private void button2_Click(object sender, EventArgs e)
{
string Fname, Lname, contact;
double gpa;
Fname = textBox2.Text;
Lname = textBox3.Text;
contact = textBox5.Text;
gpa = Convert.ToDouble(textBox4.Text);
try
{
Sql_Db_Connection connection = new Sql_Db_Connection(); // my db class
string query = "DELETE FROM crud_table WHERE ID = '" + textBox1.Text + "' ";
if (connection.insert_query(query))
{
MessageBox.Show("Data Deleted Successfully");
}
else
{
MessageBox.Show("Data could not be deleted");
}
}
catch (Exception Ex)
{
MessageBox.Show(Ex.Message);
}
}
private void button2_Click(object sender, EventArgs e)
{
string id = textBox1.Text;
string query = "SELECT * FROM crud_table Where ID=" + id;
Sql_Db_Connection sql_Db = new Sql_Db_Connection();
sql_Db.command = new SqlCommand(query, sql_Db.connection);
try {
sql_Db.dr = sql_Db.command.ExecuteReader();
if (sql_Db.dr.Read())
{
textBox2.Text = (sql_Db.dr["Fname"].ToString());
textBox3.Text = (sql_Db.dr["Lname"].ToString());
textBox4.Text = (sql_Db.dr["GPA"].ToString());
textBox5.Text = (sql_Db.dr["Contact"].ToString());
MessageBox.Show("User found");
}
else
{
MessageBox.Show("User not Found");
}
}
catch (Exception Ex) {
MessageBox.Show(Ex.Message);
}
}
private void button1_Click(object sender, EventArgs e)
{
Sql_Db_Connection sql_Db = new Sql_Db_Connection();
string query = "SELECT * FROM crud_table";
BindingSource bindingSource = sql_Db.Select_Query(query);
dataGridView1.DataSource = bindingSource;
}
private void button1_Click(object sender, EventArgs e)
{
string Id, Fname, Lname, contact;
double gpa;
Id = textBox5.Text;
Fname = textBox4.Text;
Lname = textBox3.Text;
contact = textBox1.Text;
gpa = Convert.ToDouble(textBox2.Text);
Sql_Db_Connection connection = new Sql_Db_Connection(); // my db class
string query = "INSERT INTO Crud_Table VALUES('" + Id + "','" + Fname + "','" + Lname + "','" + gpa + "','" +
contact + "') ";
if (connection.insert_query(query))
{
MessageBox.Show("Data Inserted Successfully");
}
}
private void button1_Click(object sender, EventArgs e)
{
string Fname, Lname, contact;
double gpa;
Fname = textBox2.Text;
Lname = textBox3.Text;
contact = textBox5.Text;
gpa = Convert.ToDouble(textBox4.Text);
try
{
Sql_Db_Connection connection = new Sql_Db_Connection(); // my db class
string query = "UPDATE crud_table SET Fname='" + Fname + "' , Lname = '" + Lname + "' , GPA = '" + gpa + "' , Contact ='" + contact + "' WHERE ID = '" + textBox1.Text + "' ";
MessageBox.Show(query);
if (connection.insert_query(query))
{
MessageBox.Show("Data Updated Successfully");
}
}
catch (Exception Ex)
{
MessageBox.Show(Ex.Message);
}
}
