本文整理汇总了C#中System.Collections.Concurrent.ConcurrentDictionary<TKey,TValue>.TryAdd方法的典型用法代码示例。如果您正苦于以下问题：C# ConcurrentDictionary<TKey,TValue>.TryAdd方法的具体用法？C# ConcurrentDictionary<TKey,TValue>.TryAdd怎么用？C# ConcurrentDictionary<TKey,TValue>.TryAdd使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Collections.Concurrent.ConcurrentDictionary<TKey,TValue>的用法示例。
在下文中一共展示了ConcurrentDictionary<TKey,TValue>.TryAdd方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Main
class CD_TryXYZ
{
// Demonstrates:
// ConcurrentDictionary<TKey, TValue>.TryAdd()
// ConcurrentDictionary<TKey, TValue>.TryUpdate()
// ConcurrentDictionary<TKey, TValue>.TryRemove()
static void Main()
{
int numFailures = 0; // for bookkeeping
// Construct an empty dictionary
ConcurrentDictionary<int, String> cd = new ConcurrentDictionary<int, string>();
// This should work
if (!cd.TryAdd(1, "one"))
{
Console.WriteLine("CD.TryAdd() failed when it should have succeeded");
numFailures++;
}
// This shouldn't work -- key 1 is already in use
if (cd.TryAdd(1, "uno"))
{
Console.WriteLine("CD.TryAdd() succeeded when it should have failed");
numFailures++;
}
// Now change the value for key 1 from "one" to "uno" -- should work
if (!cd.TryUpdate(1, "uno", "one"))
{
Console.WriteLine("CD.TryUpdate() failed when it should have succeeded");
numFailures++;
}
// Try to change the value for key 1 from "eine" to "one"
// -- this shouldn't work, because the current value isn't "eine"
if (cd.TryUpdate(1, "one", "eine"))
{
Console.WriteLine("CD.TryUpdate() succeeded when it should have failed");
numFailures++;
}
// Remove key/value for key 1. Should work.
string value1;
if (!cd.TryRemove(1, out value1))
{
Console.WriteLine("CD.TryRemove() failed when it should have succeeded");
numFailures++;
}
// Remove key/value for key 1. Shouldn't work, because I already removed it
string value2;
if (cd.TryRemove(1, out value2))
{
Console.WriteLine("CD.TryRemove() succeeded when it should have failed");
numFailures++;
}
// If nothing went wrong, say so
if (numFailures == 0) Console.WriteLine(" OK!");
}
}