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.
Note: You can download the database table SQL by clicking the download link below.
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.
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.
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
Record after Insert in database
Downloads