本文整理汇总了C#中System.PageInfo.TryGetState方法的典型用法代码示例。如果您正苦于以下问题：C# PageInfo.TryGetState方法的具体用法？C# PageInfo.TryGetState怎么用？C# PageInfo.TryGetState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.PageInfo的用法示例。
在下文中一共展示了PageInfo.TryGetState方法的9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: TryGetState_Exception_IncorrectType
public void TryGetState_Exception_IncorrectType()
{
PageInfo navigationEntry = new PageInfo("Page Name", "Arguments");
navigationEntry.SetState<string>("MyKey", "Test State");
int result;
var e = Assert.Throws<InvalidCastException>(() => navigationEntry.TryGetState<int>("MyKey", out result));
Assert.Equal("Specified cast is not valid.", e.Message);
}示例2: SetState_SameStateKeyOverwritesPreviousValue
public void SetState_SameStateKeyOverwritesPreviousValue()
{
PageInfo navigationEntry = new PageInfo("Page Name", "Arguments");
navigationEntry.SetState<string>("MyKey", "State A");
navigationEntry.SetState<string>("MyKey", "State B");
string result;
bool success = navigationEntry.TryGetState<string>("MyKey", out result);
Assert.Equal(true, success);
Assert.Equal("State B", result);
}示例3: TryGetState_ReturnsFalseIfKeyIsUndefined
public void TryGetState_ReturnsFalseIfKeyIsUndefined()
{
PageInfo navigationEntry = new PageInfo("Page Name", "Arguments");
string result = "Old Value";
bool success = navigationEntry.TryGetState<string>("Undefined", out result);
Assert.Equal(false, success);
Assert.Equal(null, result);
}示例4: TryGetState_Exception_KeyIsEmpty
public void TryGetState_Exception_KeyIsEmpty()
{
PageInfo navigationEntry = new PageInfo("Page Name", "Arguments");
string result;
var e = Assert.Throws<ArgumentException>(() => navigationEntry.TryGetState<string>("", out result));
Assert.Equal("The argument cannot be null or an empty string.\r\nParameter name: key", e.Message);
Assert.Equal("key", e.ParamName);
}示例5: TryGetSetState_Struct_StoresState
public void TryGetSetState_Struct_StoresState()
{
PageInfo navigationEntry = new PageInfo("Page Name", "Arguments");
navigationEntry.SetState<StructState>("MyKey", new StructState() { Text = "Text Value", Number = 42 });
StructState result;
bool success = navigationEntry.TryGetState<StructState>("MyKey", out result);
Assert.Equal(true, success);
Assert.Equal("Text Value", result.Text);
Assert.Equal(42, result.Number);
}示例6: TryGetSetState_Class_StoresNullState
public void TryGetSetState_Class_StoresNullState()
{
PageInfo navigationEntry = new PageInfo("Page Name", "Arguments");
navigationEntry.SetState<ClassState>("MyKey", null);
ClassState result;
bool success = navigationEntry.TryGetState<ClassState>("MyKey", out result);
Assert.Equal(true, success);
Assert.Equal(null, result);
}示例7: TryGetSetState_Int_StoresState
public void TryGetSetState_Int_StoresState()
{
PageInfo navigationEntry = new PageInfo("Page Name", "Arguments");
navigationEntry.SetState<int>("MyKey", 42);
int result;
bool success = navigationEntry.TryGetState<int>("MyKey", out result);
Assert.Equal(true, success);
Assert.Equal(42, result);
}示例8: TryGetSetState_String_StoresState
public void TryGetSetState_String_StoresState()
{
PageInfo navigationEntry = new PageInfo("Page Name", "Arguments");
navigationEntry.SetState<string>("MyKey", "Test State");
string result;
bool success = navigationEntry.TryGetState<string>("MyKey", out result);
Assert.Equal(true, success);
Assert.Equal("Test State", result);
}示例9: Activate
/// <summary>
/// Populates the page with content passed during navigation. Any saved state is also
/// provided when recreating a page from a prior session.
/// </summary>
/// <param name="pageInfo">Information on the arguments and state passed to the page.</param>
public async void Activate(PageInfo pageInfo)
{
// TODO: Create an appropriate data model for your problem domain to replace the sample data
string groupId = pageInfo.GetArguments<string>();
var group = await SampleDataSource.GetGroupAsync(groupId);
this.Group = group;
this.Items = group.Items;
// Restore the selected item
string selectedItemId;
if (pageInfo.TryGetState<string>("SelectedItem", out selectedItemId))
SelectedItem = await SampleDataSource.GetItemAsync(selectedItemId);
else
SelectedItem = null;
}