private void btntienhoanlai_Click(object sender, EventArgs e)
{
cltamung cl = new cltamung();
float tientamung, tienphaitra;
float kq = 0;
tientamung = cl.chuyensangso(txttientamung.Text);
tienphaitra = cl.chuyensangso(txttienphaitra.Text);
kq = cl.tinhtienhoanlai(tientamung, tienphaitra);
txttienhoanlai.Text = cl.chuyensangchuoi(kq);
strsql = "update tbtamung set tongtienhoanlai='" + txttienhoanlai.Text + "' where mabn='" + cbomabn.Text + "'";
objcmd = new SqlCommand(strsql, objcon);
objcmd.ExecuteNonQuery();
Hienthi();
}
private void btntienhoanlai_Click(object sender, EventArgs e)
{
cltamung cl = new cltamung();
float tientamung, tienphaitra;
float kq = 0;
tientamung = cl.chuyensangso(txttientamung.Text);
tienphaitra = cl.chuyensangso(txttienphaitra.Text);
kq = cl.tinhtienhoanlai(tientamung,tienphaitra);
txttienhoanlai.Text = cl.chuyensangchuoi(kq);
strsql = "update tbtamung set tongtienhoanlai='" + txttienhoanlai.Text + "' where mabn='" + cbomabn.Text + "'";
objcmd = new SqlCommand(strsql, objcon);
objcmd.ExecuteNonQuery();
Hienthi();
}