Show Database Value in DataGridView in Windows Application

Here, I will explain how to show a database value in a DataGridView.

Step 1: Form

Drag and drop a DataGridView and a Button from the Toolbox.



Step 2: Code

Now click on the button (Load Button) and write this code:

 

 

private void Load_button_Click(object sender, EventArgs e)

{

    SqlConnection con = new SqlConnection("server = MUNESH;Database=datastore;UID=sa;Password=123;");

    SqlCommand cmd = new SqlCommand("Select * from data1", con);

    try

    {

         SqlDataAdapter da = new SqlDataAdapter();

         da.SelectCommand = cmd;

         DataTable dt = new DataTable();

         da.Fill(dt);

         BindingSource bsource = new BindingSource ();

         bsource .DataSource = dt;

         dataGridView1.DataSource = bsource ;

    }

    catch (Exception ec)

    {

         MessageBox.Show(ec.Message);

    }

} 

If you don't want to load data into the DataGridView at a button click then you can make a function for filling in this DataGridView.

public void displayDataGridView()

{

    SqlConnection con = new SqlConnection("server = MUNESH;Database=datastore;UID=sa;Password=123;");

    SqlCommand cmd = new SqlCommand("Select * from data1", con);

    try

   {

        con.Open();

        SqlDataAdapter da = new SqlDataAdapter();

        da.SelectCommand = cmd;

        DataTable dt = new DataTable();

        da.Fill(dt);

        dataGridView1.DataSource = dt;

        con.Close();

    }

    catch (Exception ec)

    {

        MessageBox.Show(ec.Message);

    }

} 

Step 3: Run

Now run your application.

You can also go to my blog_munesh.