif }; 
  for （ int  i =  0 ; i <  allowedExtensions.Length; i ++）
 {
  if  （FileExtension == allowedExtensions [i]）
 {
 FileOK =  true ; 
} 
} 
} 
 
 如果（FileOK）
 {
 尝试 
 {
 Upload.PostedFile.SaveAs（路径+会话[ < span class =code-string> WorkingImage]）; 
 FileSaved =  true ; 
} 
  catch （例外情况）
 {
 lblError.Text =  无法上传文件。 + ex.Message.ToString（）; 
 lblError.Visible =  true ; 
 FileSaved =  false ; 
} 
} 
  else  
 {
 lblError.Text =  无法接受此类型的文件。; 
 lblError.Visible =  true ; 
} 
 
  if （FileSaved）
 {
 pnlUpload.Visible = 假; 
 pnlCrop.Visible =  true ; 
 imgCrop.ImageUrl =   images / + Session [  WorkingImage]。ToString（）; 
} 
} 
 受保护  void  btnCrop_Click（ object  sender，EventArgs e）
 {
  string  ImageName = Session [  WorkingImage]。ToString（）; 
  int  h1 = Convert.ToInt32（X.Value）; 
  int  h2 = Convert.ToInt32（Y.Value）; 
  int  h3 = Convert.ToInt32（W.Value）; 
  int  h4 = Convert.ToInt32（H.Value）; 
 
  byte  [] CropImage = Crop（路径+ ImageName，h1，h2，h3，h4）; 
 使用（MemoryStream ms =  new  MemoryStream（CropImage， 0 ，CropImage.Length））
 {
 ms.Write（CropImage， 0 ，CropImage.Length）; 
 使用（SD.Image CroppedImage = SD.Image.FromStream（ms， true ）） 
 {
  string  SaveTo = path +   crop + ImageName; 
 CroppedImage.Save（SaveTo，CroppedImage.RawFormat）; 
 pnlCrop.Visible =  false ; 
 pnlCropped.Visible =  true ; 
 imgCropped.ImageUrl =   crop + ImageName; 
} 
} 
} 
 
 静态  byte  []裁剪（字符串 Img， int  X1， int  Y1， int  X2， int  Y2）
 {
 尝试 
 {
 使用（SD.Image OriginalImage = SD.Image。 FromFile（Img））
 {
 使用（SD.Bitmap bmp =  new  SD.Bitmap（X2，Y2））
 {
 bmp.SetResolution（OriginalImage.Horizo​​ntalResolution，OriginalImage.VerticalResolution）; 
 使用（SD.Graphics Graphic = SD.Graphics.FromImage（bmp））
 {
 Graphic.SmoothingMode = SmoothingMode.AntiAlias ; 
 Graphic.InterpolationMode = InterpolationMode.HighQualityBicubic; 
 Graphic.PixelOffsetMode = PixelOffsetMode.HighQuality; 
 Graphic.DrawImage（OriginalImage， new  SD.Rectangle（ 0 ， 0 ，X2，Y2），X1，Y1，X2，Y2，SD.GraphicsUnit.Pixel）; 
 MemoryStream ms =  new  MemoryStream（）; 
 bmp.Save（ms，OriginalImage.RawFormat）; 
  return  ms.GetBuffer（）; 
} 
} 
} 
} 
  catch （Ex Ex）
 {
  throw （Ex）; 
} 
} 
} 
}

解决方案

（document）.ready（ function（）
{


（ ＃imgCrop）。Jcrop（{
onSelect：storeCoords
}）;
}）;

function storeCoords（c）{


（ #X）VAL（CX）; 

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="UCrop.aspx.cs" Inherits="WebCrop.UCrop" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
     <title></title>
    <link href="css/jquery.Jcrop.css" rel="stylesheet" />
    <script src="scripts/jquery.Jcrop.pack.js"></script>
    <script src="scripts/jquery.min.js"></script>
    <script src="scripts/jquery.Jcrop.js"></script>
    <script src="scripts/jquery.color.js"></script>
    <script src="scripts/jquery.Jcrop.min.js"></script>
    <link href="css/jquery.Jcrop.min.css" rel="stylesheet" />
    <script>
        $(document).ready(function()
        {

            $("#imgCrop").Jcrop({
                onSelect: storeCoords
            });
        });

        function storeCoords(c) {
            $("#X").val(c.x);
            $("#Y").val(c.y);
            $("#W").val(c.w);
            $("#H").val(c.h);

        };

</script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
     <asp:Panel ID="pnlUpload" runat="server">
      <asp:FileUpload ID="Upload" runat="server" />
      <br />
      <asp:Button ID="btnUpload" runat="server" OnClick="btnUpload_Click" Text="Upload" />
      <asp:Label ID="lblError" runat="server" Visible="false" />
    </asp:Panel>
    <asp:Panel ID="pnlCrop" runat="server" Visible="false">
      <asp:Image ID="imgCrop" runat="server" Height="258px" Width="285px" />
         <asp:Button ID="Button1" runat="server" Text="Crop" OnClick="btnCrop_Click" />
      <asp:HiddenField ID="X" runat="server" Value="0"/>
      <asp:HiddenField ID="Y" runat="server" Value="0"/>
      <asp:HiddenField ID="W" runat="server" Value="0"/>
      <asp:HiddenField ID="H" runat="server" Value="0"/>
    </asp:Panel>
    <asp:Panel ID="pnlCropped" runat="server" Visible="false">
      <asp:Image ID="imgCropped" runat="server" />
    </asp:Panel>
    </div>
    </form>
</body>
</html>


Codebehind File

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using SD = System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;

namespace WebCrop
{
    public partial class UCrop : System.Web.UI.Page
    {
        String path = HttpContext.Current.Request.PhysicalApplicationPath + "images\\";

        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void btnUpload_Click(object sender, EventArgs e)
        {
             Boolean FileOK = false;
             Boolean FileSaved = false;
  if (Upload.HasFile)
  {
    Session["WorkingImage"] = Upload.FileName;
    String FileExtension = Path.GetExtension(Session["WorkingImage"].ToString()).ToLower();
    String[] allowedExtensions = { ".png", ".jpeg", ".jpg", ".gif" };
    for (int i = 0; i < allowedExtensions.Length; i++)
    {
      if (FileExtension == allowedExtensions[i])
      {
        FileOK = true;
      }
    }
  }

  if (FileOK)
  {
    try
    {
      Upload.PostedFile.SaveAs(path + Session["WorkingImage"]);
      FileSaved = true;
    }
    catch (Exception ex)
    {
      lblError.Text = "File could not be uploaded." + ex.Message.ToString();
      lblError.Visible = true;
      FileSaved = false;
    }
  }
       else
      {
    lblError.Text = "Cannot accept files of this type.";
    lblError.Visible = true;
       }

       if (FileSaved)
       {
    pnlUpload.Visible = false;
    pnlCrop.Visible = true;
    imgCrop.ImageUrl = "images/" + Session["WorkingImage"].ToString();
      }
}
protected void btnCrop_Click(object sender, EventArgs e)
        {
            string ImageName = Session["WorkingImage"].ToString();
            int h1 = Convert.ToInt32(X.Value);
            int h2 = Convert.ToInt32(Y.Value);
            int h3 = Convert.ToInt32(W.Value);
            int h4 = Convert.ToInt32(H.Value);

                byte[] CropImage = Crop(path + ImageName, h1, h2, h3, h4);
                using (MemoryStream ms = new MemoryStream(CropImage, 0, CropImage.Length))
                {
                    ms.Write(CropImage, 0, CropImage.Length);
                    using (SD.Image CroppedImage = SD.Image.FromStream(ms, true))
                    {
                        string SaveTo = path + "crop" + ImageName;
                        CroppedImage.Save(SaveTo, CroppedImage.RawFormat);
                        pnlCrop.Visible = false;
                        pnlCropped.Visible = true;
                        imgCropped.ImageUrl = "crop" + ImageName;
                    }
                }
            }

        static byte[] Crop(string Img, int X1, int Y1,int X2, int Y2 )
        {
            try
            {
                using (SD.Image OriginalImage = SD.Image.FromFile(Img))
                {
                    using (SD.Bitmap bmp = new SD.Bitmap(X2, Y2))
                    {
                        bmp.SetResolution(OriginalImage.HorizontalResolution, OriginalImage.VerticalResolution);
                        using (SD.Graphics Graphic = SD.Graphics.FromImage(bmp))
                        {
                            Graphic.SmoothingMode = SmoothingMode.AntiAlias;
                            Graphic.InterpolationMode = InterpolationMode.HighQualityBicubic;
                            Graphic.PixelOffsetMode = PixelOffsetMode.HighQuality;
                            Graphic.DrawImage(OriginalImage, new SD.Rectangle(0, 0, X2, Y2), X1, Y1, X2, Y2, SD.GraphicsUnit.Pixel);
                            MemoryStream ms = new MemoryStream();
                            bmp.Save(ms, OriginalImage.RawFormat);
                            return ms.GetBuffer();
                        }
                    }
                }
            }
            catch (Exception Ex)
            {
                throw (Ex);
            }
        }
        }
    }

解决方案

(document).ready(function() {


("#imgCrop").Jcrop({ onSelect: storeCoords }); }); function storeCoords(c) {


("#X").val(c.x);


这篇关于单击裁剪按钮后显示错误...参数无效且源错误为第113行：catch（Exception Ex）第114行：{第115行：throw（Ex）;第116行：}第117行：......的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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