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接續上一篇C#泛型應用, 今天寫一個實體化泛型類別的物件初始化DataGridView欄位的範例
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先貼出畫面結果如下:
情況1:
定義 Employee類別如下
1: public class Employee
2: {3: public int num;
4: public string name;
5: public string sex;
6: public int age;
7: public string birthday;
8: public long salary;
9: }假設產生兩筆Employee資料
1: List<Employee> employee = new List<Employee>()
2: {3: new Employee() { name = "Henery", num = 1, sex = "男" },
4: new Employee() { name = "Jane", num = 2, sex = "女" }
5: };將employee資料餵給dataGridView1
1: dataGridView1.DataSource = employee;按下測試Employee發現資料出不來@@
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情況2: 修改情況1無法加入DataGridView的窘境, Employee2欄位名稱個數與Employee一樣, 但這次每個欄位都加入get/set功能
定義 Employee2類別如下
1: public class Employee2
2: {3: public int num { get; set; }
4: public string name { get; set; }
5: public string sex { get; set; }
6: public int age { get; set; }
7: public string birthday { get; set; }
8: public long salary { get; set; }
9: }假設產生兩筆Employee2資料
1: List<Employee2> employee2 = new List<Employee2>()
2: {3: new Employee2() { name = "Henery", num = 1, sex = "男" },
4: new Employee2() { name = "Jane", num = 2, sex = "女" }
5: };將employee2資料餵給dataGridView1
1: dataGridView1.DataSource = employee2;按下<測試Employee2>按鈕, 這次總算可以顯示在dataGridView1上了^_^
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情況3: 仿照情況2, 每個欄位都加入get/set功能, 並且泛型化資料格式
1: public class Employee<T>
2: {3: public T num { get; set; }
4: public T name { get; set; }
5: public T sex { get; set; }
6: public T age { get; set; }
7: public T birthday { get; set; }
8: public T salary { get; set; }
9: }假設產生兩筆Employee<T>資料
1: List<Employee<object>> employee = new List<Employee<object>>()
2: {3: new Employee<object>() { age = 25, birthday = "1998/8/28", name = "Henery", num = 1, salary = 1000, sex = "男" },
4: new Employee<object>() { age = 23, birthday = "2000/5/28", name = "Jane", num = 1, salary = 1000, sex = "女" }
5: };或是用下列Add方法連續加入兩筆資料至List
1: List<Employee<object>> employee = new List<Employee<object>>();
2: employee.Add(new Employee<object>() { age = 25, birthday = "1998/8/28", name = "Henery", num = 1, salary = 1000, sex = "男" });
3: employee.Add(new Employee<object>() { age = 23, birthday = "2000/5/28", name = "Jane", num = 1, salary = 1000, sex = "女" });
接著,將employee資料餵給dataGridView1
1: dataGridView1.DataSource = employee;顯示結果如下:
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