本文整理汇总了C#中System.InvalidOperationException类的典型用法代码示例。如果您正苦于以下问题：C# InvalidOperationException类的具体用法？C# InvalidOperationException怎么用？C# InvalidOperationException使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
InvalidOperationException类属于System命名空间，在下文中一共展示了InvalidOperationException类的15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: threadExampleBtn_Click
private async void threadExampleBtn_Click(object sender, RoutedEventArgs e)
{
textBox1.Text = String.Empty;
textBox1.Text = "Simulating work on UI thread.\n";
DoSomeWork(20);
textBox1.Text += "Work completed...\n";
textBox1.Text += "Simulating work on non-UI thread.\n";
await Task.Run( () => DoSomeWork(1000));
textBox1.Text += "Work completed...\n";
}
private async void DoSomeWork(int milliseconds)
{
// Simulate work.
await Task.Delay(milliseconds);
// Report completion.
var msg = String.Format("Some work completed in {0} ms.\n", milliseconds);
textBox1.Text += msg;
}示例2: DoSomeWork
private async void DoSomeWork(int milliseconds)
{
// Simulate work.
await Task.Delay(milliseconds);
// Report completion.
bool uiAccess = textBox1.Dispatcher.CheckAccess();
String msg = String.Format("Some work completed in {0} ms. on {1}UI thread\n",
milliseconds, uiAccess ? String.Empty : "non-");
if (uiAccess)
textBox1.Text += msg;
else
textBox1.Dispatcher.Invoke(() => { textBox1.Text += msg; });
}示例3: DoSomeWork
private async void DoSomeWork(int milliseconds)
{
// Simulate work.
await Task.Delay(milliseconds);
// Report completion.
bool uiAccess = textBox1.Dispatcher.HasThreadAccess;
String msg = String.Format("Some work completed in {0} ms. on {1}UI thread\n",
milliseconds, uiAccess ? String.Empty : "non-");
if (uiAccess)
textBox1.Text += msg;
else
await textBox1.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => { textBox1.Text += msg; });
}示例4: threadExampleBtn_Click
List<String> lines = new List<String>();
private async void threadExampleBtn_Click(object sender, EventArgs e)
{
textBox1.Text = String.Empty;
lines.Clear();
lines.Add("Simulating work on UI thread.");
textBox1.Lines = lines.ToArray();
DoSomeWork(20);
lines.Add("Simulating work on non-UI thread.");
textBox1.Lines = lines.ToArray();
await Task.Run(() => DoSomeWork(1000));
lines.Add("ThreadsExampleBtn_Click completes. ");
textBox1.Lines = lines.ToArray();
}
private async void DoSomeWork(int milliseconds)
{
// simulate work
await Task.Delay(milliseconds);
// report completion
lines.Add(String.Format("Some work completed in {0} ms on UI thread.", milliseconds));
textBox1.Lines = lines.ToArray();
}示例5: DoSomeWork
private async void DoSomeWork(int milliseconds)
{
// simulate work
await Task.Delay(milliseconds);
// Report completion.
bool uiMarshal = textBox1.InvokeRequired;
String msg = String.Format("Some work completed in {0} ms. on {1}UI thread\n",
milliseconds, uiMarshal ? String.Empty : "non-");
lines.Add(msg);
if (uiMarshal) {
textBox1.Invoke(new Action(() => { textBox1.Lines = lines.ToArray(); }));
}
else {
textBox1.Lines = lines.ToArray();
}
}示例6: Main
//引入命名空间
using System;
using System.Collections.Generic;
public class Example
{
public static void Main()
{
var numbers = new List<int>() { 1, 2, 3, 4, 5 };
foreach (var number in numbers) {
int square = (int) Math.Pow(number, 2);
Console.WriteLine("{0}^{1}", number, square);
Console.WriteLine("Adding {0} to the collection...\n", square);
numbers.Add(square);
}
}
}输出：
1^1 Adding 1 to the collection... Unhandled Exception: System.InvalidOperationException: Collection was modified; enumeration operation may not execute. at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) at System.Collections.Generic.List`1.Enumerator.MoveNextRare() at Example.Main()
示例7: Main
//引入命名空间
using System;
using System.Collections.Generic;
public class Example
{
public static void Main()
{
var numbers = new List<int>() { 1, 2, 3, 4, 5 };
int upperBound = numbers.Count - 1;
for (int ctr = 0; ctr <= upperBound; ctr++) {
int square = (int) Math.Pow(numbers[ctr], 2);
Console.WriteLine("{0}^{1}", numbers[ctr], square);
Console.WriteLine("Adding {0} to the collection...\n", square);
numbers.Add(square);
}
Console.WriteLine("Elements now in the collection: ");
foreach (var number in numbers)
Console.Write("{0} ", number);
}
}输出：
1^1 Adding 1 to the collection... 2^4 Adding 4 to the collection... 3^9 Adding 9 to the collection... 4^16 Adding 16 to the collection... 5^25 Adding 25 to the collection... Elements now in the collection: 1 2 3 4 5 1 4 9 16 25
示例8: Main
//引入命名空间
using System;
using System.Collections.Generic;
public class Example
{
public static void Main()
{
var numbers = new List<int>() { 1, 2, 3, 4, 5 };
var temp = new List<int>();
// Square each number and store it in a temporary collection.
foreach (var number in numbers) {
int square = (int) Math.Pow(number, 2);
temp.Add(square);
}
// Combine the numbers into a single array.
int[] combined = new int[numbers.Count + temp.Count];
Array.Copy(numbers.ToArray(), 0, combined, 0, numbers.Count);
Array.Copy(temp.ToArray(), 0, combined, numbers.Count, temp.Count);
// Iterate the array.
foreach (var value in combined)
Console.Write("{0} ", value);
}
}输出：
1 2 3 4 5 1 4 9 16 25
示例9: Person
//引入命名空间
using System;
using System.Collections.Generic;
public class Person
{
public Person(String fName, String lName)
{
FirstName = fName;
LastName = lName;
}
public String FirstName { get; set; }
public String LastName { get; set; }
}
public class Example
{
public static void Main()
{
var people = new List<Person>();
people.Add(new Person("John", "Doe"));
people.Add(new Person("Jane", "Doe"));
people.Sort();
foreach (var person in people)
Console.WriteLine("{0} {1}", person.FirstName, person.LastName);
}
}输出：
Unhandled Exception: System.InvalidOperationException: Failed to compare two elements in the array. ---> System.ArgumentException: At least one object must implement IComparable. at System.Collections.Comparer.Compare(Object a, Object b) at System.Collections.Generic.ArraySortHelper`1.SwapIfGreater(T[] keys, IComparer`1 comparer, Int32 a, Int32 b) at System.Collections.Generic.ArraySortHelper`1.DepthLimitedQuickSort(T[] keys, Int32 left, Int32 right, IComparer`1 comparer, Int32 depthLimit) at System.Collections.Generic.ArraySortHelper`1.Sort(T[] keys, Int32 index, Int32 length, IComparer`1 comparer) --- End of inner exception stack trace --- at System.Collections.Generic.ArraySortHelper`1.Sort(T[] keys, Int32 index, Int32 length, IComparer`1 comparer) at System.Array.Sort[T](T[] array, Int32 index, Int32 length, IComparer`1 comparer) at System.Collections.Generic.List`1.Sort(Int32 index, Int32 count, IComparer`1 comparer) at Example.Main()
示例10: Person
//引入命名空间
using System;
using System.Collections.Generic;
public class Person : IComparable<Person>
{
public Person(String fName, String lName)
{
FirstName = fName;
LastName = lName;
}
public String FirstName { get; set; }
public String LastName { get; set; }
public int CompareTo(Person other)
{
return String.Format("{0} {1}", LastName, FirstName).
CompareTo(String.Format("{0} {1}", LastName, FirstName));
}
}
public class Example
{
public static void Main()
{
var people = new List<Person>();
people.Add(new Person("John", "Doe"));
people.Add(new Person("Jane", "Doe"));
people.Sort();
foreach (var person in people)
Console.WriteLine("{0} {1}", person.FirstName, person.LastName);
}
}输出：
Jane Doe John Doe
示例11: Person
//引入命名空间
using System;
using System.Collections.Generic;
public class Person
{
public Person(String fName, String lName)
{
FirstName = fName;
LastName = lName;
}
public String FirstName { get; set; }
public String LastName { get; set; }
}
public class PersonComparer : IComparer<Person>
{
public int Compare(Person x, Person y)
{
return String.Format("{0} {1}", x.LastName, x.FirstName).
CompareTo(String.Format("{0} {1}", y.LastName, y.FirstName));
}
}
public class Example
{
public static void Main()
{
var people = new List<Person>();
people.Add(new Person("John", "Doe"));
people.Add(new Person("Jane", "Doe"));
people.Sort(new PersonComparer());
foreach (var person in people)
Console.WriteLine("{0} {1}", person.FirstName, person.LastName);
}
}输出：
Jane Doe John Doe
示例12: Person
//引入命名空间
using System;
using System.Collections.Generic;
public class Person
{
public Person(String fName, String lName)
{
FirstName = fName;
LastName = lName;
}
public String FirstName { get; set; }
public String LastName { get; set; }
}
public class Example
{
public static void Main()
{
var people = new List<Person>();
people.Add(new Person("John", "Doe"));
people.Add(new Person("Jane", "Doe"));
people.Sort(PersonComparison);
foreach (var person in people)
Console.WriteLine("{0} {1}", person.FirstName, person.LastName);
}
public static int PersonComparison(Person x, Person y)
{
return String.Format("{0} {1}", x.LastName, x.FirstName).
CompareTo(String.Format("{0} {1}", y.LastName, y.FirstName));
}
}输出：
Jane Doe John Doe
示例13: Main
//引入命名空间
using System;
using System.Linq;
public class Example
{
public static void Main()
{
var queryResult = new int?[] { 1, 2, null, 4 };
var map = queryResult.Select(nullableInt => (int)nullableInt);
// Display list.
foreach (var num in map)
Console.Write("{0} ", num);
Console.WriteLine();
}
}输出：
1 2 Unhandled Exception: System.InvalidOperationException: Nullable object must have a value. at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) at Example.b__0(Nullable`1 nullableInt) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at Example.Main()
示例14: Main
//引入命名空间
using System;
using System.Linq;
public class Example
{
public static void Main()
{
var queryResult = new int?[] { 1, 2, null, 4 };
var numbers = queryResult.Select(nullableInt => (int)nullableInt.GetValueOrDefault());
// Display list using Nullable<int>.HasValue.
foreach (var number in numbers)
Console.Write("{0} ", number);
Console.WriteLine();
numbers = queryResult.Select(nullableInt => (int) (nullableInt.HasValue ? nullableInt : -1));
// Display list using Nullable<int>.GetValueOrDefault.
foreach (var number in numbers)
Console.Write("{0} ", number);
Console.WriteLine();
}
}输出：
1 2 0 4 1 2 -1 4
示例15: Main
//引入命名空间
using System;
using System.Linq;
public class Example
{
public static void Main()
{
int[] data = { 1, 2, 3, 4 };
var average = data.Where(num => num > 4).Average();
Console.Write("The average of numbers greater than 4 is {0}",
average);
}
}输出：
Unhandled Exception: System.InvalidOperationException: Sequence contains no elements at System.Linq.Enumerable.Average(IEnumerable`1 source) at Example.Main()