How to convert date time formate to mysql date format?

The first step shown in m@dhu#s answer is correct: convert the string you get from the aspxpage to a DateTime value. But then, use a parameterized query to get the data into your database! By string concatenation, you would open it for SQL injection attacks.
Do you know how such an attack works? Well, read a thread in the hall of shame: http://www.codeproject.com/Feature/WeirdAndWonderful.aspx?msg=4335687#xx4335687xx[^] (the information on the injection attack comes late - and: they haven't fixed it yet, you can try your skills...)

The Solution 01 is correct. But the standard way of doing this is using a "DateTimePicker". You can easily find it under the "Common Controls" in ToolBox. To format the date according to the given format, follow the steps given below:

1.select the "DateTimePicker"
2.press "F4" to see the properties window
3.change the property of "CustomFormat" as yyyy-MM-dd
4.change the property of "Format" as Custom


If you have not defined the relevant database field as a datetime field, don't forget to cast the output of "DateTimePicker" as it demands.

You must convert date before inserting.
You can convert it from C#
http://www.dotnetperls.com/datetime-format

OR in sql
http://www.sqlusa.com/bestpractices/datetimeconversion/

var userdateformat = DateTime.ParseExact("20120827", "yyyyMMdd", System.Globalization.CultureInfo.CurrentCulture);

Try this

DateTime dt = DateTime.ParseExact(dateString, "ddMMyyyy", CultureInfo.InvariantCulture);
dt.ToString("yyyyMMdd");

try this...
DateTime dtTimeObj = Convert.ToDateTime("9/14/2009 12:00:00 AM");
dtTimeObj.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);

Try This Friend...
DateTime dtTimeObj = Convert.ToDateTime("9/14/2009 12:00:00 AM");
dtTimeObj.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);

For SQL Convert(varchar(20), ColumnName, 20) AS ColumnSameName

I use this to import data to a datagridview in c# format the date at query and display the datetime

Then I get that information and export to a CSV - Otherwise the format will show dd/mm/yyyy HH:mm tt

Result:

yyyy-MM-dd HH:mm:ss

2014-11-21 02:03:04

check this...all formats

http://www.w3schools.com/sql/func_date_format.asp[^]