我写成如下:
Lookup(Fields!owner_id.Value & Fields!user_agent.Value,
Fields!id.Value & Fields!agent.Value, Fields!count.Value, "DataSet2")
但是报错了
Warning 1 [rsRuntimeErrorInExpression] The Value expression for the textrun ‘owner_id.Paragraphs[0].TextRuns[0]’ contains an error: Operator '&' is not defined for type 'Guid' and string "1.0".