nullable

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C# cast object of type int to nullable enum

I just need to be able to cast an object to nullable enum. Object can be enum, null, or int. Thanks! public enum MyEnum { A, B }[详细]

2023-02-15 09:35 分类：问答
LINQAnonymous class, property set to null

I have a problem with returning a nullable double and int from a property in a anonymous class in LINQ. My select statement goes here:[详细]

2023-02-15 06:27 分类：问答
Query to check whether a column is nullable

Query to check whether a column is nullable (null values are allowed in the column or n开发者_高级运维ot).[详细]

2023-02-15 04:15 分类：问答
Implicit conversion to System.Double with a nullable struct via compiler generated locals: why is this failing?

Given the following, why does the InvalidCastException get thrown? I can\'t see why it should be outside of a bug (this is in x86; x64 crashes with a 0xC0000005 in clrjit.dll).[详细]

2023-02-14 13:29 分类：问答
SQLBulkCopy Throws InvalidOperationException Nullable Ints

I have a DataTable that I am attempting to 开发者_开发技巧upload, but I run into the following exception:[详细]

2023-02-13 10:57 分类：问答
How to change what default(T) returns in C#?

I would like to change how default(T) behaves for certain classes. So instead of returning null for my reference types I would like to return a null object.[详细]

2023-02-13 09:06 分类：问答
Null Linq Values

I cant get this to work. The State field is empty on certain occassions, I am trying to get the result to return \"--\" if it is empty, or doesn\'t exist.[详细]

2023-02-13 05:40 分类：问答
jqGrid saving a row with nullable columns

So I have a jqGrid on an ASP.NET MVC 3 website.It\'s loading the data, searching, filtering, and saving rows with the built in pop-up editor.What I can\'t get to work is saving a nullable property.I\'[详细]

2023-02-11 23:50 分类：问答
custom control with nullable property that has a default value

I can create a custom control with a default value: private bool exclue = false; public bool Exclude { get { return exclue; } set { exclue = value; } }[详细]

2023-02-09 22:16 分类：问答
How can I convert decimal? to decimal

may be it is a simple question but I\'m try all of conversio开发者_StackOverflow中文版n method! and it still has error![详细]

2023-02-08 05:31 分类：问答