Display multiple columns in GridView BoundField using C# and VB.Net in ASP.Net

Hi sambath,

Check this example. Now please take its reference and correct your code.

Database

Here I am making use of Microsoft’s Northwind Database. You can download it from here.

Download Northwind Database

HTML

<asp:GridView ID="gvEmployees" runat="server" AutoGenerateColumns="false" OnRowDataBound="OnRowDataBound">
    <Columns>
        <asp:BoundField DataField="EmployeeID" HeaderText="EmployeeID" />
        <asp:BoundField DataField="" HeaderText="Name" />
        <asp:BoundField DataField="Country" HeaderText="Country" />
    </Columns>
</asp:GridView>

Namespaces

C#

using System.Data;
using System.Data.SqlClient;
using System.Configuration;

VB.Net

Imports System.Data.SqlClient
Imports System.Data

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        this.BindGrid();
    }
}
private void BindGrid()
{
    string str = ConfigurationManager.ConnectionStrings["ConString"].ConnectionString;
    using (SqlConnection conn = new SqlConnection(str))
    {
        using (SqlCommand cmd = new SqlCommand("SELECT EmployeeID,FirstName, LastName,Country FROM Employees", conn))
        {
            using (SqlDataAdapter da = new SqlDataAdapter(cmd))
            {
                using (DataTable dt = new DataTable())
                {
                    da.Fill(dt);
                    this.gvEmployees.DataSource = dt;
                    this.gvEmployees.DataBind();
                }
            }
        }
    }
}

protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        e.Row.Cells[1].Text = string.Format("{0} {1}", DataBinder.Eval(e.Row.DataItem, "FirstName"), DataBinder.Eval(e.Row.DataItem, "LastName"));
    }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Me.BindGrid()
    End If
End Sub

Private Sub BindGrid()
    Dim str As String = ConfigurationManager.ConnectionStrings("ConString").ConnectionString
    Using conn As SqlConnection = New SqlConnection(str)
        Using cmd As SqlCommand = New SqlCommand("SELECT EmployeeID,FirstName, LastName,Country FROM Employees", conn)
            Using da As SqlDataAdapter = New SqlDataAdapter(cmd)
                Using dt As DataTable = New DataTable()
                    da.Fill(dt)
                    Me.gvEmployees.DataSource = dt
                    Me.gvEmployees.DataBind()
                End Using
            End Using
        End Using
    End Using
End Sub

Protected Sub OnRowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
    If e.Row.RowType = DataControlRowType.DataRow Then
        e.Row.Cells(1).Text = String.Format("{0} {1}", DataBinder.Eval(e.Row.DataItem, "FirstName"), DataBinder.Eval(e.Row.DataItem, "LastName"))
    End If
End Sub

Screenshot