C# 网站中的FileIOPermission

这是我的代码..我在服务器上运行得到这个错误

System.Security.SecurityException:请求类型的权限 'System.Security.Permissions.FileIOPermission，mscorlib， 版本=2.0.0.0，区域性=中性，PublicKeyToken=b77a5c561934e089' 失败

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请解决此错误……

检查IIS应用程序池的windows标识

检查应用程序正在访问的文件夹和文件的安全设置

检查web应用程序是否正在使用模拟

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根据需要调整权限。

检查主机面板并更改IIS用户对上载图像文件夹的权限

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快乐编码：）

很简单：您没有访问其中一个文件和/或目录的权限。我们不能解决这个问题-你必须自己解决！通过你的代码调试-这个错误到底发生在哪里，哪一行？我也会重构代码，有很多重复的代码

if (!Directory.Exists(Request.PhysicalApplicationPath + "Images//Products//" + ddlCategory.SelectedValue.ToString().Trim() + "//" + ProductMasterId.ToString().Trim() + "//OriginalImages"))
{
    Directory.CreateDirectory(Request.PhysicalApplicationPath + "Images//Products//" + ddlCategory.SelectedValue.ToString().Trim() + "//" + ProductMasterId.ToString().Trim() + "//OriginalImages");
}
if (File.Exists(Request.PhysicalApplicationPath + "Images//Products//" + ddlCategory.SelectedValue.ToString().Trim() + "//" + ProductMasterId.ToString().Trim() + "//" + fuImageName.FileName.ToString()))
{
    File.Delete(Request.PhysicalApplicationPath + "Images//Products//" + ddlCategory.SelectedValue.ToString().Trim() + "//" + ProductMasterId.ToString().Trim() + "//" + fuImageName.FileName.ToString());
}
if (File.Exists(Request.PhysicalApplicationPath + "Images//Products//" + ddlCategory.SelectedValue.ToString().Trim() + "//" + ProductMasterId.ToString().Trim() + "//OriginalImages//" + fuImageName.FileName.ToString()))
{
    File.Delete(Request.PhysicalApplicationPath + "Images//Products//" + ddlCategory.SelectedValue.ToString().Trim() + "//" + ProductMasterId.ToString().Trim() + "//OriginalImages//" + fuImageName.FileName.ToString());
}
fuImageName.SaveAs(Request.PhysicalApplicationPath + "Images//Products//" + ddlCategory.SelectedValue.ToString().Trim() + "//" + ProductMasterId.ToString().Trim() + "//" + fuImageName.FileName.ToString());

if (!Directory.Exists(Request.PhysicalApplicationPath + "Images//Products//" + ddlCategory.SelectedValue.ToString().Trim() + "//" + ProductMasterId.ToString().Trim() + "//ThumbNailImages"))
{
    Directory.CreateDirectory(Request.PhysicalApplicationPath + "Images//Products//" + ddlCategory.SelectedValue.ToString().Trim() + "//" + ProductMasterId.ToString().Trim() + "//ThumbNailImages");
}

string Path = Request.PhysicalApplicationPath + "Images//Products//" + ddlCategory.SelectedValue.ToString().Trim() + "//" + ProductMasterId.ToString().Trim() + "//" + fuImageName.FileName.ToString();
Bitmap bmp1 = CreateThumbnail(Path, 400, 500);

string OutputFilename1 = fuImageName.FileName.ToString();
bmp1.Save(Request.PhysicalApplicationPath + "Images//Products//" + ddlCategory.SelectedValue.ToString().Trim() + "//" + ProductMasterId.ToString().Trim() + "//OriginalImages//" + OutputFilename1.ToString(), System.Drawing.Imaging.ImageFormat.Jpeg);

bmp1.Dispose();

Bitmap bmp = CreateThumbnail(Path, 100, 100);

string OutputFilename = "Thumb_" + fuImageName.FileName.ToString();
bmp.Save(Request.PhysicalApplicationPath + "Images//Products//" + ddlCategory.SelectedValue.ToString().Trim() + "//" + ProductMasterId.ToString().Trim() + "//ThumbNailImages//" + OutputFilename.ToString(), System.Drawing.Imaging.ImageFormat.Jpeg);

bmp.Dispose();

ClearAll();