1,网上关于读取写入
2,判断文件文件夹和文件是否存在(写入时会自动创建
public string CreateFolder() { string fileName = "my"; string folderPath = "C:\\Configurations"; string filePath = @"C:\\Configurations\" + fileName + "."; if (!Directory.Exists(folderPath)) { Directory.CreateDirectory(folderPath); //给文件夹Everyone赋完全控制权限 DirectorySecurity folderSec = new DirectorySecurity(); folderSec.AddAccessRule(new FileSystemAccessRule("Everyone", FileSystemRights.FullControl, InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit, PropagationFlags.None, AccessControlType.Allow)); System.IO.Directory.SetAccessControl(folderPath, folderSec); CreateFile(filePath); } else { CreateFile(filePath); } return filePath; }
public void CreateFile(string filePath) { if (!File.Exists(filePath)) { using (FileStream fs1 = new FileStream(filePath, FileMode.Create, FileAccess.Write)) { //给 DirectorySecurity fSec = new DirectorySecurity(); fSec.AddAccessRule(new FileSystemAccessRule("Everyone", FileSystemRights.FullControl, InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit, PropagationFlags.None, AccessControlType.Allow)); System.IO.Directory.SetAccessControl(filePath, fSec); } } }
3,文件夹和文件都创建出来以后就是写入了。
(1)
了解了这几个对象,开发起来就比较顺了。
List<Person> list = new List<Person>(); list.Add(new Person() { Name = "张三", Age = 19, Email = "hl@yahoo.com" }); list.Add(new Person() { Name = "李四", Age = 29, Email = "xzl@yahoo.com" }); list.Add(new Person() { Name = "王五", Age = 39, Email = "hhw@yahoo.com" }); list.Add(new Person() { Name = "赵六", Age = 9, Email = "ys@yahoo.com" }); //1.创建一个Dom对象 new //2.编写文档定义 "1.0", "utf-8", null); xDoc.AppendChild(//3.编写一个根节点 "List"); xDoc.AppendChild(//4.循环创建Person节点 for (int i = 0; i < list.Count; i++) { //4.1创建一个Person元素 "Person"); = xDoc.CreateAttribute("id"); = (i + 1).ToString(); //将属性增加到Person节点中 //4.2在这里向Person节点下增加子节点 //创建Name "Name"); = list[i].Name; //创建Age "Age"); = list[i].Age.ToString(); //创建一个Email节点 = xDoc.CreateElement("Email"); = list[i].Email; //最后把Person加到根节点下 //5.将 xDoc.Save(@"C:\Configurations\my");
4,
public DataTable GetDataFromstring fileName = "my"; string filePath = @"C:\\Configurations\" + fileName + "."; DataTable dt = this.BuildDataTable(); try { = new = document.DocumentElement; dt = LoadToTreeByreturn dt; } catch { return dt; } }private DataTable LoadToTreeBytry { foreach (in rootElement.ChildNodes) { if (node.NodeType == = dt.NewRow(); foreach (DataColumn dc in dt.Columns) { dr[dc.ColumnName] = node.Attributes[dc.ColumnName] == null ? "" : node.Attributes[dc.ColumnName].Value; } dt.Rows.Add(dr); //遍历二级节点 foreach (in node.ChildNodes) { if (subNode.NodeType == = dt.NewRow(); foreach (DataColumn dc in dt.Columns) { subDr[dc.ColumnName] = subNode.Attributes[dc.ColumnName] == null ? "" : subNode.Attributes[dc.ColumnName].Value; } dt.Rows.Add(subDr); } } } } return dt; } catch { return dt; } }
原标题:Asp.Net写入读取Xml(处理文件权限)
关键词:ASP.NET