DbCommandExtension also complements the fallback processing of DbType.

mikependon · Jan 2, 2021 · aea430a · aea430a
1 parent 4f64ab6
commit aea430a
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/RepoDb.Core/RepoDb/Extensions/DbCommandExtension.cs b/RepoDb.Core/RepoDb/Extensions/DbCommandExtension.cs
@@ -262,6 +262,12 @@ private static void CreateParametersInternal(IDbCommand command,
                     classProperty.GetDbType() ??
                     value?.GetType()?.GetDbType();
 
+                // Try get fallback dbType by classProperty to avoid being mistaken as string when value is null.
+                if (dbType == null && classProperty != null)
+                {
+                    dbType = clientTypeToDbTypeResolver.Resolve(classProperty.PropertyInfo.PropertyType);
+                }
+
                 // Specialized enum
                 if (dbType == null && isEnum.HasValue && isEnum.Value == true)
                 {
@@ -334,6 +340,12 @@ private static void CreateParameters(IDbCommand command,
                     classProperty?.GetDbType() ??
                     value?.GetType()?.GetDbType();
 
+                // Try get fallback dbType by classProperty to avoid being mistaken as string when value is null.
+                if (dbType == null && classProperty != null)
+                {
+                    dbType = clientTypeToDbTypeResolver.Resolve(classProperty.PropertyInfo.PropertyType);
+                }
+
                 // Specialized enum
                 if (dbType == null && isEnum.HasValue && isEnum.Value == true)
                 {
@@ -463,6 +475,12 @@ private static void CreateParameters(this IDbCommand command,
                 classProperty?.GetDbType() ??
                 value?.GetType()?.GetDbType();
 
+            // Try get fallback dbType by classProperty to avoid being mistaken as string when value is null.
+            if (dbType == null && classProperty != null)
+            {
+                dbType = clientTypeToDbTypeResolver.Resolve(classProperty.PropertyInfo.PropertyType);
+            }
+
             // Specialized enum
             if (dbType == null && isEnum.HasValue && isEnum == true)
             {