How to use Total in TextBox in two TextBoxes in C#.
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Data.SqlClient; namespace WindowsApplication10 { public partial class Form1 : Form { SqlConnection con = new SqlConnection(); DataTable dt; DataRow dr; public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { // TODO: This line of code loads data into the 'tRAILDataSet.CAL_TABLE' table. You can move, or remove it, as needed. this.cAL_TABLETableAdapter.Fill(this.tRAILDataSet.CAL_TABLE); textBox1.Enabled = false; textBox2.Enabled = false; textBox3.Enabled = false; btnSave.Enabled = false; } private void btnAdd_Click(object sender, EventArgs e) { btnSave.Enabled = true; textBox1.Enabled = true; textBox2.Enabled = true; textBox3.Enabled = true; textBox1.Text = ""; textBox2.Text = ""; textBox3.Text = ""; btnAdd.Enabled = false; } private void btnSave_Click(object sender, EventArgs e) { int a = Convert.ToInt32(textBox1.Text); int k = Convert.ToInt32(textBox2.Text); int uItem1Tot = a + k; textBox3.Text = uItem1Tot.ToString(); dt = tRAILDataSet.Tables["CAL_TABLE"]; dr = dt.NewRow(); dr[0] = textBox1.Text; dr[1] = textBox2.Text; dr[2] = textBox3.Text; dt.Rows.Add(dr); cAL_TABLETableAdapter.Update(tRAILDataSet.CAL_TABLE); textBox1.Enabled = false; textBox2.Enabled = false; textBox3.Enabled = false; btnAdd.Enabled = true; btnSave.Enabled = false; } } }
DateTime in C#