Привязка данных: не содержит свойство с именем 'Id' - PullRequest
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Привязка данных: не содержит свойство с именем 'Id'

0 голосов
/ 06 февраля 2020

Я видел эти вопросы раньше на других сайтах, но не могу найти решение. Я только что создал простое представление данных, используя вид сетки

Webform1.aspx 

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="CusDB.WebForm1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False" CellPadding="4" DataKeyNames="Id" ForeColor="#333333" GridLines="None" ShowFooter="True" OnRowCommand="GridView1_RowCommand" >
                <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
                <Columns>
                    <asp:TemplateField HeaderText="Id" InsertVisible="False" SortExpression="CusId">
                        <EditItemTemplate>
                            <asp:Label ID="Label1" runat="server" Text='<%# Eval("CusId") %>'></asp:Label>
                        </EditItemTemplate>
                        <ItemTemplate>
                            <asp:Label ID="Label1" runat="server" Text='<%# Bind("CusId") %>'></asp:Label>
                        </ItemTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="CusId" SortExpression="CusId">
                        <EditItemTemplate>
                            <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("CusId") %>'></asp:TextBox>
                        </EditItemTemplate>
                        <FooterTemplate>
                            <asp:TextBox ID="txtCusId" runat="server"></asp:TextBox>
                        </FooterTemplate>
                        <ItemTemplate>
                            <asp:Label ID="Label2" runat="server" Text='<%# Bind("CusId") %>'></asp:Label>
                        </ItemTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="Name" SortExpression="Name">
                        <EditItemTemplate>
                            <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Name") %>'></asp:TextBox>
                        </EditItemTemplate>
                        <FooterTemplate>
                            <asp:TextBox ID="txtName" runat="server"></asp:TextBox>
                        </FooterTemplate>
                        <ItemTemplate>
                            <asp:Label ID="Label3" runat="server" Text='<%# Bind("Name") %>'></asp:Label>
                        </ItemTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="Mail" SortExpression="Mail">
                        <EditItemTemplate>
                            <asp:TextBox ID="TextBox3" runat="server" Text='<%# Bind("Mail") %>'></asp:TextBox>
                        </EditItemTemplate>
                        <FooterTemplate>
                            <asp:TextBox ID="txtMail" runat="server"></asp:TextBox>
                        </FooterTemplate>
                        <ItemTemplate>
                            <asp:Label ID="Label4" runat="server" Text='<%# Bind("Mail") %>'></asp:Label>
                        </ItemTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="Password" SortExpression="Password">
                        <EditItemTemplate>
                            <asp:TextBox ID="TextBox4" runat="server" Text='<%# Bind("Password") %>'></asp:TextBox>
                        </EditItemTemplate>
                        <FooterTemplate>
                            <asp:TextBox ID="txtPassword" runat="server"></asp:TextBox>
                        </FooterTemplate>
                        <ItemTemplate>
                            <asp:Label ID="Label5" runat="server" Text='<%# Bind("Password") %>'></asp:Label>
                        </ItemTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="City" SortExpression="City">
                        <EditItemTemplate>
                            <asp:DropDownList ID="DropDownList1" runat="server" SelectedValue='<%# Bind("City") %>'>
                                <asp:ListItem>Select City</asp:ListItem>
                                <asp:ListItem>Bangalore</asp:ListItem>
                                <asp:ListItem>Chennai</asp:ListItem>
                                <asp:ListItem>Hyderabad</asp:ListItem>
                                <asp:ListItem>Lucknow</asp:ListItem>
                                <asp:ListItem>New Delhi</asp:ListItem>
                            </asp:DropDownList>
                        </EditItemTemplate>
                        <FooterTemplate>
                            <asp:DropDownList ID="txtDrop" runat="server">
                                <asp:ListItem>Select City</asp:ListItem>
                                <asp:ListItem>Bangalore</asp:ListItem>
                                <asp:ListItem>Chennai</asp:ListItem>
                                <asp:ListItem>Hyderabad</asp:ListItem>
                                <asp:ListItem>Lucknow</asp:ListItem>
                                <asp:ListItem>New Delhi</asp:ListItem>
                            </asp:DropDownList>
                        </FooterTemplate>
                        <ItemTemplate>
                            <asp:Label ID="Label6" runat="server" Text='<%# Bind("City") %>'></asp:Label>
                        </ItemTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="Action">
                        <EditItemTemplate>
                            <asp:Button ID="txtUpdate" CommandArgument='<%# Eval("CusId") %>' CommandName='UpdateRow' runat="server" Text="Update" />
                            <asp:Button ID="txtCancel" CommandArgument='<%# Eval("CusId") %>' CommandName='CancelRow' runat="server" Text="Cancel" />
                        </EditItemTemplate>
                        <FooterTemplate>
                            <asp:Button ID="txtInsert" runat="server" Text="Insert" />
                        </FooterTemplate>
                        <ItemTemplate>
                            <asp:Button ID="txtEdit" CommandArgument='<%# Eval("CusId") %>' CommandName='EditRow' runat="server" Text="Edit" />
                            <asp:Button ID="txtDelete" CommandArgument='<%# Eval("CusId") %>' CommandName='DeleteRow' runat="server" Text="Delete" />
                        </ItemTemplate>
                    </asp:TemplateField>
                </Columns>
                <EditRowStyle BackColor="#999999" />
                <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
                <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
                <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
                <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
                <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
                <SortedAscendingCellStyle BackColor="#E9E7E2" />
                <SortedAscendingHeaderStyle BackColor="#506C8C" />
                <SortedDescendingCellStyle BackColor="#FFFDF8" />
                <SortedDescendingHeaderStyle BackColor="#6F8DAE" />
            </asp:GridView>
        </div>
    </form>
</body>
</html>

WebForm1.aspx.cs 

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

namespace CusDB
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                BindGridDate();
            }
        }

        private void BindGridDate()
        {
            GridView1.DataSource = Details.GetAlldetails();
            GridView1.DataBind(); **//Getting error here**
        }

        protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            if (e.CommandName == "EditRow")
            {
                int rowIndex = ((GridViewRow)((Button)e.CommandSource).NamingContainer).RowIndex;
                GridView1.EditIndex = rowIndex;
                BindGridDate();
            }
            else if (e.CommandName == "DeleteRow")
            {
                Details.DeleteCustomer(Convert.ToInt32(e.CommandArgument));
                BindGridDate();
            }
            else if (e.CommandName == "CancelRow")
            {
                GridView1.EditIndex = -1;
                BindGridDate();
            }
            else if (e.CommandName == "UpdateRow")
            {
                int rowIndex = ((GridViewRow)((Button)e.CommandSource).NamingContainer).RowIndex;
                int cusId = Convert.ToInt32(e.CommandArgument);
                string name = ((TextBox)GridView1.Rows[rowIndex].FindControl("TextBox2")).Text;
                string mail = ((TextBox)GridView1.Rows[rowIndex].FindControl("TextBox3")).Text;
                string password = ((TextBox)GridView1.Rows[rowIndex].FindControl("TextBox4")).Text;
                string city = ((DropDownList)GridView1.Rows[rowIndex].FindControl("DropDownList1")).SelectedValue;
                Details.UpdateCustomer(cusId, name, mail, password, city);
                GridView1.EditIndex = -1;
                BindGridDate();
            }
            else if (e.CommandName == "InsertRow")
            {
                string name = ((TextBox)GridView1.FooterRow.FindControl("txtName")).Text;
                string mail = ((TextBox)GridView1.FooterRow.FindControl("txtMail")).Text;
                string password = ((TextBox)GridView1.FooterRow.FindControl("txtPassword")).Text;
                string city = ((DropDownList)GridView1.FooterRow.FindControl("txtDrop")).SelectedValue;
                Details.InsertCustomer(name, mail, password, city);
                BindGridDate();
            }
        }
    }
}

ОШИБКА: привязка данных : «CusDB.Customer» не содержит свойства с именем «Id».

Я пытался изменить Eval Id на Eval CusId

Details.cs 

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Data;
using System.Data.SqlClient;


namespace CusDB
{
    public class Customer
    {
      public int CusId{ get; set; }
        public string Name{ get; set;}
        public string Mail{get; set;}
        public string Password{get; set;}
        public string City{get; set;}
    }
    public class Details
    {
        public static List<Customer> GetAlldetails()
        {
            List<Customer> listdetails = new List<Customer>();
            string CS = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
            using (SqlConnection con = new SqlConnection(CS))
            {
                SqlCommand cmd = new SqlCommand("select * from Final", con);
                con.Open();
                SqlDataReader rdr = cmd.ExecuteReader();
                while (rdr.Read())
                {
                    Customer customer = new Customer();
                    customer.CusId = Convert.ToInt32(rdr["CusId"]);
                    customer.Name = rdr["Name"].ToString();
                    customer.Mail = rdr["Mail"].ToString();
                    customer.Password = rdr["Password"].ToString();
                    customer.City = rdr["City"].ToString();
                    listdetails.Add(customer);
                }
            }
            return listdetails;
        }

        public static void DeleteCustomer(int CusId)
        {
            string CS = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
            using (SqlConnection con = new SqlConnection(CS))
            {
                SqlCommand cmd = new SqlCommand("delete from Final where CusId = @CusId", con);
                SqlParameter param = new SqlParameter("@CusId", CusId);
                cmd.Parameters.Add(param);
                con.Open();
                cmd.ExecuteNonQuery();
            }
        }

        public static int UpdateCustomer(int CusId, string Name, string Mail, string Password, string City)
        {
            string CS = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
            using (SqlConnection con = new SqlConnection(CS))
            {
                string UpdateQuery = "update Final set Name = @Name, " + "Mail = @Mail, Password = @Password, City = @City where CusId = @CusId";
                SqlCommand cmd = new SqlCommand(UpdateQuery, con);
                SqlParameter paramId = new SqlParameter("@CusId", CusId);
                cmd.Parameters.Add(paramId);
                SqlParameter paramName = new SqlParameter("@Name", Name);
                cmd.Parameters.Add(paramName);
                SqlParameter paramMail = new SqlParameter("@Mail", Mail);
                cmd.Parameters.Add(paramMail);
                SqlParameter paramPassword = new SqlParameter("@Password", Password);
                cmd.Parameters.Add(paramPassword);
                SqlParameter paramCity = new SqlParameter("@City", City);
                cmd.Parameters.Add(paramCity);
                con.Open();
                return cmd.ExecuteNonQuery();
            }


        }

        public static int InsertCustomer(string Name, string Mail, string Password, string City)
        {
            string CS = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
            using (SqlConnection con = new SqlConnection(CS))
            {
                string updateQuery = "insert into Final (Name, Mail, Password, City)" + "values (@Name, @Mail, @Password, @City)";
                SqlCommand cmd = new SqlCommand(updateQuery, con);
                SqlParameter paramName = new SqlParameter("@Name", Name);
                cmd.Parameters.Add(paramName);
                SqlParameter paramMail = new SqlParameter("@Mail", Mail);
                cmd.Parameters.Add(paramMail);
                SqlParameter paramPassword = new SqlParameter("@Password", Password);
                cmd.Parameters.Add(paramPassword);
                SqlParameter paramCity = new SqlParameter("@City", City);
                cmd.Parameters.Add(paramCity);
                con.Open();
                return cmd.ExecuteNonQuery();

            }
        }
    }
}

SQL Это моя SQL Таблица 

CREATE TABLE [dbo].[Final] (
    [Id]       INT           IDENTITY (1, 1) NOT NULL,
    [CusId]    INT    NOT NULL,
    [Name]     NVARCHAR (50) NOT NULL,
    [Mail]     NVARCHAR (50) NOT NULL,
    [Password] NVARCHAR (50) NOT NULL,
    [City]     NVARCHAR (50) NOT NULL,
    PRIMARY KEY CLUSTERED ([Id] ASC)
);
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