Can you tell me a way to change the color of the underline property in SQL reports.
I have the following expression which does not work obviously:
=Format(Color:"Blue", "Underline")
You can't specify the color of the underline on it's own in SSRS. The underline color would have the color of the FONT.
You can use the BorderColor.Bottom property of a text box to set any color using a value (Red or a hex value #FF0000) or an expression:
=IIF(FIELDS.X.VALUE = "X", "Blue", "Red")
Set the BorderStyle.Bottom to Solid (or anything but None) to make it visible.