首先添加引用: using System.IO; 然后在Page_Load中编写代码: string FilePath = "c:\\test"; if(!Directory.Exists(FilePath)) { Directory.CreateDirectory(FilePath); } if(!Directory.Exists(FilePath + "\\Abnormal")) { Directory.CreateDirectory(FilePath + "\\Abnormal"); } DirectoryInfo UnPostil = new DirectoryInfo(FilePath + "\\Abnormal"); FileInfo[] ArrUnPostil = UnPostil.GetFiles(); LB_Postil.Items.Clear(); foreach (FileInfo FileName in ArrUnPostil) { if(FileName.Length > 0) { LB_Postil.Items.Add(FileName.Name); } } 代码中的LB_Postil是一个LISTBOX服务器控件。 
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