Show Hide ASP.Net GridView CommandField Buttons based on user role using C# and VB.Net

Dear Kankon, 

Kindly refer below sample.

Database

I have made use of the following table Customers with the schema as follows.

I have already inserted few records in the table.

You can download the database table SQL by clicking the download link below.

Download SQL file

HTML

<asp:GridView runat="server" ID="gvCustomers" AutoGenerateColumns="false" OnRowDataBound="OnRowDataBound" OnRowEditing="OnRowEditing" >
    <Columns>
        <asp:BoundField DataField="CustomerId" HeaderText="ID" ReadOnly="true" />
        <asp:BoundField DataField="Name" HeaderText="Name" />
        <asp:BoundField DataField="Country" HeaderText="Country" />
        <asp:CommandField ButtonType="Link" ShowEditButton="true" ShowDeleteButton="true" HeaderText="Action" ></asp:CommandField>
    </Columns>
</asp:GridView>

Namespaces

C#

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

VB.Net

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

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        this.BindGrid();
    }
}

protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        LinkButton edit = e.Row.Cells[3].Controls[0] as LinkButton;
        LinkButton delete = e.Row.Cells[3].Controls[2] as LinkButton;
        if (this.Page.User.IsInRole("Administrator"))
        {
            edit.Visible = true;
            delete.Visible = true;
        }
        else
        {
            edit.Visible = true;
            delete.Visible = false;
        }
    }
}

private void BindGrid()
{
    string conn = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(conn))
    {
        using (SqlCommand cmd = new SqlCommand("SELECT CustomerId, Name, Country FROM Customers", con))
        {
            using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
            {
                using (DataTable dt = new DataTable())
                {
                    sda.Fill(dt);
                    gvCustomers.DataSource = dt;
                    gvCustomers.DataBind();
                }
            }
        }
    }
}

protected void OnRowEditing (object sender, GridViewEditEventArgs e)
{
    gvCustomers.EditIndex = e.NewEditIndex;
    this.BindGrid();
}

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

Protected Sub OnRowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs) 
    If e.Row.RowType = DataControlRowType.DataRow Then
        Dim edit As LinkButton = TryCast(e.Row.Cells(3).Controls(0), LinkButton)
        Dim delete As LinkButton = TryCast(e.Row.Cells(3).Controls(2), LinkButton)

        If Me.Page.User.IsInRole("Administrator") Then
            edit.Visible = True
            delete.Visible = True
        Else
            edit.Visible = True
            delete.Visible = False
        End If
    End If
End Sub

Private Sub BindGrid()
    Dim conn As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Using con As SqlConnection = New SqlConnection(conn)
        Using cmd As SqlCommand = New SqlCommand("SELECT CustomerId, Name, Country FROM Customers", con)
            Using sda As SqlDataAdapter = New SqlDataAdapter(cmd)
                Using dt As DataTable = New DataTable()
                    sda.Fill(dt)
                    gvCustomers.DataSource = dt
                    gvCustomers.DataBind()
                End Using
            End Using
        End Using
    End Using
End Sub

Protected Sub OnRowEditing(ByVal sender As Object, ByVal e As GridViewEditEventArgs)
    gvCustomers.EditIndex = e.NewEditIndex
    Me.BindGrid()
End Sub

Screenshot