Question

我用这段代码创建了一个类：

public class Customer
{
    public Customer() { }
    public Customer(Customer cust)
    {
        ID = cust.ID;
        Name = cust.Name;
        FatherName = cust.FatherName;
        Email = cust.Email;
    }
    public int ID { get; set; }
    public string Name { get; set; }
    public string FatherName { get; set; }
    public string Email { get; set; }
}

并创建此函数以加载包含一些数据的列表：

public List<Customer> Generate_Data()
{
    List<Customer> lstCustomer = new List<Customer>();
    Customer customer = new Customer();

    customer.ID = 1;
    customer.Name = "John Cena";
    customer.FatherName = "John";
    customer.Email = "cena@gmail.com";
    lstCustomer.Add(new Customer(customer));

    customer.ID = 2;
    customer.Name = "Mokesh";
    customer.FatherName = "Rajnikant";
    customer.Email = "mokesh@gmail.com";
    lstCustomer.Add(new Customer(customer));

    customer.ID = 3;
    customer.Name = "Bilal Ahmad";
    customer.FatherName = "Kashif";
    customer.Email = "bilal@gmail.com";
    lstCustomer.Add(new Customer(customer));

    customer.ID = 4;
    customer.Name = "Chin Shang";
    customer.FatherName = "Shang Woe";
    customer.Email = "chinshang@gmail.com";
    lstCustomer.Add(new Customer(customer));

    return lstCustomer;
}

返回此列表以与网格绑定。代码是：

List<Customer> lstCustomer = new List<Customer>();
lstCustomer = Generate_Data();
GridView1.DataSource = lstCustomer;
GridView1.DataBind();

我的问题是：

我在aspx页面添加了4个文本框和一个按钮，名称为：Id,Name,FatherName,Email 当我单击按钮时，我想将文本框的新值添加到gridview1行。我想动态地向gridview添加一行。
如果我定义一个空的gridview，如何将我的文本框值添加到gridview行？与问题1不一样的方法吗？

Answer 1

ASPX：

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><br />
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox><br />
<asp:TextBox ID="TextBox4" runat="server"></asp:TextBox><br />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
<asp:GridView ID="GridView1" runat="server"/>

代码背后：

public class Customer
{
    public Customer() { }
    public Customer(Customer cust)
    {
        ID = cust.ID;
        Name = cust.Name;
        FatherName = cust.FatherName;
        Email = cust.Email;
    }
    public int ID { get; set; }
    public string Name { get; set; }
    public string FatherName { get; set; }
    public string Email { get; set; }
}
protected void Button1_Click(object sender, EventArgs e)
{
    List<Customer> lstCustomer = new List<Customer>();
    if (Session["dt"] != null)
    {
      lstCustomer = (List<Customer>)Session["dt"];
    }
    Customer customer = new Customer();
    customer.ID = int.Parse(TextBox1.Text);
    customer.Name = TextBox2.Text;
    customer.FatherName = TextBox2.Text;
    customer.Email = TextBox2.Text;
    lstCustomer.Add(new Customer(customer));
    GridView1.DataSource = lstCustomer;
    GridView1.DataBind();
    Session["dt"] = lstCustomer;
}

已更新！ 的

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        List<Customer> lstCustomer = new List<Customer>();
        Customer customer = new Customer();

        customer.ID = 1;
        customer.Name = "John Cena";
        customer.FatherName = "John";
        customer.Email = "cena@gmail.com";
        lstCustomer.Add(new Customer(customer));

        customer.ID = 2;
        customer.Name = "Mokesh";
        customer.FatherName = "Rajnikant";
        customer.Email = "mokesh@gmail.com";
        lstCustomer.Add(new Customer(customer));

        customer.ID = 3;
        customer.Name = "Bilal Ahmad";
        customer.FatherName = "Kashif";
        customer.Email = "bilal@gmail.com";
        lstCustomer.Add(new Customer(customer));

        customer.ID = 4;
        customer.Name = "Chin Shang";
        customer.FatherName = "Shang Woe";
        customer.Email = "chinshang@gmail.com";
        lstCustomer.Add(new Customer(customer));
        Session["dt"] = lstCustomer;

    }
}

Answer 2

您需要在回发期间保留您的收藏。根据您的收藏量有多大，您可以考虑将其保存在视图状态，会话等中。

List<Customer> lstCustomer = new List<Customer>();
lstCustomer = Generate_Data();
ViewState["Customers"] = lstCustomer;
GridView1.DataSource = lstCustomer;
GridView1.DataBind();

因此，当用户使用数据填充文本框并启动回发时，您可以创建新的客户对象并将其添加到现有集合中。然后将数据重新绑定到网格。

Customer customer = new Customer(){ID=int.Parse(TextBox1.Text), Name = TextBox2.Text, 
    FatherName = TextBox2.Text, Email = TextBox2.Text }
var lstCustomer = ViewState["Customers"] as List<Customers>;
    lstCustomer.Add(customer);

请注意，您需要将[Serializable]属性添加到Customer类。

Answer 3

您只需将AutoGenerateInsertButton="True"添加到<asp:GridView>代码即可。

Answer 4

所以，我会这样做。首先，我扩展了lstCustomer的范围，以便它通过回发持续存在。

然后在按钮事件处理程序中，我会写这样的东西

//Here we create the object
Customer customer = new Customer();
customer.foo = txtFoo.Text;
customer.bar = txtBar.Text;
//....

//Then we add it to the list
lstCustomer.Add(customer);

//and databind on it again
GridView1.DataSource = lstCustomer;
GridView1.DataBind();

如果您想让用户对数据执行某些操作（或者您希望持久保存到数据库或其他内容），这也会有所帮助。

将新行数据添加到gridview asp.net c＃

4 个答案: