Прочитај на енглеском Уреди

Делите путем

NameValueCollection.HasKeys Method

  • Reference

Definition

Namespace:
System.Collections.Specialized
Assemblies:
System.dll, System.Collections.Specialized.dll
Assemblies:
netstandard.dll, System.Collections.Specialized.dll
Assembly:
System.Collections.Specialized.dll
Assembly:
System.dll
Assembly:
netstandard.dll
Source:
NameValueCollection.cs
Source:
NameValueCollection.cs
Source:
NameValueCollection.cs

Gets a value indicating whether the NameValueCollection contains keys that are not null.

C# 
public bool HasKeys();

Returns

Boolean

true if the NameValueCollection contains keys that are not null; otherwise, false.

Remarks

This method is an O(1) operation.

Applies to

Производ Верзије
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 2.0, 2.1
UWP 10.0