How to display data from dataset

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im new to .net and how to display data in tabular format from dataset in windowform.

below code is what i have tried. but it shows nothing.

thanks in advance.

What I have tried:

C#

private void button2_Click(object sender, EventArgs e)
        {
                        SqlDataAdapter da = new SqlDataAdapter();
            DataSet ds = new DataSet();
            DataTable dt = new DataTable();

            da.SelectCommand = new SqlCommand("SELECT name,addres,number FROM people ", con);
            da.Fill(ds, "data");
            dt = ds.Tables["data"];
}

Posted 15-Mar-17 7:42am

Member 12927094

Updated 15-Mar-17 10:01am

Bryian Tan

v3

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Comments

[no name] 15-Mar-17 14:08pm

It "shows nothing" because you aren't showing the data anywhere.

Member 12927094 15-Mar-17 14:13pm

how can i show ?
can u guide me "where i do mistake?

thankyou

[no name] 15-Mar-17 14:19pm

What do you mean "how can I show?"? Like everything else in Winforms, you show data in controls. What control are you using to show the data?

Member 12927094 15-Mar-17 14:22pm

can we show in table format ?

[no name] 15-Mar-17 14:40pm

I have no idea what you think that means. Probably safe to say "yes".

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Bryian Tan · Accepted Answer · 2017-03-15T10:01:00

Based on your input, I think you want to see some data on the User Interface on button click.

1. Add a DataGridView control on to the Window form, you can leave the name dataGridView1 for now, you can change it later once you got it to work.
2. use the updated code below.

Assumption
1. The connection string is working
2. there are data in the database.

C#

private void button2_Click(object sender, EventArgs e)
{
    SqlDataAdapter da = new SqlDataAdapter();
    // DataSet ds = new DataSet();
    DataTable dt = new DataTable();
    
    da.SelectCommand = new SqlCommand("SELECT name,address,number FROM people ", con);
    da.Fill(dt);
    //  da.Fill(ds, "data");
    //  dt = ds.Tables["data"];
    
    con.Close();
    
    dataGridView1.DataSource = dt;
}

How to: Bind Data to the Windows Forms DataGridView Control[^]