Determines whether the expression yields a Boolean value.
命名空间： Microsoft.SqlServer.Dts.Tasks.ExpressionTask
程序集： Microsoft.SqlServer.ExpressionTask（在 Microsoft.SqlServer.ExpressionTask.dll 中）
语法
声明
Public Function IsBoolean ( _
vars As IDTSVariableDispenser100 _
) As Boolean
用法
Dim instance As ExpressionEval
Dim vars As IDTSVariableDispenser100
Dim returnValue As Boolean
returnValue = instance.IsBoolean(vars)
public bool IsBoolean(
IDTSVariableDispenser100 vars
)
public:
bool IsBoolean(
IDTSVariableDispenser100^ vars
)
member IsBoolean :
vars:IDTSVariableDispenser100 -> bool
public function IsBoolean(
vars : IDTSVariableDispenser100
) : boolean
参数
- vars
类型：Microsoft.SqlServer.Dts.Runtime.Wrapper.IDTSVariableDispenser100
A IDTSVariableDispenser100 object for using variables.
返回值
类型：System.Boolean
true if the expression yields a Boolean value; otherwise, false.