Question

我想将List of Dictionary绑定到GridView。

var liste = new List<Dictionary<string, string>>();
var dictionary = new Dictionary<string,string>();
dictionary["Id"] = "111";
dictionary["Description"] = "text to show";
dictionary["OtherInfo"] = "other text";
liste.Add(dictionary);
gvClients.DataSource = liste;
gvClients.DataBind();

aspx中的代码：

<asp:GridView ID="gvClients" runat="server" AutoGenerateColumns="true" GridLines="None"
  AllowPaging="True" CssClass="gridview" AlternatingRowStyle-CssClass="alt" Width="80%">
<AlternatingRowStyle CssClass="alt"></AlternatingRowStyle>
  <Columns>
    <asp:TemplateField HeaderText="PropertyName">
      <ItemTemplate>
        <asp:Label ID="Label1" runat="server" Text='<%# Eval("Description") %>'></asp:Label>
      </ItemTemplate>
    </asp:TemplateField>
    <asp:TemplateField HeaderText="PropertyName">
      <ItemTemplate>
        <asp:Label ID="Label2" runat="server" Text='<%# Eval("OtherInfo") %>'></asp:Label>
      </ItemTemplate>
    </asp:TemplateField>
  </Columns>
</asp:GridView>

如何将GridView绑定到该Object（或System.Collections.HashTable）。

修改

极客的字典工作解决方案但不适用于HashTable，是否有解决方案？

var liste = new List<System.Collections.Hashtable>();
var table = new System.Collections.Hashtable();
table["Denomination"] = "a";
table["Denomination2"] = "an";
liste.Add(table);

var result = liste.Select(map => new
{
    IdClient = map["Denomination"],
    Denomination = map["Denomination2"]
}).ToList();

gvClients.DataSource = result;
gvClients.DataBind();

我有这个错误：

The data source for GridView with id 'gvClients' did not have any properties or attributes from which to generate columns.

当我像这样修改映射时：

var result = liste.Select(map => new
{
    IdClient = map["Denomination"],
    Denomination = map["Denomination2"],
    Test = "test"
}).ToList();

它只显示Test属性。

由于

Answer 1

查看以下代码。

~~＆lt;％@ Page Language =“C＃”AutoEventWireup =“true”CodeFile =“Default.aspx.cs”Inherits =“_ Default”％＆gt;~~

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <title></title>
    </head>
    <body>
        <form id="form1" runat="server">
        <div>
            <asp:GridView ID="gvClients" runat="server" AutoGenerateColumns="false" GridLines="None"
                CssClass="gridview" AlternatingRowStyle-CssClass="alt" Width="80%">
                <AlternatingRowStyle CssClass="alt"></AlternatingRowStyle>
                <Columns>
                    <asp:BoundField DataField="Key" />
                    <asp:BoundField DataField="Value" />
                </Columns>
            </asp:GridView>
        </div>
        </form>
    </body>
    </html>




using System;
        using System.Collections.Generic;
        using System.Linq;
        using System.Web;
        using System.Web.UI;
        using System.Web.UI.WebControls;
        using System.Collections.Specialized;

        public partial class _Default : System.Web.UI.Page
        {


            protected void Page_Load(object sender, EventArgs e)
            {
                if (!IsPostBack)
                {
                    var liste = new List<Dictionary<string, string>>();
                    var dictionary = new Dictionary<string, string>();
                    dictionary["PropertyName"] = "text to show";
                    var dictionary2 = new Dictionary<string, string>();
                    dictionary2["PropertyName"] = "text to show1";
                    liste.Add(dictionary2);
                    liste.Add(dictionary);
                    var result = liste.SelectMany(x => x);
                    gvClients.DataSource = result;
                    gvClients.DataBind();
                }

            }
        }

修改

我已根据您的要求编辑了代码。请尝试使用此代码，如果您遇到任何问题，请告知我们。

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div> <asp:GridView ID="gvClients" runat="server" AutoGenerateColumns="true" GridLines="None" CssClass="gridview" AlternatingRowStyle-CssClass="alt" Width="80%"> <AlternatingRowStyle CssClass="alt"></AlternatingRowStyle> <Columns> <asp:TemplateField HeaderText="Description"> <ItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%# Eval("Description") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="OtherInfo"> <ItemTemplate> <asp:Label ID="Label2" runat="server" Text='<%# Eval("OtherInfo") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> </div> </form> </body> </html> using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public class Client { public string ID { get; set; } public string Description { get; set; } public string OtherInfo { get; set; } } public partial class Default3 : System.Web.UI.Page { List<Client> list=new List<Client>(); protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { var liste = new List<Dictionary<string, string>>(); var dictionary = new Dictionary<string, string>(); dictionary["ID"] = "111"; dictionary["Description"] = "XYZ"; dictionary["OtherInfo"] = "Addd"; liste.Add(dictionary); var result = liste.Select(map => new Client { ID = map["ID"], Description = map["Description"], OtherInfo = map["OtherInfo"] }).ToList(); gvClients.DataSource = result; gvClients.DataBind(); } } }

EDITII

如果您想使用Hashtable，请执行以下操作

创建一个名为Client的新类（您想要的任何内容）

public class Client { public string IdClient { get; set; } public string Denomination { get; set; } }

然后按如下方式查询列表

var liste = new List<Hashtable>(); var table = new Hashtable(); table["Denomination"] = "a"; table["Denomination2"] = "an"; liste.Add(table); var result = liste.Select(map => new Client() { IdClient = map["Denomination"].ToString(), Denomination = map["Denomination2"].ToString() }); gvClients.DataSource = result; gvClients.DataBind();

Databind将Dictionary列入GridView

1 个答案: