將數據從List <>加載到datagridview中customerlist

Question

我需要幫助填充DataGridView。當我調試時，我可以看到它有記錄，但它們沒有顯示在DataGridView中。這裏是我的代碼（請注意，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

您在函數範圍創建DataGridView，並且永遠不會將其添加到任何容器。由於沒有提及它，只要函數退出就會消失。

你需要做的是這樣的：該函數完成

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

之前。像這樣：

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(); 
}