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Gets or sets the custom format string for a long time value.
Assembly: mscorlib (in mscorlib.dll)
The property defines the culture-specific format of date strings that are returned by calls to the DateTime..::..ToString and methods and by composite format strings that are supplied the "T" standard format string.
We recommend that you set the time separator in the long time pattern to an exact string instead of using the time separator placeholder. For example, to obtain the pattern h-mm-ss, set the long date pattern to "h-mm-ss".
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see dd66cd4c-b087-415f-9c3e-94e3a1835f74.