Changed: ConvertToString will return null if the input parameter is n…

…ull instead of throwing an exception.
microsoft · Oct 12, 2017 · 04e81ac · 04e81ac
1 parent 0564f9c
commit 04e81ac
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Showing 2 changed files with 4 additions and 7 deletions.
diff --git a/src/VersionInfo.cs b/src/VersionInfo.cs
@@ -22,7 +22,7 @@ internal static class VersionInfo
         ///      Build Number (MMDD)
         ///      Revision (if any on the same day)
         /// </summary>
-        internal const string Version = "2.17.0927.0";
+        internal const string Version = "2.17.1012.0";
 
         /// <summary>
         /// File Version information for the assembly consists of the following four values:
@@ -31,6 +31,6 @@ internal static class VersionInfo
         ///      Build Number (MMDD)
         ///      Revision (if any on the same day)
         /// </summary>
-        internal const string FileVersion = "2.17.0927.0";
+        internal const string FileVersion = "2.17.1012.0";
     }
 }
diff --git a/src/WorkflowActivityLibrary/Common/ExpressionFunction.cs b/src/WorkflowActivityLibrary/Common/ExpressionFunction.cs
@@ -4579,10 +4579,6 @@ private string ConvertToString()
                 Type parameterType3 = typeof(Guid);
                 Type parameterType4 = typeof(byte[]);
                 object parameter = this.parameters[0];
-                if (parameter == null)
-                {
-                    throw Logger.Instance.ReportError(EventIdentifier.ExpressionFunctionConvertToStringNullFunctionParameterError, new InvalidFunctionFormatException(Messages.ExpressionFunction_NullFunctionParameterError, this.function, 1));
-                }
 
                 if (!this.VerifyType(parameter, parameterType) && !this.VerifyType(parameter, parameterType2) && !this.VerifyType(parameter, parameterType3) && !this.VerifyType(parameter, parameterType4) && !this.VerifyType(parameter, typeof(string)))
                 {
@@ -4593,7 +4589,8 @@ private string ConvertToString()
 
                 if (this.mode != EvaluationMode.Parse)
                 {
-                    result = Convert.ToString(parameter, CultureInfo.InvariantCulture);
+                    result = parameter == null ? null : Convert.ToString(parameter, CultureInfo.InvariantCulture);
+
                     Logger.Instance.WriteVerbose(EventIdentifier.ExpressionFunctionConvertToString, "ConvertToString('{0}') returned '{1}'.", this.parameters[0], result);
                 }
                 else