来自数据集的SSRS文本框表达式过滤器

Question

Trying to create a TextBox expression:

="Validity: " & IIF(Fields!ID.Value = 2, Fields!Value.Value, "") & " from date above."

from a dataset:

ID; NAME;                VALUE;
1;  Delivery;            x Factory;
2;  Validity;            30 days;
3;  Pricing Structure;   Subject to...;

so that the text box would read "Validity: 30 days from date above" but returns "Validity: from date above"

The problem is the report only allows me to use aggregate First, max, etc from the dataset producing an incorrect result.

"Validity: " & IIF(First(Fields!ID.Value, "DataSet") = 1, First(Fields!Value.Value, ), "") & " from date above."

"Validity: x Factory from date above"

Answer 1

Your dataset is showing "30 days", do you require the text box to show this or do you require it to be "60 days"?

Meanwhile if you restrict you dataset to one row of data, ie insert a where/having clause such as : HAVING (ID = 2), then you could use the aggregate sum function in your expression:

="Validity: " & IIF(Sum(Fields!ID.Value, "DataSet1") = 2, Fields!Value.Value, "") & " from date above."