将数据从List <>加载到datagridview中customerlist

Question

我需要帮助填充DataGridView。当我调试时，我可以看到它有记录，但它们没有显示在DataGridView中。这里是我的代码（请注意，我是C＃中的新手）：

private void listCustomer_Frm_Load(object sender, EventArgs e) 
{ 
    DataGridView custDGV = new DataGridView(); 
    customerList = CustomerDB.GetListCustomer(); 
    custDGV.DataSource = customerList; 
    cm = (CurrencyManager)custDGV.BindingContext[customerList]; 
    cm.Refresh(); 
} 

Answer 1

您在函数范围创建DataGridView，并且永远不会将其添加到任何容器。由于没有提及它，只要函数退出就会消失。

你需要做的是这样的：该函数完成

this.Controls.Add(custDGV); // add the grid to the form so it will actually display 

之前。像这样：

private void listCustomer_Frm_Load(object sender, EventArgs e) 
{ 
    DataGridView custDGV = new DataGridView(); 
    this.Controls.Add(custDGV); // add the grid to the form so it will actually display 
    customerList = CustomerDB.GetListCustomer(); 
    custDGV.DataSource = customerList; 
    cm = (CurrencyManager)custDGV.BindingContext[customerList]; 
    cm.Refresh(); 
}