private void button1_Click(object sender, EventArgs e) { string a = Convert.ToString(textBox1.Text); string b = Convert.ToString(textBox2.Text); string queryString = "SELECT * FROM [User]"; string connectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Users\Vladislav\Documents\kursach1.mdb"; OleDbConnection myOleDbConnection = new OleDbConnection(connectionString); OleDbCommand myOleDbCommand = new OleDbCommand(queryString, myOleDbConnection); myOleDbConnection.Open(); OleDbDataReader myOleDbDataReader = myOleDbCommand.ExecuteReader(); while (myOleDbDataReader.Read()) { if (myOleDbDataReader.GetString(0) == a && myOleDbDataReader.GetString(1) == b) { Form4 form4 = new Form4(); form4.Visible = true; this.Visible = false; break; } } myOleDbDataReader.Close(); myOleDbConnection.Close(); }
private void pictureBox1_Click(object sender, EventArgs e) { Form4 form4 = new Form4(); form4.ShowDialog(); }