ConnectionSettings.ThrowIfPropertyNotSet 方法 (String, String, Boolean)
Throws an exception if the specified connection property is null or, optionally, empty.
命名空间： Microsoft.SqlServer.Management.Common
程序集： Microsoft.SqlServer.ConnectionInfo（在 Microsoft.SqlServer.ConnectionInfo.dll 中）
语法
声明
Protected Function ThrowIfPropertyNotSet ( _
propertyName As String, _
str As String, _
checkEmpty As Boolean _
) As String
用法
Dim propertyName As String
Dim str As String
Dim checkEmpty As Boolean
Dim returnValue As String
returnValue = Me.ThrowIfPropertyNotSet(propertyName, _
str, checkEmpty)
protected string ThrowIfPropertyNotSet(
string propertyName,
string str,
bool checkEmpty
)
protected:
String^ ThrowIfPropertyNotSet(
String^ propertyName,
String^ str,
bool checkEmpty
)
member ThrowIfPropertyNotSet :
propertyName:string *
str:string *
checkEmpty:bool -> string
protected function ThrowIfPropertyNotSet(
propertyName : String,
str : String,
checkEmpty : boolean
) : String
参数
- propertyName
类型：System.String
A string that specifies the name of the connection property, such as "Login".
- str
类型：System.String
A String object that contains the property value.
- checkEmpty
类型：System.Boolean
True if you want to check the property value for an empty string or null value; false if you want to check only for a null value.
返回值
类型：System.String
If the property is not set, this method throws a PropertyNotSetException. Otherwise, this method returns the str parameter value.
注释
If you want to throw the exception if the property value is an empty string, set the checkEmpty parameter to true.