In this article I will explain with an example, how to select data from
MySQL database with
Stored Procedure using
Dapper library in ASP.Net using C# and VB.Net.
Installing Dapper package using Nuget
Database
I have made use of the following table Customers with the schema as follows.
I have already inserted few records in the table.
Note: You can download the database table SQL by clicking the download link below.
Stored Procedure
DELIMITER //
CREATE PROCEDURE Customers_GetCustomers()
BEGIN
SELECT CustomerId, Name,Country
FROM Customers
END//
DELIMITER ;
HTML Markup
The HTML Markup consists of following control:
GridView – For displaying data.
The GridView consists of three BoundField columns.
<asp:GridView ID="gvCustomers" runat="server" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="CustomerId" HeaderText="Customer Id" />
<asp:BoundField DataField="Name" HeaderText="Name" />
<asp:BoundField DataField="Country" HeaderText="Country" />
</Columns>
</asp:GridView>
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
Selecting with Stored Procedure using Dapper from MySQL Database in ASP.Net
Inside the Page Load event handler, first the connection is read from Web.Config file.
Then, a connection to the database is established using the MySqlConnection class.
Then, using
ExecuteReader method of
Dapper library, the records are fetched from the
Customers Table and copied to
DataTable object using
Load method.
Finally, the DataTable is assigned to the DataSource property of GridView and DataBind method is called.
C#
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
string spName = "Customers_GetCustomers";
string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
using (MySqlConnection con = new MySqlConnection(constr))
{
using (IDataReader sdr = con.ExecuteReader(spName, commandType: CommandType.StoredProcedure))
{
using (DataTable dtCustomers = new DataTable())
{
dtCustomers.Load(sdr);
gvCustomers.DataSource = dtCustomers;
gvCustomers.DataBind();
}
}
}
}
}
VB.Net
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
If Not Me.IsPostBack Then
Dim spName As String = "Customers_GetCustomers"
Dim constr As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
Using con As MySqlConnection = New MySqlConnection(constr)
Using sdr As IDataReader = con.ExecuteReader(spName, commandType:=CommandType.StoredProcedure)
Using dtCustomers As DataTable = New DataTable()
dtCustomers.Load(sdr)
gvCustomers.DataSource = dtCustomers
gvCustomers.DataBind()
End Using
End Using
End Using
End If
End Sub
Screenshot
Downloads