In this article I will explain with an example, how to select the data from database with Stored Procedure using Dapper library in Windows Forms (WinForms) Application 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.
Select with Stored Procedure using Dapper in C# and VB.Net
 
I have already inserted few records in the table.
Select with Stored Procedure using Dapper in C# and VB.Net
 
Note: You can download the database table SQL by clicking the download link below.
          Download SQL file
 
 

Stored Procedure

The following Stored Procedure is used to display the records from SQL Server database.
CREATE PROCEDURE [Customers_GetCustomers]
AS
BEGIN
    SET NOCOUNT ON;
    SELECT [CustomerId]
          ,[Name]
          ,[Country]
    FROM [Customers]
END
 
 

Form Design

The following form consists of:
DataGridView – For displaying data.
Select with Stored Procedure using Dapper in C# and VB.Net
 
 

Namespaces

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

Selecting with Stored Procedure using Dapper in Windows Forms

Inside the Form Load event handler, first the connection is read from App.Config file.
Note: For more details on how to read connection string from App.Config file, please refer my article .Net 4.5: Read (Get) Connection String from App.Config file using C# and VB.Net.
 
The records are fetched from the Customers Table of SQL Server database with Stored Procedure using ExecuteReader method of Dapper class and copied to DataTable object using Load method.
Finally, DataTable is assigned to the DataSource property of DataGridView.
C#
private void Form1_Load(object sender, EventArgs e)
{           
    string spName = "Customers_GetCustomers";
    string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(constr))
    {
        using (IDataReader sdr = con.ExecuteReader(spName, commandType: CommandType.StoredProcedure))
        {
            using (DataTable dtCustomers = new DataTable())
            {
                dtCustomers.Load(sdr);
                dgvCustomers.DataSource = dtCustomers;
            }
        }
    }
}
 
VB.Net
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles Me.Load
    Dim spName As String = "Customers_GetCustomers"
    Dim constr As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Using con As SqlConnection = New SqlConnection(constr)
        Using sdr As IDataReader = con.ExecuteReader(spName, commandType:=CommandType.StoredProcedure)
            Using dtCustomers As DataTable = New DataTable()
                dtCustomers.Load(sdr)
                dgvCustomers.DataSource = dtCustomers
            End Using
        End Using
    End Using
End Sub
 
 

Screenshot

Select with Stored Procedure using Dapper in C# and VB.Net
 
 

Downloads

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