Set ASP.Net RadioButtonList CheckBoxList and DropDownList value from Database using C# and VB.Net

Hi v@run,

Please refer below sample.

HTML

<asp:DropDownList runat="server" ID="ddlName">
</asp:DropDownList>
<asp:RadioButtonList runat="server" ID="rblId">
</asp:RadioButtonList>
<asp:CheckBoxList runat="server" ID="chkCountry">
</asp:CheckBoxList>

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)
    {
        string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
        using (SqlConnection con = new SqlConnection(constr))
        {
            using (SqlCommand cmd = new SqlCommand("SELECT * FROM Customers", con))
            {
                using (SqlDataAdapter da = new SqlDataAdapter(cmd))
                {
                    DataTable dt = new DataTable();
                    da.Fill(dt);
                    ddlName.DataSource = dt;
                    ddlName.DataTextField = "Name";
                    ddlName.DataValueField = "Name";
                    ddlName.DataBind();
                    ddlName.Items.FindByText(dt.Rows[0]["Name"].ToString()).Selected = true;

                    rblId.DataSource = dt;
                    rblId.DataTextField = "CustomerId";
                    rblId.DataValueField = "CustomerId";
                    rblId.DataBind();
                    rblId.Items.FindByText(dt.Rows[0]["CustomerId"].ToString()).Selected = true;

                    chkCountry.DataSource = dt;
                    chkCountry.DataTextField = "Country";
                    chkCountry.DataValueField = "Country";
                    chkCountry.DataBind();
                    chkCountry.Items.FindByText(dt.Rows[0]["Country"].ToString()).Selected = true;
                }
            }
        }
    }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim constr As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
        Using con As SqlConnection = New SqlConnection(constr)
            Using cmd As SqlCommand = New SqlCommand("SELECT * FROM Customers", con)
                Using da As SqlDataAdapter = New SqlDataAdapter(cmd)
                    Dim dt As DataTable = New DataTable()
                    da.Fill(dt)
                    ddlName.DataSource = dt
                    ddlName.DataTextField = "Name"
                    ddlName.DataValueField = "Name"
                    ddlName.DataBind()
                    ddlName.Items.FindByText(dt.Rows(0)("Name").ToString()).Selected = True

                    rblId.DataSource = dt
                    rblId.DataTextField = "CustomerId"
                    rblId.DataValueField = "CustomerId"
                    rblId.DataBind()
                    rblId.Items.FindByText(dt.Rows(0)("CustomerId").ToString()).Selected = True

                    chkCountry.DataSource = dt
                    chkCountry.DataTextField = "Country"
                    chkCountry.DataValueField = "Country"
                    chkCountry.DataBind()
                    chkCountry.Items.FindByText(dt.Rows(0)("Country").ToString()).Selected = True
                End Using
            End Using
        End Using
    End If
End Sub

Screenshot