Question

Is there any built-in method in asp.net to convert a string to a uniqueidentifier for SQL Server, just like .ToString().

我有了一个错误: 转换在从特性上传给独一无二的识别器时失败。



或者任何人都知道如何解决这一问题。 感谢。

Answer 1

<代码>准则的构造者,以<代码>载为参数。

Guid aGuid = new Guid(aString);

2. 正确确保:

A string that contains a GUID in one of the following formats ("d" represents a hexadecimal digit whose case is ignored):

32个毗连数字:dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

- 或

Groups of 8, 4, 4, 4, and 12 digits with hyphens between the groups. The entire GUID can optionally be enclosed in matching braces or parentheses: dddddddd-dddd-dddd-dddd-dddddddddddd - 或{dddddddd-dddd-dddd-dddd-dddddddddddd} - 或(dddddddd-dddd-dddd-dddd-dddddddddddd)

-or-

Groups of 8, 4, and 4 digits, and a subset of eight groups of 2 digits, with each group prefixed by "0x" or "0X", and separated by commas. The entire GUID, as well as the subset, is enclosed in matching braces: {0xdddddddd, 0xdddd, 0xdddd,{0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd}}

全文见。

你可以把你的作用作为参数:

Guid roleID = new Guid(roleIDAsString);
sqlCommand.Parameters.Add("@RoleID", SqlDbType.UniqueIdentifier).Value = roleID;

Answer 2

Guid outGuid;
Guid.TryParse(stringInput, out outGuid);

Won t crash if the string is incorrectly formatted

Answer 3

你们可以使用

 Guid myNew = new Guid("xxxx-xxx");

Answer 4

string aspUserID = myObject.ProviderUserKey.ToString();
Guid userGuid = new Guid(aspUserID);

或

 Guid yourGuid = new Guid(yourString);

Answer 5

在使用前的舱面值检查

Guid g = new Guid(string) ;

友情链接