Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System/compmod/system/componentmodel/MultilineStringConverter.cs

@@ -0,0 +1,55 @@
+//------------------------------------------------------------------------------
+// <copyright file="MultilineStringConverter.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+namespace System.ComponentModel {
+
+    using System.ComponentModel;
+    using System.ComponentModel.Design;
+    using System.Diagnostics;
+    using System.Globalization;
+    using System.Security.Permissions;
+
+    /// <devdoc>
+    /// Provides a type converter to convert multiline strings to a simple string.
+    /// </devdoc>
+    [HostProtection(SharedState = true)]
+    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly")]
+    public class MultilineStringConverter : TypeConverter {
+
+        /// <devdoc>
+        /// Converts the given value object to the specified destination type.
+        /// </devdoc>
+        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) {
+            if (destinationType == null) {
+                throw new ArgumentNullException("destinationType");
+            }
+
+            if (destinationType == typeof(string)) {
+                if (value is string) {
+                    return SR.GetString(SR.MultilineStringConverterText);
+                }
+            }
+
+            return base.ConvertTo(context, culture, value, destinationType);
+        }
+        
+        /// <devdoc>
+        /// Gets a collection of properties for the type of array specified by the value
+        /// parameter using the specified context and attributes.
+        /// </devdoc>
+        public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes) {
+            return null;
+        }
+       
+        /// <devdoc>
+        /// Gets a value indicating whether this object supports properties.
+        /// </devdoc>
+        public override bool GetPropertiesSupported(ITypeDescriptorContext context) {
+            return false;
+        }
+    }
+}
+