Changed the ParamNameFilter to a instance variable on the Dialect Provider so that it can support devart and sql server in the one program

Author: stuartbfs

src/ServiceStack.OrmLite/IOrmLiteDialectProvider.cs

@@ -51,6 +51,8 @@ public interface IOrmLiteDialectProvider
 
         IStringSerializer StringSerializer { get; set; }
 
+        Func<string, string> ParamNameFilter { get; set; }
+
         /// <summary>
         /// Quote the string so that it can be used inside an SQL-expression
         /// Escape quotes inside the string

src/ServiceStack.OrmLite/OrmLiteDialectProviderBase.cs

@@ -198,6 +198,8 @@ public int DefaultStringLength
 
         public IStringSerializer StringSerializer { get; set; }
 
+        public Func<string, string> ParamNameFilter { get; set; } = OrmLiteConfig.ParamNameFilter;
+
         public string DefaultValueFormat = " DEFAULT ({0})";
 
         private EnumConverter enumConverter;
@@ -910,10 +912,10 @@ public virtual void SetParameterValues<T>(IDbCommand dbCmd, object obj)
 
                 if (fieldDef == null)
                 {
-                    if (OrmLiteConfig.ParamNameFilter != null)
+                    if (ParamNameFilter != null)
                     {
                         fieldDef = modelDef.GetFieldDefinition(name => 
-                            string.Equals(OrmLiteConfig.ParamNameFilter(name), fieldName, StringComparison.OrdinalIgnoreCase));
+                            string.Equals(ParamNameFilter(name), fieldName, StringComparison.OrdinalIgnoreCase));
                     }
 
                     if (fieldDef == null)

src/ServiceStack.OrmLite/OrmLiteDialectProviderExtensions.cs

@@ -8,7 +8,7 @@ public static class OrmLiteDialectProviderExtensions
     {
         public static string GetParam(this IOrmLiteDialectProvider dialect, string name)
         {
-            return dialect.ParamString + (OrmLiteConfig.ParamNameFilter?.Invoke(name) ?? name);
+            return dialect.ParamString + (dialect.ParamNameFilter?.Invoke(name) ?? name);
         }
 
         public static string GetParam(this IOrmLiteDialectProvider dialect, int indexNo = 0)