how to store dbcontext.emps.ToList() data in a data table - entity-framework

Question

how to store the dbcontext.emp.tolist(); data in datatable to perform sorting using entity frame database first approach and linq .
here i am uploading my code.
please help.
how to perform soting operation for grid using entity frame work and linq.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
namespace sortingby_crud
{
public partial class WebForm2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
//this.BindGrid();
GridView1.DataSource = BindGrid();
GridView1.DataBind();
}
}
private DataTable BindGrid()
{
using (dbEntities db = new dbEntities())
{
//GridView1.DataSource = db.emps.ToList();
//GridView1.DataBind();
DataTable dt = new DataTable();
dt= db.emps.ToList();
return dt;
}
}
public SortDirection dir
{
get
{
if (ViewState["dirState"] == null)
{
ViewState["dirState"] = SortDirection.Ascending;
}
return (SortDirection)ViewState["dirState"];
}
set
{
ViewState["dirState"] = value;
}
}
protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
{
string sortingDirection = string.Empty;
if (dir == SortDirection.Ascending)
{
dir = SortDirection.Descending;
sortingDirection = "Desc";
}
else
{
dir = SortDirection.Ascending;
sortingDirection = "Asc";
}
DataView sortedView = new DataView(BindGrid());
sortedView.Sort = e.SortExpression + " " + sortingDirection;
GridView1.DataSource = sortedView;
GridView1.DataBind();
}
}
}

Answer 1

public DataTable data() // or keep return type is also
as void .
/convert db.context in data table.
{
DataTable table = new DataTable();
var list = db.SupplierAssignmentones.ToList();
//Defining the header for the datatable.
table.Columns.Add("VendorId", typeof(int));
table.Columns.Add("VendorName", typeof(string));
table.Columns.Add("VendorDescription", typeof(string));
table.Columns.Add("SupHie1_CD", typeof(string));
table.Columns.Add("SupHie2_CD", typeof(string));
table.Columns.Add("SupHie3_CD", typeof(string));
table.Columns.Add("Is_Active", typeof(string));
//assigning the data for data table rows.
foreach (var data in list)
{
table.Rows.Add(data.VendorId, data.VendorName, data.VendorDescription, data.SupHie1_CD, data.SupHie2_CD, data.SupHie3_CD, data.Is_Active);
}
return table;
}