C# winform如何实现数据的保存和读取

在c#winform中我们在写程序时，经常需要进行数据处理，那么数据如何保存和读取（下面我们通过序列化和反序列化的方式来实现）

第一步: 我们建立一个winform窗体

第二步: 构建一个外部实体类（Student类）

第三步：从图上按钮可以发现现在我定义了两个按钮（保存参数和读取参数）保存参数对应代码DataSave()，读取参数对应（DataRead）

DataSava方法代码如下：

DataRead方法如下

最后展示完整代码内容

结果演示：

第一步: 按F5启动应用程序:

第二步：修改控件中的数据并且点击保存参数

第三步:保存成功后点击读取参数，在图片的右边会产生一个与原始窗体一样的窗体

1.首先创建窗体:

2.再新建一个实体类:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace  SlandDs
{//允许本类可以被序列化[Serializable]public class Student{//定义了五个属性分别是姓名，年龄，性别，班级，爱好public string Name { get; set; }public int Age  { get; set; }public string Six { get; set; }public string ClaslRoom { get; set; }public string Hoppy { get; set; }}
}

3.第三步：从图上按钮可以发现现在我定义了两个按钮（保存参数和读取参数）保存参数对应代码DataSave()，读取参数对应（DataRead）

DataSava方法代码如下：

        private bool DataSava(string fileName){try{if (student == null){student = new Student();}//首先把控件的值赋值给对象（也就是序列化）student.Name = txt_name.Text;student.Age = Convert.ToInt16(num_age.Value);student.Six = txt_six.Text;student.ClaslRoom = txt_classroom.Text;student.Hoppy = txt_hobby.Text;//第二步就是要把这些内容保存在一个数据文件中（后缀名为.dat）string FileDir = System.Windows.Forms.Application.StartupPath + "\\studnet\\";if (!Directory.Exists(FileDir)){Directory.CreateDirectory(FileDir);}//将学生数据保存在数据文件中mSerialize.FilePath = fileName;string Ren;mSerialize.SaveObj(student, out Ren);MessageBox.Show("学生数据保存成功", "提示");return true;}catch (System.Exception ex){MessageBox.Show(ex.Message);return false;}}

DataRead方法如下

        private bool DataRead(string fileName){try{if(student==null){student = new Student();}else if (mSerialize == null){mSerialize = new MSerialize(null);}string FileDir = System.Windows.Forms.Application.StartupPath + "\\studnet\\";if (!Directory.Exists(FileDir)){MessageBox.Show("student文件不存在");return false;}mSerialize.FilePath = fileName;string Ren;if (mSerialize.LoadObj(out student,out Ren)==true){txt_name.Text = student.Name;num_age.Value = student.Age;txt_six.Text = student.Six;txt_classroom.Text = student.ClaslRoom;txt_hobby.Text = student.Hoppy;MessageBox.Show("读取学生数据成功","提示");}elseMessageBox.Show("读取学生文件失败","提示");Form1 form = new Form1();form.dataRead(ref student);form.ShowDialog();return true;}catch (System.Exception ex){MessageBox.Show(ex.Message);return false;}}

最后展示完整代码内容

using System;
using System.IO;
using System.Windows.Forms;
using WRO;namespace SlandDs
{public partial class Form1 : Form{static   string FileName = System.Windows.Forms.Application.StartupPath + "\\studnet\\" + "studnet.dat";//必须保证在同一个命名控件下Student student;MSerialize mSerialize;public Form1(){mSerialize = new MSerialize(FileName);InitializeComponent();}public void dataRead(ref Student _student){try{if (_student==null){_student = new Student();}txt_name.Text = _student.Name;num_age.Value = _student.Age;txt_six.Text = _student.Six;txt_classroom.Text = _student.ClaslRoom;txt_hobby.Text = _student.Hoppy;}catch (System.Exception ex){MessageBox.Show(ex.Message);}}//保存private void button_保存_Click(object sender, EventArgs e){DataSava(FileName);}private bool DataSava(string fileName){try{if (student == null){student = new Student();}//首先把控件的值赋值给对象（也就是序列化）student.Name = txt_name.Text;student.Age = Convert.ToInt16(num_age.Value);student.Six = txt_six.Text;student.ClaslRoom = txt_classroom.Text;student.Hoppy = txt_hobby.Text;//第二步就是要把这些内容保存在一个数据文件中（后缀名为.dat）string FileDir = System.Windows.Forms.Application.StartupPath + "\\studnet\\";if (!Directory.Exists(FileDir)){Directory.CreateDirectory(FileDir);}//将学生数据保存在数据文件中mSerialize.FilePath = fileName;string Ren;mSerialize.SaveObj(student, out Ren);MessageBox.Show("学生数据保存成功", "提示");return true;}catch (System.Exception ex){MessageBox.Show(ex.Message);return false;}}//读取private void button_读取_Click(object sender, EventArgs e){DataRead(FileName);}private bool DataRead(string fileName){try{if(student==null){student = new Student();}else if (mSerialize == null){mSerialize = new MSerialize(null);}string FileDir = System.Windows.Forms.Application.StartupPath + "\\studnet\\";if (!Directory.Exists(FileDir)){MessageBox.Show("student文件不存在");return false;}mSerialize.FilePath = fileName;string Ren;if (mSerialize.LoadObj(out student,out Ren)==true){txt_name.Text = student.Name;num_age.Value = student.Age;txt_six.Text = student.Six;txt_classroom.Text = student.ClaslRoom;txt_hobby.Text = student.Hoppy;MessageBox.Show("读取学生数据成功","提示");}elseMessageBox.Show("读取学生文件失败","提示");Form1 form = new Form1();form.dataRead(ref student);form.ShowDialog();return true;}catch (System.Exception ex){MessageBox.Show(ex.Message);return false;}}}
}