c# Form中向DataGridView控件添加数据的三种方式

c# Form中向DataGridView控件添加数据的三种方式

1.利用SqlDataAdapter对象向DataGridView中添加数据

using (SqlDataAdapter da = new SqlDataAdapter("select * from Product", DBService.Conn))
{
DataSet ds = new DataSet();
da.Fill(ds);
this.dataGridView1.DataSource = ds.Tables[0];
}

2. 利用SqlDataReader填充DataGridView

using (SqlCommand command = new SqlCommand("select * from product", DBService.Conn))
{
SqlDataReader dr = command.ExecuteReader();
BindingSource bs = new BindingSource();
bs.DataSource = dr;
this.dataGridView1.DataSource = bs;
}

3.利用泛型集合向DataGridView中添加数据

/*第一种泛型示例*/
//关键代码：（List<>泛型集合）
private void Form1_Load(object sender, EventArgs e)
{
//使用List<>泛型集合填充DataGridView
List<Student> students = new List<Student>();
Student hat = new Student("Hathaway", "12", "Male");
Student peter = new Student("Peter","14","Male");
Student dell = new Student("Dell","16","Male");
Student anne = new Student("Anne","19","Female");
students.Add(hat);
students.Add(peter);
students.Add(dell);
students.Add(anne);
this.dataGridView1.DataSource = students;
}

/*第二种泛型示例*/
//关键代码：（Dictionary<>泛型集合，与List<>泛型集合略有不同）
private void Form1_Load(object sender, EventArgs e)
{
//使用Dictionary<>泛型集合填充DataGridView
Dictionary<String, Studen
a2fd
t> students = new Dictionary<String, Student>();
Student hat = new Student("Hathaway", "12", "Male");
Student peter = new Student("Peter","14","Male");
Student dell = new Student("Dell","16","Male");
Student anne = new Student("Anne","19","Female");
students.Add(hat.StuName,hat);
students.Add(peter.StuName,peter);
students.Add(dell.StuName,dell);
students.Add(anne.StuName,anne);
//在这里必须创建一个BindIngSource对象，用该对象接收Dictionary<>泛型集合的对象
BindingSource bs = new BindingSource();
//将泛型集合对象的值赋给BindingSourc对象的数据源
bs.DataSource = students.Values;
this.dataGridView1.DataSource = bs;
}