时间格式更改错误 - GridDataView / VBnet

Question

I am storing in SQL HH:mm:ss format ( time(2) ), and GridDataView shows it this way. I am trying to change it both with Properties window, or by code

DataGridView1.Columns(5).DefaultCellStyle.BackColor = Color.Red
DataGridView1.Columns(5).DefaultCellStyle.Format = "HH:mm"

Color changes nicely, but value is not visible - shows ExceptionError - Incorrect Input Format DataGridView Default error

Answer 1

That SQL Server data type should map to TimeSpan in .NET. "HH:mm" is a valid format specifier for DateTime but not for TimeSpan . TimeSpan didn't even support formatting before .NET 4.0 and, since then, you'd need to use "HH\\:mm", escaping the delimiter. Read more about formatting TimeSpan values here .

Answer 2

更改为经典 Datetime 对象解决了问题。