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DataPRO/IService/.svn/pristine/04/048e9cdbcd02a1bfc7f47da9b961434201d5560a.svn-base

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+using System;
+
+// ReSharper disable once CheckNamespace
+namespace DTS.DASLib.Service
+{
+    /// <inheritdoc />
+    /// <summary>
+    /// this attribute allows us to associate a max input range in mV for a gain
+    /// note that this can be computed using the gain itself and the input range
+    /// but this allows us to more tightly control things (say by using 2450 instead of 2500 for full range or something similar)
+    /// http://fogbugz/fogbugz/default.asp?10080
+    /// </summary>
+    public class MaxInputRangeAttribute : Attribute
+    {
+        /// <summary>
+        /// returns the max input range in mV for gain
+        /// http://fogbugz/fogbugz/default.asp?10080
+        /// </summary>
+        /// <param name="o"></param>
+        /// <returns></returns>
+        public static double GetMaxInputRangemV(object o)
+        {
+            if (o == null) return 0D;
+            var mi = o.GetType().GetMember(o.ToString());
+            if (mi.Length <= 0) return 0D;
+            return GetCustomAttribute(mi[0], typeof(MaxInputRangeAttribute)) is MaxInputRangeAttribute attr ? attr._maximumInputRangemV : 0D;
+        }
+
+        private readonly double _maximumInputRangemV;
+        public MaxInputRangeAttribute(double maxInputRangemV)
+        {
+            _maximumInputRangemV = maxInputRangemV;
+        }
+    }
+}