How to convert null string to datetime

Question

3.67/5 (2 votes)

See more:

Hi,
I want to convert a null string into datetime.I am getting the string st from database. When i find st= something then it works ok. But when it returns null or empty then i m getting errors.

string st=nul;
Lavel1.Text= Convert.ToDateTime(st).ToShortDateString();

Codes are written in C#;

Thanks in advance.

Posted 23-Mar-11 20:26pm

Rasadul Alam Rashed

Updated 7-May-19 6:21am

Toniyo Jackson

v2

Add a Solution

4 solutions

Solution 3

Check the discussion Want to pass null value for Datetime[^]

Posted 23-Mar-11 20:55pm

m@dhu

Solution 2

try

C#

string str = null;
            if (str == null)
            {
                TextBox1.Text = DateTime.MinValue.ToLongDateString();
            }

Posted 23-Mar-11 20:36pm

Mahendra.p25

Comments

Prerak Patel 24-Mar-11 2:47am

Getting null from database and display it as minimum date value is not a good idea.

Mahendra.p25 24-Mar-11 2:50am

He just asked How to convert a null value into short datetime and i have answered for that.

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Prerak Patel · Accepted Answer · 2011-03-23T21:01:00

Solution 4

Can't you just use an if to check the null value?
If it is null, make your textbox blank, else put the value.

Posted 23-Mar-11 21:01pm

Prerak Patel

Micha3ldg · Accepted Answer · 2011-03-23T23:05:00

Solution 5

This might help, use the tryparse function of DateTime class

C#

string st = null;
DateTime dateTime;

if (string.IsNullOrEmpty(st))
    Lavel1.Text = string.Empty;
else if( DateTime.TryParse( st , out dateTime))
{
    Lavel1.Text = dateTime.ToShortDateString();
}

Posted 23-Mar-11 23:05pm

Micha3ldg