In this article I will explain with an example, how to insert data into MySQL database in ASP.Net using C# and VB.Net.
 
 

Database

I have made use of the following table Customers with the schema as follows.
Insert into MySQL Database in ASP.Net
 
Note: You can download the database table SQL by clicking the download link below.
          Download SQL file
 
 

HTML Markup

The HTML Markup consists of following controls:
TextBox – For capturing Name to be inserted.
DropDownList – For selecting Country name to be inserted.
Button – For inserting the record.
The Button has been assigned with an OnClick event handler.
<table>
    <tr>
        <td>Name:</td>
        <td><asp:TextBox ID="txtName" runat="server"></asp:TextBox></td>
    </tr>
    <tr>
        <td>Country:</td>
        <td><asp:DropDownList ID="ddlCountries" runat="server">
                <asp:ListItem Text="Please select" Value=" "></asp:ListItem>
                <asp:ListItem Text="United States" Value="United States"></asp:ListItem>
                <asp:ListItem Text="India" Value="India"></asp:ListItem>
                <asp:ListItem Text="France" Value="France"></asp:ListItem>
                <asp:ListItem Text="Russia" Value="Russia"></asp:ListItem>
            </asp:DropDownList>
        </td>
    </tr>
    <tr>
        <td></td>
        <td><asp:Button ID="btnInsert" runat="server" Text="Insert" OnClick="OnInsert" /></td>
    </tr>
</table>
 
 

Namespaces

You will need to import the following namespaces.
C#
using System.Configuration;
using MySql.Data.MySqlClient;
 
VB.Net
Imports System.Configuration
Imports MySql.Data.MySqlClient
 
 

Inserting into MySQL Database in ASP.Net

When Insert button is clicked, first the connection is read from Web.Config file.
Note: For more details on how to read connection string from Web.Config file, please refer my article Read or Write Connection Strings in Web.Config file using ASP.Net using C# and VB.Net.
 
Then, a connection to the database is established using the MySqlConnection and Name and Country values fetched from TextBox and DropDownList are passed as parameter.
After that, using ExecuteScalar method the records are inserted.
Note: For more details on ExecuteScalar method, please refer my article Understanding MySqlCommand ExecuteScalar in C# and VB.Net.
 
Finally, the CustomerId of the inserted record is fetched and displayed in JavaScript Alert Message Box using RegisterStartupScript method.
C#
protected void OnInsert(object sender, EventArgs e)
{
    int customerId;
    string sql = "INSERT INTO Customers (Name, Country) VALUES (@Name, @Country);";
    sql += "SELECT LAST_INSERT_ID();";
    string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (MySqlConnection con = new MySqlConnection(constr))
    {
        using (MySqlCommand cmd = new MySqlCommand(sql, con))
        {
            cmd.Parameters.AddWithValue("@Name", txtName.Text);
            cmd.Parameters.AddWithValue("@Country", ddlCountries.SelectedItem.Text);
            con.Open();
            customerId = Convert.ToInt32(cmd.ExecuteScalar());
            con.Close();
        }
    }
 
    ClientScript.RegisterStartupScript(this.GetType(),"alert", "alert('Inserted Customer ID: " + customerId + "');",true);
}
 
VB.Net
Protected Sub OnInsert(ByVal sender As Object, ByVal e As EventArgs)
    Dim customerId As Integer
    Dim sql As String = "INSERT INTO Customers (Name, Country) VALUES (@Name, @Country);"
    sql += "SELECT LAST_INSERT_ID();"
    Dim constr As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Using con As MySqlConnection = New MySqlConnection(constr)
        Using cmd As MySqlCommand = New MySqlCommand(sql, con)
            cmd.Parameters.AddWithValue("@Name", txtName.Text)
            cmd.Parameters.AddWithValue("@Country", ddlCountries.SelectedItem.Text)
            con.Open()
            customerId = Convert.ToInt32(cmd.ExecuteScalar())
            con.Close()
        End Using
    End Using
 
    ClientScript.RegisterStartupScript(Me.[GetType](), "alert", "alert('Inserted Customer ID: " & customerId & "');", True)
End Sub
 
 

Screenshots

The Form

Insert into MySQL Database in ASP.Net
 

Record after Insert in database

Insert into MySQL Database in ASP.Net
 
 

Downloads