12,753,089 members (39,208 online)
Rate this:
See more:
i have to convert datediff of start_time and end_time into hours.I have convert this diff into minute.this will work, but i have to convert it into hours.how to do this ?
below code that i have used to convert it into minute.
```
SqlCommand cmd0 = new SqlCommand("select *,Datediff(mi,start_date,end_date) as Duration,Datediff(h,start_date,end_date) from project_log  where (end_date between '" + txt_datefrom.Text + "' and '" + txt_dateto.Text + "' or start_date between '" + txt_datefrom.Text + "' and '" + txt_dateto.Text + "') and " + ddlsearchby.SelectedValue + " LIKE '" + txt_searchText.Text + "%'", cnn);
```
Posted 19-Jan-13 1:57am

Rate this:

## Solution 1

Use HH to have difference in Hours.

```DATEDIFF(HH,start_date, end_date) as Hour
```
Rate this:

## Solution 2

HI,

you can use like the following:

```DateTime a = new DateTime(2008, 01, 02, 06, 30, 00);
DateTime b = new DateTime(2008, 01, 03, 06, 30, 00);
TimeSpan duration = b - a;
double hours = (b-a).TotalHours;
```

OR

`int days = (int)Math.Ceiling(diff.TotalDays);`

Thanks

Top Experts
Last 24hrsThis month
 Graeme_Grant 376 ppolymorphe 216 Karthik Bangalore 180 Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 150 Maciej Los 130
 OriginalGriff 3,951 Peter Leow 2,901 Karthik Bangalore 2,350 ppolymorphe 2,278 Richard MacCutchan 1,504