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

Installing Dapper package using Nuget

In order to install Dapper library using Nuget, please refer my article Install Dapper from Nuget in Visual Studio.
 
 

Database

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

Stored Procedure

The following Stored Procedure will be used to Insert data into the MySQL database table.
This Stored Procedure accepts Name and Country parameters, which are used to Insert the records in Customers Table.
DELIMITER //
CREATE PROCEDURE Customers_InsertCustomer(
    IN Name VARCHAR(100),
    IN Country VARCHAR(50)
)
BEGIN
    INSERT INTO Customers(Name, Country)
    VALUES(Name, Country);
    SELECT LAST_INSERT_ID()
END//
DELIMITER ;
 
 

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 Dapper;
using System.Data;
using System.Configuration;
using MySql.Data.MySqlClient;
 
VB.Net
Imports Dapper
Imports System.Data
Imports System.Configuration
Imports MySql.Data.MySqlClient
 
 

Inserting with Stored Procedure using Dapper from 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, the name of the Stored Procedure and an object with Name and Country values are passed to the ExecuteScalar method of the Dapper library which then inserts the record in the Customers Table.
Note: For more details on how to use ExecuteScalar, please refer my article Understanding Dapper ExecuteScalar in MySQL in C# and VB.Net.
 
Finally, the CustomerId of the inserted record is fetched and displayed in JavaScript Alert Message Box using RegisterStartupScript method and TextBox, DropDownList is set as empty.
C#
protected void OnInsert(object sender, EventArgs e)
{
    int customerId;
    string spName = "Customers_InsertCustomer";
    string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (MySqlConnection con = new MySqlConnection(constr))
    {
        string name = txtName.Text;
        string country = ddlCountries.SelectedValue;
        customerId = Convert.ToInt32(con.ExecuteScalar(spName, new { name, country }, commandType: CommandType.StoredProcedure));
    }
    ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Inserted Customer ID: " + customerId + "');", true);
 
    txtName.Text = string.Empty;
    ddlCountries.SelectedValue = string.Empty;
}
 
VB.Net
Protected Sub OnInsert(sender As Object, e As EventArgs)
    Dim customerId As Integer
    Dim spName As String = "Customers_InsertCustomer"
    Dim constr As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Using con As MySqlConnection = New MySqlConnection(constr)
        Dim name As String = txtName.Text
        Dim country As String = ddlCountries.SelectedValue
        customerId = Convert.ToInt32(con.ExecuteScalar(spName, New With {name, country}, commandType:=CommandType.StoredProcedure))
    End Using
    ClientScript.RegisterStartupScript(Me.GetType(), "alert", "alert('Inserted Customer ID: " & customerId & "');", True)
 
    txtName.Text = String.Empty
    ddlCountries.SelectedValue = String.Empty
End Sub
 
 

Screenshots

The Form

Insert with Stored Procedure using Dapper from MySQL Database in ASP.Net
 

Record after Insert in database

Insert with Stored Procedure using Dapper from MySQL Database in ASP.Net
 
 

Downloads

Download Code