This way
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Name" />
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Eval("Type").ToString() == "1" ? "User" : "Admin" %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[2] { new DataColumn("Name"), new DataColumn("Type") });
dt.Rows.Add("John", 0);
dt.Rows.Add("Rick", 1);
dt.Rows.Add("Andrew", 1);
dt.Rows.Add("Peter", 0);
GridView1.DataSource = dt;
GridView1.DataBind();
}
}