Validation part

Hi Muthukumar

I am using WinForms and I know there is no border to color, but I hope my response gives you some inspiration and ideas for a solution for your application, because the concept is the same. Instead of a border I’m using the BackColor of the TextBox.

Images of runtime application:

Application Code: WinForms C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Sandbox2
{
public partial class MyMainForm : Form
{
string m_proposedPassword = string.Empty;
public MyMainForm()
{
InitializeComponent();
}
private void txtProposedPassword_Leave(object sender, EventArgs e)
{
m_proposedPassword = txtProposedPassword.Text.Trim();
}
private System.Drawing.Color GetConfirmPasswordTextBoxColorState()
{
// Method: GetConfirmPasswordTextBoxColorState
// Return: System.Drawing.Color
// returns a color based on varying runtime conditions in the applications
System.Drawing.Color result = SystemColors.Window;
// Runtime conditions causing change of state
// the value in txtProposedPassword does not match
// the value in txtConfirmPassword
string confirmText = txtConfirmPassword.Text.Trim();
Boolean condition1 = (confirmText != m_proposedPassword);
if(condition1==true)
{
result = Color.Pink;
}
return result;
}
private Boolean GetOKButtonEnabledState()
{
// Method: GetOKButtonEnabledState
// Return: Boolean
// returns a boolean based on varying runtime conditions in the application
// Default value is always false
Boolean result = false; ;
// Support Variables
string confirmText = txtConfirmPassword.Text.Trim();
// conditions for true
// condition1: there must be a string length greater than 0 in txtProposedPassword
Boolean condition1 = (m_proposedPassword.Length>0);
// condition2: there must a string length greater than 0 in txtConfirmPassword
Boolean condition2 = (confirmText.Length > 0);
// condition3: the value in txtProposedPassword does match the value in txtConfirmPassword
Boolean condition3 = (confirmText == m_proposedPassword);
// List additional conditions here...
// Boolean condition4 = (Expression);
// get the overall state
result = (condition1 == true) && (condition2 == true) && (condition3 == true);
return result;
}
private void txtConfirmPassword_TextChanged(object sender, EventArgs e)
{
txtConfirmPassword.BackColor = GetConfirmPasswordTextBoxColorState();
btnOK.Enabled = GetOKButtonEnabledState();
}
private void MyMainForm_Load(object sender, EventArgs e)
{
txtConfirmPassword.BackColor = GetConfirmPasswordTextBoxColorState();
btnOK.Enabled = GetOKButtonEnabledState();
}
}
}

Have a great day!

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

James Axsom8y ago
Hi Muthukumar

I am using WinForms and I know there is no border to color, but I hope my response gives you some inspiration and ideas for a solution for your application, because the concept is the same. Instead of a border I’m using the BackColor of the TextBox.

Images of runtime application:

Application Code: WinForms C#
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Sandbox2
{
    public partial class MyMainForm : Form
    {
        string m_proposedPassword = string.Empty;

        public MyMainForm()
        {
            InitializeComponent();
        }

        private void txtProposedPassword_Leave(object sender, EventArgs e)
        {
            m_proposedPassword = txtProposedPassword.Text.Trim();
        }

        private System.Drawing.Color GetConfirmPasswordTextBoxColorState()
        {
            // Method: GetConfirmPasswordTextBoxColorState
            // Return: System.Drawing.Color
            // returns a color based on varying runtime conditions in the applications

            System.Drawing.Color result = SystemColors.Window;

            // Runtime conditions causing change of state
            // the value in txtProposedPassword does not match
            // the value in txtConfirmPassword
            string confirmText = txtConfirmPassword.Text.Trim();

            Boolean condition1 = (confirmText != m_proposedPassword);

            if(condition1==true)
            {
                result = Color.Pink;
            }

            return result;
        }

        private Boolean GetOKButtonEnabledState()
        {
            // Method: GetOKButtonEnabledState
            // Return: Boolean
            // returns a boolean based on varying runtime conditions in the application

            // Default value is always false
            Boolean result = false; ;
            // Support Variables
            string confirmText = txtConfirmPassword.Text.Trim();

            // conditions for true

            // condition1: there must be a string length greater than 0 in txtProposedPassword
            Boolean condition1 = (m_proposedPassword.Length>0);
            // condition2: there must a string length greater than 0 in txtConfirmPassword
            Boolean condition2 = (confirmText.Length > 0);
            // condition3: the value in txtProposedPassword does match the value in txtConfirmPassword
            Boolean condition3 = (confirmText == m_proposedPassword);
            // List additional conditions here...
            // Boolean condition4 = (Expression);

            // get the overall state
            result = (condition1 == true) && (condition2 == true) && (condition3 == true);

            return result;
        }

        private void txtConfirmPassword_TextChanged(object sender, EventArgs e)
        {
            txtConfirmPassword.BackColor = GetConfirmPasswordTextBoxColorState();
            btnOK.Enabled = GetOKButtonEnabledState();
        }

        private void MyMainForm_Load(object sender, EventArgs e)
        {
            txtConfirmPassword.BackColor = GetConfirmPasswordTextBoxColorState();
            btnOK.Enabled = GetOKButtonEnabledState();
        }
    }
}
Have a great day!
+1