DataGridView数据绑定 [英] DataGridView databinding

问题描述

我举一个简单的例子来解释我想要什么：

I give a simple example to explain what I want:

我定义了一个名为 Student 的类，它有两个属性：名称和主题。

I defined a class called Student, it has two properties: Name and Subjects.

public class Student()
{
     public string Name;
     public List<string> Subjects;
}

我创建了两个Student类实例，例如：

I created two instances of Student class, for example:

List<string> jackSubjects = new List<string>();
jackSubjects.Add("Math");
jackSubjects.Add("Physics");
Student Jack = new Student("Jack", jackSubjects);
List<string> alanSubjects = new List<string>();
alanSubjects.Add("Accounting");
alanSubjects.Add("Science");
Student Alan = new Student("Alan", alanSubjects);

然后我创建一个列表StudentList：

Then I create a List studentList:

List<Student> studentList = new List<Student>();
studentList.Add(Jack);
studentList.Add(Alan);

我的问题是，有什么方法可以对这个 studentList进行数据绑定和 DataGridView ，如下所示：

My question is, is there any way I can databind this studentList with a DataGridView, something like the following:

dataGridView.DataSource = studentList;

第一列是学生姓名，第二列是 combobox 会显示该学生的所有科目。

The first column is the student name and the second column is a combobox which shows all the subjects for the student.

谢谢您的时间。

推荐答案

类似的方法将起作用：

1. 将RowDataBound事件添加到您的网格并创建一个模板列以保存主题的下拉列表：

1. Add a RowDataBound event to your grid and create a template column to hold the dropdownlist for the subjects:

<asp:GridView ID="dataGridView" runat="server" AutoGenerateColumns="false" OnRowDataBound="dataGridView_RowDataBound">
   <Columns>
       <asp:BoundField DataField="Name" />
       <asp:TemplateField>
           <ItemTemplate>
               <asp:DropDownList ID="subjects" runat="server" ></asp:DropDownList>
           </ItemTemplate>
       </asp:TemplateField>
   </Columns>

然后在代码上像这样处理RowDataBound事件：

Then on code behind handle the RowDataBound event as so:

protected void dataGridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
  if (e.Row.RowType == DataControlRowType.DataRow)
  {
    var ddl = (e.Row.FindControl("subjects") as DropDownList);
    ddl.DataSource = (e.Row.DataItem as Student).Subjects;
    ddl.DataBind();
  }
}

渲染：

顺便说一句，您的学生班级应该看起来像这样：

BTW, your Student class should look like this:

public class Student
{
     public string Name {get;set;}
     public List<string> Subjects {get;set;}

     public Student(string name, List<string> subjects)
     {
         Name = name;
         Subjects = subjects;
     }
}

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