Binding GridView in MVC2

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Hi all, i am new to MVC2.

I am trying to bind a simple gridview. i am tring this for last 1 week.
I found a lot of code in google. but i m very much confused to implement it.

I want code to bind gridview in mvc2 not mvc3 or something else. i want it in mvc2 only.

My code as follow.
When i am running this, its giving error in view page, at foreach loop as Object reference not set to an instance of an object.

MODEL:

C#

public class Users
    {
        string ConnString = ConfigurationManager.AppSettings["ConnString"].ToString();
        DataSet ds;
       
        [Required]
        [Display(Name = "Id")]
        public int ID { get; set; }

        [Required]
        [Display(Name = "Name")]
        public string UserName { get; set; }

        [Required]
        [Display(Name = "Age")]
        public int Age { get; set; }

        [Required]
        [Display(Name = "Gender")]
        public string Gender { get; set; }


        public DataTable GetGridData()
        {
            try
            {
                ds = new DataSet();
                SqlConnection con = new SqlConnection(ConnString);
                SqlDataAdapter ada = new SqlDataAdapter("Select Id,Name,Age,Gender from Emp", ConnString);
                ada.Fill(ds);
                return ds.Tables[0];
            }
            catch (Exception err)
            {
                throw err;
            }
        }
    }

CONTROLLER:

C#

public class GridController : Controller
    {
        //
        // GET: /Grid/

        public ActionResult Index()
        {
            DataTable dtGrid = new DataTable();
            Users objGrid = new Users();
            dtGrid = objGrid.GetGridData();

            List<users> Gridd = new List<users>();

            foreach (DataRow dr in dtGrid.Rows)
            {
                Users users = new Users();
                users.ID = Convert.ToInt32(dr["ID"]);
                users.UserName = dr["Name"].ToString();
                users.Age = Convert.ToInt32(dr["Age"]);
                users.Gender = dr["Gender"].ToString();

                Gridd.Add(users);
            }
            return View("Index", Gridd);
        }
    }

AND VIEW:

XML

<%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage<IEnumerable<MyMVCTest.Models.Users>>" %>

<!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>Index</title>
</head>
<body>
    <div>
        <table width="50%">
            <tr>
                <td width="10%" height="30px">
                    ID
                </td>
                <td width="20%">
                    User Name
                </td>
                <td width="10%">
                    Age
                </td>
                <td width="10%">
                    Gender
                </td>
            </tr>
            <%foreach (var item in Model)
              { %>
            <tr>
                <td>
                    <%=Html.DisplayFor(x=>item.ID) %>
                </td>
                <td>
                    <%=Html.DisplayFor(x => item.UserName)%>
                </td>
                <td>
                    <%=Html.DisplayFor(x => item.Age)%>
                </td>
                <td>
                    <%=Html.DisplayFor(x => item.Gender)%>
                </td>
            </tr>
            <%} %>
        </table>
    </div>
</body>
</html>

Posted 20-Sep-12 19:41pm

Bhargava Katta

Updated 20-Sep-12 19:53pm

v4

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2 solutions

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Member 11091195 · Answer 1 · 2014-12-04T20:45:00

public ActionResult Index()
Dim connString As String = ConfigurationManager.ConnectionStrings("CTS_DEVConnectionString").ConnectionString
Dim conn As New SqlConnection(connString)
Dim cmd As New SqlClient.SqlCommand()
cmd.CommandType = CommandType.StoredProcedure
cmd.CommandText = "usp_CTS_viewcandstatusrecord"
cmd.Connection = conn
Dim sadp As New SqlDataAdapter()
sadp.SelectCommand = cmd
Try
conn.Open()
cmd.Parameters.AddWithValue("@company", CompName)
cmd.Parameters.AddWithValue("@startdate", Startdate)
cmd.Parameters.AddWithValue("@enddate", Enddate)
Dim ds As New DataSet()
sadp.Fill(ds)
ViewData("rptr_cd_deatil") = ds
actionresult.Add(users);
}
return View("Index", );
}
}

CodeHawkz · Answer 2 · 2012-09-20T20:00:00

Solution 1

Hi there,

*facepalm* Aren't you guys generating the views for a specific model? Install 'ReSharper' on your VS, it helps a lot to overcome these simple mistakes.

Just add @Model List<Users> to the beginning of your view file.

Hope this helps, Regards

Posted 20-Sep-12 20:00pm

CodeHawkz

Updated 20-Sep-12 20:23pm

v2

Comments

Bhargava Katta 21-Sep-12 2:20am

hi.. CodeHawkz

Could u giv sample code for this pls.

CodeHawkz 21-Sep-12 2:30am

Hi Bhargava,

Your code is correct. The only thing missing is that, your view doesn't understand what is the exact type of your Model is. By adding the line,
@Model List<Users>
to the beginning of the view file, you tell to the parser that, your model is of the type of a List of Users. Then only the parser knows how to map the properties in your view.

Hope this helps, regards

Nkumary 10-Oct-13 7:41am

Hi CodeHawkz...
I am getting this error:
CS1963: An expression tree may not contain a dynamic operation
for my view page....please help me

View Page

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/ViewMasterPage1.Master" Inherits="System.Web.Mvc.ViewPage<mvcapplication1.models.teachers>" %>

<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
Grid

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">

Grid

<table style="width:50%;">
<tr>
<td>
TeacherID
</td>
<td>
Teacher Name
</td>
<td>
Standard ID
</td>
</tr>
<%foreach (var item in Model)
{ %>
<tr>
<td>
<%=Html.DisplayFor(x => item.TeacherID)%>
</td>
<td>
<%=Html.DisplayFor(x => item.TeacherName)%>
</td>
<td>
<%=Html.DisplayFor(x => item.StandardID)%>
</td>
</tr>
<% } %>
</table>

Nkumary 10-Oct-13 7:41am

Hi CodeHawkz...
I am getting this error:
CS1963: An expression tree may not contain a dynamic operation
for my view page....please help me

View Page

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/ViewMasterPage1.Master" Inherits="System.Web.Mvc.ViewPage<mvcapplication1.models.teachers>" %>

<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
Grid

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">

Grid

<table style="width:50%;">
<tr>
<td>
TeacherID
</td>
<td>
Teacher Name
</td>
<td>
Standard ID
</td>
</tr>
<%foreach (var item in Model)
{ %>
<tr>
<td>
<%=Html.DisplayFor(x => item.TeacherID)%>
</td>
<td>
<%=Html.DisplayFor(x => item.TeacherName)%>
</td>
<td>
<%=Html.DisplayFor(x => item.StandardID)%>
</td>
</tr>
<% } %>
</table>