Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data/System/Data/SqlClient/SqlCredential.cs

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+//------------------------------------------------------------------------------
+// <copyright file="SqlCredential.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+// <owner current="true" primary="true">[....]</owner>
+// <owner current="true" primary="false">[....]</owner>
+//------------------------------------------------------------------------------
+
+namespace System.Data.SqlClient
+{
+    using System;
+    using System.Security;
+    using System.Data.Common;
+
+    // Represent a pair of user id and password which to be used for SQL Authentication
+    // SqlCredential takes password as SecureString which is better way to store security sensitive information
+    // This class is immutable
+    public sealed class SqlCredential
+    {
+        string _userId;
+        SecureString _password;
+
+        //
+        // PUBLIC CONSTRUCTOR
+        //
+
+        // SqlCredential
+        //  userId: userId
+        //  password: password
+        //
+        public SqlCredential(string userId, SecureString password)
+        {
+            if (userId == null)
+            {
+                throw ADP.ArgumentNull("userId");
+            }
+
+            if (userId.Length > TdsEnums.MAXLEN_USERNAME)
+            {
+                throw ADP.InvalidArgumentLength("userId", TdsEnums.MAXLEN_USERNAME);
+            }
+
+            if (password == null)
+            {
+                throw ADP.ArgumentNull("password");
+            }
+
+            if (password.Length > TdsEnums.MAXLEN_PASSWORD)
+            {
+                throw ADP.InvalidArgumentLength("password", TdsEnums.MAXLEN_PASSWORD);
+            }
+
+            if (!password.IsReadOnly())
+            {
+                throw ADP.MustBeReadOnly("password");
+            }
+
+            _userId = userId;
+            _password = password;
+        }
+
+        //
+        // PUBLIC PROPERTIES
+        //
+        public string UserId
+        {
+            get
+            {
+                return _userId;
+            }
+        }
+
+        public SecureString Password
+        {
+            get
+            {
+                return _password;
+            }
+        }
+    }
+}   // System.Data.SqlClient namespace
+
+