How do I validate textboxes in a datasource, windows form c#

Question

What is the easiest way to validate textboxes that need to be checked before they go through. I have 2 tables I have to insert my data into as well and that's just for one group, in total I have 3 groups but just a helpful tip towards the one will be fine.

It needs to be checked before it runs so how would I do it before the try/catch block and still just use the one button click.

I have the main table which is 'Person' and then 3 sub tables; 'Student', 'Teacher', 'Administration'.

Not all the textboxes need to be validated. sAdd2.Text and StudentType.Text.

My normal code is

private void sNew_Click(object sender, EventArgs e)
        {
            try
            {
                personTableAdapter.Insert(sFirstName.Text, sSurname.Text, 
                Convert.ToDateTime(sDoB.Text), sPhone.Text, sAdd1.Text, sAdd2.Text,
                sSuburb.Text, sState.Text, sPostcode.Text, StudentType.Text);
                
                studentTableAdapter.Insert(Convert.ToInt32(sSID.Text), 
                Convert.ToDateTime(sSDate.Text), sQCode.Text);
                
                MessageBox.Show(sFirstName.Text + " " + sSurname.Text + " has been added");
                
                this.personTableAdapter.Fill(this._30002195DataSet.Person);
                this.studentTableAdapter.Fill(this._30002195DataSet.Student);
                this.Hide();
                Admin f1 = new Admin();
                f1.Show();
            }
           catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

I have tried to use errorProvider and it doesn't stop to check, it just runs and checks and still submits into the database.