Merge branch 'defaultStringType' of https://github.com/kppullin/dapper-dot-net...

Merge branch 'defaultStringType' of https://github.com/kppullin/dapper-dot-net into kppullin-defaultStringType

Conflicts:
	Dapper/SqlMapper.cs

Dapper NET40/SqlMapper.cs

@@ -5258,6 +5258,11 @@ internal static void Set(IDbDataParameter parameter, DataTable table, string typ
     /// </summary>
     sealed partial class DbString : Dapper.SqlMapper.ICustomQueryParameter
     {
+        /// <summary>
+        /// Default value for IsAnsi.
+        /// </summary>
+        public static bool IsAnsiDefault { get; set; }
+
         /// <summary>
         /// A value to set the default value of strings
         /// going through Dapper. Default is 4000, any value larger than this
@@ -5268,7 +5273,10 @@ sealed partial class DbString : Dapper.SqlMapper.ICustomQueryParameter
         /// <summary>
         /// Create a new DbString
         /// </summary>
-        public DbString() { Length = -1; }
+        public DbString() {
+            Length = -1;
+            IsAnsi = IsAnsiDefault;
+        }
         /// <summary>
         /// Ansi vs Unicode 
         /// </summary>

Tests/Tests.cs

@@ -1541,6 +1541,23 @@ public void TestDbString()
             ((int)obj.f).IsEqualTo(10);
         }
 
+        public void TestDefaultDbStringDbType()
+        {
+            var origDefaultStringDbType = DbString.IsAnsiDefault;
+            try
+            {
+                DbString.IsAnsiDefault = true;
+                var a = new DbString { Value = "abcde" };
+                var b = new DbString { Value = "abcde", IsAnsi = false };
+                a.IsAnsi.IsTrue();
+                b.IsAnsi.IsFalse();
+            }
+            finally
+            {
+                DbString.IsAnsiDefault = origDefaultStringDbType;
+            }
+        }
+
         class Person
         {
             public int PersonId { get; set; }
@@ -3289,7 +3306,7 @@ SELECT @a
             connection.Query<TimeSpan>("#TestProcWithTimeParameter", p, commandType: CommandType.StoredProcedure).First().IsEqualTo(new TimeSpan(10, 0, 0));
         }
 
-        public void DbString()
+        public void DbStringAnsi()
         {
             var a = connection.Query<int>("select datalength(@x)",
                 new { x = new DbString { Value = "abc", IsAnsi = true } }).Single();