error with date time converting

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HI there, i want to update the date value in my db table. it is a type date field.
In my form I use a datetime picker called dtpRecallDate for choosing the date and another one called dtpRecallTime for choosing the time.
The code i am using is the following:

C#

DateTime dtime;
string RecallDateTime = "";

if (dtpRecallDate.Value.ToString() != "" && dtpRecallTime.Value.ToString() != "")
{
    RecallDateTime = (dtpRecallDate.Value.ToString("s") + " " + dtpRecallTime.Value.ToString("s"));

}
DateTime.TryParse(RecallDateTime, out dtime);
MerchantData1["RecallDate"] = dtime.ToString();
DataConnection.UpdateRow("MerchantCalls", MerchantData1, " WHERE  MerchantCallID = " + _merchcallid + " ");

When i press the enter button i get the following message:

"syntax error converting datetime from character string"

I know it's probably something very simple but i have already waisted one hour trying to solve it!!!
Any help will be much appreciated.
Thnx in advance!

Posted 10-Feb-12 3:13am

jim haras

Updated 10-Feb-12 3:15am

v2

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2 solutions

Solution 2

If you use breakpoint and check the following code here,

C#

RecallDateTime = (dtpRecallDate.Value.ToString("s") + " " + dtpRecallTime.Value.ToString("s"));

RecallDateTime will have value of say 9 9 when the time is 9 seconds. or say
23 59 when seconds in dtpRecallDate is 23 seconds, and time in dtpRecallTime is 59 seconds.

This is not a valid datetime format.

Posted 10-Feb-12 8:11am

Praveen Kullu

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Christian Graus · Accepted Answer · 2012-02-10T03:20:00

Read your code. Use the debugger to step through it. Learn how to use your tools.

RecallDateTime is "" if the two values are the same. Otherwise, it's two dates joined together. It's never one date, so parsing will never work. Also, when you call tryparse, it returns true or false, if you ignore that return value, you're writing bad code. The system told you it could not parse the string and you ignored it.