/// <summary>
/// List导出到Excel文件
/// </summary>
/// <param name="sFileName"></param>
/// <param name="sHeaderText"></param>
/// <param name="list"></param>
public string ExportToExcel(string sFileName, string sHeaderText, List <T> list, string[] columns)
{
sFileName = string.Format("{0}_{1}", SecurityHelper.GetGuid(), sFileName);
string sRoot = GlobalContext.HostingEnvironment.ContentRootPath;
string partDirectory = string.Format("Resource{0}Export{0}Excel", Path.DirectorySeparatorChar);
string sDirectory = Path.Combine(sRoot, partDirectory);
string sFilePath = Path.Combine(sDirectory, sFileName);
if (!Directory.Exists(sDirectory))
{
Directory.CreateDirectory(sDirectory);
}
using (MemoryStream ms = CreateExportMemoryStream(list, sHeaderText, columns))
{
using (FileStream fs = new FileStream(sFilePath, FileMode.Create, FileAccess.Write))
{
byte[] data = ms.ToArray();
fs.Write(data, 0, data.Length);
fs.Flush();
}
}
return(partDirectory + Path.DirectorySeparatorChar + sFileName);
}
/// <summary>
/// 上传单个文件
/// </summary>
/// <param name="fileModule"></param>
/// <param name="fileCollection"></param>
/// <returns></returns>
public async static Task <TData <string> > UploadFile(int fileModule, IFormFileCollection files)
{
string dirModule = string.Empty;
TData <string> obj = new TData <string>();
if (files == null || files.Count == 0)
{
obj.Message = "请先选择文件！";
return(obj);
}
if (files.Count > 1)
{
obj.Message = "一次只能上传一个文件！";
return(obj);
}
TData objCheck = null;
IFormFile file = files[0];
switch (fileModule)
{
case (int)UploadFileType.Portrait:
objCheck = CheckFileExtension(Path.GetExtension(file.FileName), ".jpg|.jpeg|.gif|.png");
if (objCheck.Tag != 1)
{
obj.Message = objCheck.Message;
return(obj);
}
dirModule = UploadFileType.Portrait.ToString();
break;
case (int)UploadFileType.News:
if (file.Length > 5 * 1024 * 1024) // 5MB
{
obj.Message = "文件最大限制为 5MB";
return(obj);
}
objCheck = CheckFileExtension(Path.GetExtension(file.FileName), ".jpg|.jpeg|.gif|.png");
if (objCheck.Tag != 1)
{
obj.Message = objCheck.Message;
return(obj);
}
dirModule = UploadFileType.News.ToString();
break;
case (int)UploadFileType.Import:
objCheck = CheckFileExtension(Path.GetExtension(file.FileName), ".xls|.xlsx");
if (objCheck.Tag != 1)
{
obj.Message = objCheck.Message;
return(obj);
}
dirModule = UploadFileType.Import.ToString();
break;
default:
obj.Message = "请指定上传到的模块";
return(obj);
}
string fileExtension = TextHelper.GetCustomValue(Path.GetExtension(file.FileName), ".png");
string newFileName = SecurityHelper.GetGuid() + fileExtension;
string dir = "Resource" + Path.DirectorySeparatorChar + dirModule + Path.DirectorySeparatorChar + DateTime.Now.ToString("yyyy-MM-dd").Replace('-', Path.DirectorySeparatorChar) + Path.DirectorySeparatorChar;
string absoluteDir = Path.Combine(GlobalContext.HostingEnvironment.ContentRootPath, dir);
string absoluteFileName = string.Empty;
if (!Directory.Exists(absoluteDir))
{
Directory.CreateDirectory(absoluteDir);
}
absoluteFileName = absoluteDir + newFileName;
try
{
using (FileStream fs = File.Create(absoluteFileName))
{
await file.CopyToAsync(fs);
fs.Flush();
}
obj.Data = Path.AltDirectorySeparatorChar + ConvertDirectoryToHttp(dir) + newFileName;
obj.Message = Path.GetFileNameWithoutExtension(TextHelper.GetCustomValue(file.FileName, newFileName));
obj.Description = (file.Length / 1024).ToString(); // KB
obj.Tag = 1;
}
catch (Exception ex)
{
obj.Message = ex.Message;
}
return(obj);
}
