[英]Download File in C# and set permission to Everyone but I see Access Denied
我使用ExcelLibrary,保存了一個excel文件后,我想通過WebClient下載它,我為“文件夾”設置了“完全控制”,但看到“訪問被拒絕”。
我的代碼是:
public class GenerateExcelClass
{
System.Data.DataTable dtCustmer = new System.Data.DataTable();
object[] query;
public void CreateExcelClass<T>(T[] listObj, string fileName, string sheetName = "sheet")
{
string generatefileName = fileName + HttpContext.Current.Request.Cookies["ImenBourse"]["userId"];
dtCustmer = ConvertToDatatable(listObj);
DataSet ds = new DataSet("New_DataSet");
ds.Locale = System.Threading.Thread.CurrentThread.CurrentCulture;
ds.Tables.Add(dtCustmer);
string newFilePath = HttpContext.Current.Server.MapPath(generatefileName + ".xls");
ExcelLibrary.DataSetHelper.CreateWorkbook(newFilePath, ds);
WebClient webClient = new WebClient();
var path = HttpContext.Current.Server.MapPath("");
webClient.DownloadFile(path, generatefileName + ".xls");
}
public static DataTable ConvertToDatatable<T>(T[] list)
{
PropertyInfo[] properties = list.GetType().GetElementType().GetProperties();
DataTable dt = CreateDataTable(properties);
if (list.Length != 0)
{
foreach (object o in list)
FillData(properties, dt, o);
}
return dt;
}
private static DataTable CreateDataTable(PropertyInfo[] properties)
{
DataTable dt = new DataTable();
DataColumn dc = null;
foreach (PropertyInfo pi in properties)
{
DisplayNameAttribute attr = (DisplayNameAttribute)Attribute.GetCustomAttribute(pi, typeof(DisplayNameAttribute));
dt.Columns.Add(attr.DisplayName, pi.PropertyType);
}
return dt;
}
private static void FillData(PropertyInfo[] properties, DataTable dt, Object o)
{
DataRow dr = dt.NewRow();
foreach (PropertyInfo pi in properties)
{
DisplayNameAttribute attr = (DisplayNameAttribute)Attribute.GetCustomAttribute(pi, typeof(DisplayNameAttribute));
if (dt.Columns.Contains(attr.DisplayName))
{
dr[attr.DisplayName] = pi.GetValue(o, null);
}
}
dt.Rows.Add(dr);
}
}
請嘗試一種新方法...而不是先公開真實文件,然后再公開服務器文件系統,而是將Excel文件以正確的mime類型發送到客戶端瀏覽器。
創建文件后,如果需要,可以將其保存到磁盤上的文件中,也可以使用存儲流並在響應中快速保存
指定正確的Response.ContentType =“ application / vnd.ms-excel”並將其寫入。
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