C # reading the form and saving it to the SQL database in EXCEL

A Textbox1, two buttons button1 and button2 ~ are placed on windows Forms ~ Press button1 to select an excel file ~ Processing by button2

Code Snippet
Private void button#click (object sendeer, EventArgs e)
{
OpenFileDialog openFiledialog1 = new OpenFileDialog ();
OpenFileDialg1.filter = "Excel file | *. xls ";
OpenFileDialg1.ShowDialog ();
TextBox1.Text = openFileDialog1.FileName;
}
Private void button2_click (object sender, EventArg e)
{
DataSet dt = ReadExcel (textBox1.Text );
// Then process the data you need
}