Validating the Datetimepicker in winForms

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Hello, I am sorry for posting this question as it may be find silly to all, but I am not getting the exact solution. The question is I have a Date time picker in my project, it comes after the 3 textboxes in the form, if there is no text is entered in the textbox and enter on submit, it gives a message(validation) that data to be entered, in the same way, if the date is not selected, it should proceed further. What is the code to do that, the code whcih worked for other textboxes and not working for dateimepicker control is:

C#

if (dateInsert.Value.ToString() = string.Empty)
           {
               MessageBox.Show("Please select date!");
               txtDescription.Focus();
               return;
           }

Posted 11-Sep-13 0:15am

karthik reddy mereddy

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[no name] 11-Sep-13 6:25am

At the very least you are missing an =. if (dateInsert.Value.ToString() == string.Empty)
Other than that, I would have no idea what "not working" means.

karthik reddy mereddy 11-Sep-13 6:36am

I am sorry for the typo, I am using if (dateInsert.Value.ToString() == string.Empty).
When the page is loading it is coming with the todays date in datetimepicker control. What requieremnt is, I should definitely click or change the date to previous on the datetimepicker control in order to submit.

[no name] 11-Sep-13 7:27am

Okay so set the date picker to the previous date. What is the problem there? What does that have to do with anything in your posting?

Love 2 code 11-Sep-13 6:25am

Hi, the out of the box DateTimePicker control does not allow null values, so you could google for a nullable DateTimePicker control.

3 solutions

Solution 3

U mean to say every time user have to change the default date ?

Posted 11-Sep-13 23:41pm

murkalkiran

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Maciej Los · Accepted Answer · 2013-09-11T10:30:00

Have a look here: DateTimePicker.Value[^] property, which gets or sets the date/time value assigned to the control.

If you would like to check if the value of DateTimePicker has a proper datetime value, please, use DateTime.TryParse[^] method.

C#

DateTime dtValue = DateTime.Now();
bool bres = DateTime.TryParse(dateInsert.Value.ToString(), dtValue);

if (bres==true) 
//proper date
else
//unable to convert!

More:
Parsing Date and Time Strings[^]

murkalkiran · Accepted Answer · 2013-09-11T19:10:00

C#

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

namespace WindowsApplication12
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            dateTimePicker1.CustomFormat = " ";
            dateTimePicker1.Format = DateTimePickerFormat.Custom;
        }

        private void dateTimePicker1_MouseEnter(object sender, EventArgs e)
        {
            dateTimePicker1.Format = DateTimePickerFormat.Short;
        }
    }
}

Validating the Datetimepicker in winForms

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