DateDiff method use in C#

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Hello All

am running the below C# code.........and facing an error....

C#

if ((DateDiff("d", rs["Date"], DateTime.Now) < 0 & billing_total_today_flag == false))
                {
                    billing_total_today = billing_total;
                    billing_total_today_flag = true;
                }

Error:
if ((DateDiff("d", rs["Date"], DateTime.Now) < 0 & billing_total_today_flag == false))
Error Name:
The name 'DateDiff' does not exists in current context.

You all are requested to help me to sort it out...

Thanks

Posted 15-Jun-15 0:01am

Ranju_test

Updated 15-Jun-15 0:10am

Andy Lanng

v3

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Tomas Takac 15-Jun-15 6:13am

This is your third question re DateDiff in C#. You even accepted on of the previous solutions. So would you care to explain what's different this time? Otherwise it's a clear re-post.

3 solutions

Solution 2

DateDiff as you are trying to use it is a SQL function. In c# you subtract the dates of interest to get a TimeSpan object, and that TimeSpan lets you know the difference in days

https://msdn.microsoft.com/en-us/library/system.timespan(v=vs.110).aspx[^]

Posted 15-Jun-15 0:18am

F-ES Sitecore

Comments

Ranju_test 15-Jun-15 6:25am

Can you please suggest how this TimeSpan could be used

F-ES Sitecore 15-Jun-15 6:46am

Click the link and there are examples at the bottom of the page.

Solution 1

The answer is the same as in your question Use of WriteHtmlResponse method in C# from VB[^]

DateDiff is not a system function in .Net

You will have to write this function in c# too.

Please accept the solutions once you are satisfied with the answer

Posted 15-Jun-15 0:12am

Andy Lanng

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sasanka sekhar panda · Accepted Answer · 2015-06-15T00:28:00

Solution 3

C#

//corrected code
if ((Convert.ToDateTime("rs["Date"]") - DateTime.Now).Days < 0 & billing_total_today_flag == false))
                {
                    billing_total_today = billing_total;
                    billing_total_today_flag = true;
                }

Posted 15-Jun-15 0:28am

sasanka sekhar panda

Updated 15-Jun-15 0:29am