[英]Data Grid View — binding columns to list
My project in c# contains dataGridView and I have a object containing data. 我在C#中的项目包含dataGridView,并且我有一个包含数据的对象。
public class Data
{
public List<string> list {get;set;}
}
The data is initialized at program startup and the length of list can change. 数据在程序启动时初始化,并且列表长度可以更改。 I want to bind the gridView to object that when gridView show each columns in gridview is bound to list in data object like this: 我想将gridView绑定到当gridView显示gridview中的每一列都绑定到数据对象中的对象时,如下所示:
if list count = 3 , than i want gridView contains 3 columns - column0 bind to list[0], column01 bind to list[1], and so on. 如果列表计数= 3,那么我希望gridView包含3列-column0绑定到list [0],column01绑定到list [1],依此类推。
i think that i need to bind gridView when form is loading , but how can i do this in my code? 我认为在表单加载时需要绑定gridView,但是如何在我的代码中这样做呢?
<asp:GridView runat="server" ID="GridView1" AutoGenerateColumns="true" >
</asp:GridView>
private static Random _rnd = new Random(DateTime.Now.Millisecond);
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
var columns = _rnd.Next(3, 10);
var data = new { list = Enumerable.Range(1, columns).ToList() };
GridView1.DataSource = data.list.Pivot();
GridView1.DataBind();
}
}
public static class Extensions
{
public static DataTable Pivot<T>(this IEnumerable<T> list)
{
if (list == null)
throw new ArgumentNullException("list");
DataTable result = new DataTable();
for (int index = 0; index < list.Count(); index++)
{
DataColumn column = new DataColumn(string.Format("Column{0}", index), typeof(T));
result.Columns.Add(column);
}
var dataRow = result.NewRow().ItemArray = list.Select(item => (object)item).ToArray();
result.Rows.Add(dataRow);
return result;
}
}
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