Validate fields on form before submitting data into database.

Hi Kishor,

You may try this.

Take ErrorProvider Control. And Use following code.

private void btnSave_Click(object sender, EventArgs e)
        {
            ErrorTracker et = new ErrorTracker(errorProvider1);

            if (TextBox1.Text.Trim() == "")
            {
                et.SetError(TextBox1, "Required !");
            }
            if (TextBox2.Text.Trim() == "")
            {
                et.SetError(TextBox2, "Required !");
            }
            if (TextBox3.Text.Trim() == "")
            {
                et.SetError(TextBox3, "Required !");
            }
            if (TextBox4.Text.Trim() == "")
            {
                et.SetError(TextBox4, "Required !");
            }
            int a = et.Count;
            if (!(a > 0))
            {
                errorProvider1.Clear();
                this.SavePatientMessage();
            }         
        }

Hope this will help you.

if you are using winforms then try this.

private void button1_Click(object sender, EventArgs e)
        {
            foreach (Control cnt in this.Controls)
            {
                if (cnt is TextBox)
                {
                    if (cnt.Text == "")
                    {
                        MessageBox.Show("TextBox is Blank.");
                        cnt.BackColor = Color.Pink;
                    }
                }
                else if (cnt is ComboBox)
                {
                    ComboBox cmb = (ComboBox)cnt;
                    if (cmb.SelectedItem == null)
                    {
                        MessageBox.Show("Combox is not Selected.");
                        cnt.BackColor = Color.Plum;
                    }
                }
            }
        }

Hi Kishor,

It is a window or web apps.


If window then,


Try...


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication21
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (textBox1.Text == "" || textBox2.Text == "" || textBox3.Text == "" || textBox4.Text == "" || textBox5.Text == "" || textBox6.Text == "" || textBox7.Text == "" || textBox8.Text == "" || comboBox1.Text == "" || comboBox2.Text == "" || comboBox3.Text == "" || comboBox4.Text == "")
            {
                MessageBox.Show("Fields cannnot be blank");
            }
            else
            {
                MessageBox.Show("Insert");
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            comboBox1.Items.Add("a");
            comboBox2.Items.Add("b");
            comboBox3.Items.Add("c");
            comboBox4.Items.Add("d");
        }
    }
}




Thanks
If this post helps you mark it as answer

Use requiredFieldValidator for each textboxes.
Like


 
         ControlToValidate="TextBox2" ErrorMessage="Field cant be empty">
         ControlToValidate="txt1" ErrorMessage="Field cant be empty">