From 2a1cd4fda8a4a8e649910d16b4dfa1ce7ae63543 Mon Sep 17 00:00:00 2001 From: chai <215380520@qq.com> Date: Fri, 12 May 2023 09:24:40 +0800 Subject: *misc --- .../class-maps/optional-maps/index.html | 464 +++++++++++++++++++++ 1 file changed, 464 insertions(+) create mode 100644 ThirdParty/CsvHelper-master/docs/examples/configuration/class-maps/optional-maps/index.html (limited to 'ThirdParty/CsvHelper-master/docs/examples/configuration/class-maps/optional-maps/index.html') diff --git a/ThirdParty/CsvHelper-master/docs/examples/configuration/class-maps/optional-maps/index.html b/ThirdParty/CsvHelper-master/docs/examples/configuration/class-maps/optional-maps/index.html new file mode 100644 index 0000000..d57dcad --- /dev/null +++ b/ThirdParty/CsvHelper-master/docs/examples/configuration/class-maps/optional-maps/index.html @@ -0,0 +1,464 @@ + + + + + + + + + + + + + + + + + + + + + + + Optional Maps | CsvHelper + + + + + + + + + + + + + + + + +
+
+
+ + + +
+
+
+

Optional Maps

+

If you have data that may or may not have a header, you can make the mapping optional.

+
Data
+
Id,Name
+1,one
+
+
Example
+
void Main()
+{
+	using (var reader = new StreamReader("path\\to\\file.csv"))
+	using (var csv = new CsvReader(reader, CultureInfo.InvariantCulture))
+	{
+		csv.Context.RegisterClassMap<FooMap>();
+		csv.GetRecords<Foo>().ToList().Dump();
+	}
+}
+
+public class Foo
+{
+	public int Id { get; set; }
+	public string Name { get; set; }
+	public DateTimeOffset? Date { get; set; }
+}
+
+public class FooMap : ClassMap<Foo>
+{
+	public FooMap()
+	{
+		Map(m => m.Id);
+		Map(m => m.Name);
+		Map(m => m.Date).Optional();
+	}
+}
+
+ +
+
+
+
+ +

+ + + + + + + + + + + -- cgit v1.1-26-g67d0