In this article I will explain with an example, how to Insert data into database using Stored Procedure in Windows Forms (WinForms) Application using C# and VB.Net.
 
 
Database
I have made use of the following table Customers with the schema as follows.
Insert data into Database using Stored Procedure in Windows Forms
 
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 SQL Server database table.
This Stored Procedure accepts Name and Country parameters, which are used to Insert the records in Customers Table.
CREATE PROCEDURE [Customers_InsertCustomer]
      @Name VARCHAR(100),
      @Country VARCHAR(50)
AS
BEGIN
      INSERT INTO [Customers]
                     ([Name]
                     ,[Country])
      VALUES
                     (@Name
                     ,@Country)
 
      SELECT SCOPE_IDENTITY()
END
 
 
Form Design
The following Form consists of:
Label – For labelling controls.
TextBox – For capturing Name to be inserted.
ComboBox – For capturing Country Name to be inserted.
Insert data into Database using Stored Procedure in Windows Forms
 
 
Adding ConnectionString to the App.Config file
You need to add the Connection String in the ConnectionStrings section of the App.Config file in the following way.
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <connectionStrings>
        <add name="constr" connectionString="Data Source=Mudassar-PC\SQL2019;Initial Catalog=AjaxSamples;Integrated Security=true" />
    </connectionStrings>
</configuration>
 
 
Namespace
You will need to import the following namespaces.
C#
using System.Configuration;
using System.Data.SqlClient;
 
VB.Net
Imports System.Configuration
Imports System.Data.SqlClient
 
 
Inserting record into the Database using Stored Procedure in Windows Forms
Inside the Form Load event handler, the ComboBox items are added.
When Insert button is clicked, the connection string is fetched from the App.Config file and object of SqlConnection class is created using it.
Note: For more details on how to read Connection String from App.Config file, please refer my article Read (Get) Connection String from App.Config file using C# and VB.Net.
 
Then, an object of SqlCommand class is created and the INSERT query is passed to it as parameter.
The values of the Name and Country are added as parameter to SqlCommand object.
And the connection is opened and the ExecuteScalar function is executed.
Note: For more details on how to use ExecuteScalar function, please refer Understanding SqlCommand ExecuteScalar in C# and VB.Net.
 
Finally, the TextBox and ComboBox value is set to empty and CustomerId of the inserted record is fetched and displayed in MessageBox.
C#
private void Form1_Load(object sender, EventArgs e)
{
    cbCountries.Items.Add("Please Select");
    cbCountries.Items.Add("United States");
    cbCountries.Items.Add("India");
    cbCountries.Items.Add("France");
    cbCountries.Items.Add("Russia");
}
 
private void OnInsert(object sender, EventArgs e)
{
    int customerId;
    string spName = "Customers_InsertCustomer";
    string constring = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(constring))
    {
        using (SqlCommand cmd = new SqlCommand(spName))
        {
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@Name", txtName.Text);
            cmd.Parameters.AddWithValue("@Country", cbCountries.SelectedItem);
            cmd.Connection = con;
            con.Open();
            customerId = Convert.ToInt32(cmd.ExecuteScalar());
            con.Close();
        }
    }
    txtName.Text = string.Empty;
    cbCountries.Text = string.Empty;
    MessageBox.Show("Inserted Customer ID: " + customerId);
}
 
VB.Net
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
    cbCountries.Items.Add("Please Select")
    cbCountries.Items.Add("United States")
    cbCountries.Items.Add("India")
    cbCountries.Items.Add("France")
    cbCountries.Items.Add("Russia")
End Sub
 
Private Sub OnInsert(ByVal sender As Object, ByVal e As EventArgs) Handles btnInsert.Click
    Dim customerId As Integer
    Dim spName As String = "Customers_InsertCustomer"
    Dim constring As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Using con As SqlConnection = New SqlConnection(constring)
        Using cmd As SqlCommand = New SqlCommand(spName)
            cmd.CommandType = CommandType.StoredProcedure
            cmd.Parameters.AddWithValue("@Name", txtName.Text)
            cmd.Parameters.AddWithValue("@Country", cbCountries.SelectedItem)
            cmd.Connection = con
            con.Open()
            customerId = Convert.ToInt32(cmd.ExecuteScalar())
            con.Close()
        End Using
    End Using
    txtName.Text = String.Empty
    cbCountries.Text = String.Empty
    MessageBox.Show("Inserted Customer ID: " & customerId)
End Sub
 
 
Screenshots
Insert data into Database using Stored Procedure in Windows Forms
 
Record after Insert in database
Insert data into Database using Stored Procedure in Windows Forms
 
 
Downloads
Download Code