Convert date format to ddMMyyyy inside ASP.Net GridView using C# and VB.Net

Hii Lingers, 

Kindly refer below sample.

Darabase

HTML

<asp:GridView ID="avDetails" runat="server" AutoGenerateColumns="False" DataKeyNames="ID" OnRowDataBound="OnRowDataBound">
<Columns>
    <asp:TemplateField HeaderText="PROD CODE" SortExpression="Id">
        <ItemTemplate>
            <%# Eval("Id")%>
        </ItemTemplate>
    </asp:TemplateField>
    <asp:BoundField DataField="deliverydate" HeaderText="RECEIVED" SortExpression="deliverydate" />
</Columns>
</asp:GridView>

Namespaces

C#

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

VB.Net

Imports System.Data
Imports System.Data.SqlClient
Imports System.Configuration
Imports System.Globalization

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        avDetails.DataSource = BindUserDetails1("");
        avDetails.DataBind();
    }
}

private DataTable BindUserDetails1(string sortExpession)
{
    string conn = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(conn))
    {
        using (SqlCommand cmd = new SqlCommand("SELECT ID, DeliveryDate FROM Datetable", con))
        {
            using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
            {
                using (DataTable dt = new DataTable())
                {
                    sda.Fill(dt);
                    return dt;
                }
            }
        }
    }
}

protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        string _date = e.Row.Cells[1].Text;
        DateTime dt;
        if (DateTime.TryParse(_date, out dt))
        {
            e.Row.Cells[1].Text = dt.ToString("dd/MM/yyyy");
        }
        else if (DateTime.TryParse(_date, CultureInfo.CreateSpecificCulture("en-US"), DateTimeStyles.None, out dt))
        {
            e.Row.Cells[1].Text = dt.ToString("dd/MM/yyyy");
        }
    }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not IsPostBack Then
        avDetails.DataSource = BindUserDetails1("")
        avDetails.DataBind()
    End If
End Sub

Private Function BindUserDetails1(ByVal sortExpession As String) As DataTable
    Dim conn As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Using con As SqlConnection = New SqlConnection(conn)
        Using cmd As SqlCommand = New SqlCommand("SELECT ID, DeliveryDate FROM Datetable", con)
            Using sda As SqlDataAdapter = New SqlDataAdapter(cmd)
                Using dt As DataTable = New DataTable()
                    sda.Fill(dt)
                    Return dt
                End Using
            End Using
        End Using
    End Using
End Function

Protected Sub OnRowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
    If e.Row.RowType = DataControlRowType.DataRow Then
        Dim _date As String = e.Row.Cells(1).Text
        Dim dt As DateTime
        If DateTime.TryParse(_date, dt) Then
            e.Row.Cells(1).Text = dt.ToString("dd/MM/yyyy")
        ElseIf DateTime.TryParse(_date, CultureInfo.CreateSpecificCulture("en-US"), DateTimeStyles.None, dt) Then
            e.Row.Cells(1).Text = dt.ToString("dd/MM/yyyy")
        End If
    End If
End Sub

Screenshot