为返回值对象赋值失败时会引发ReturnDataSetValueException异常。

src/Falcon.StoredProcedureRunner/ReturnDataSetValueException.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Reflection;
+
+namespace Falcon.StoredProcedureRunner
+{
+    /// <summary>
+    /// 设置返回对象值时候发生异常
+    /// </summary>
+    public class ReturnDataSetValueException:Exception
+    {
+        /// <summary>
+        /// 实例化一个给返回数据设置值的异常
+        /// </summary>
+        /// <param name="rowId">返回数据行号</param>
+        /// <param name="cName">返回的列名</param>
+        /// <param name="pi">要设置值的属性</param>
+        /// <param name="value">要设置的值</param>
+        /// <param name="innException">内部异常</param>
+        public ReturnDataSetValueException(int rowId,string cName, PropertyInfo pi,object value,Exception innException)
+            : base($"存储过程返回第[{rowId}]行[{cName}]列数据值为({value.GetType().FullName})[{value}]无法赋给属性({pi.PropertyType.FullName})[{pi.Name}]。",innException) { }
+    }
+}

src/Falcon.StoredProcedureRunner/Runner.cs

@@ -86,6 +86,7 @@ namespace Falcon.StoredProcedureRunner
                 var result = new List<object>();
                 if(!dr.CanGetColumnSchema())
                     return result;
+                int rowId = 0;
                 while(dr.Read()) {
                     var item = returnType.Assembly.CreateInstance(returnType.FullName);
                     var columnSchema = dr.GetColumnSchema();
@@ -95,9 +96,14 @@ namespace Falcon.StoredProcedureRunner
                         var pi = getProperty(returnType,name);
                         if(pi == null || !pi.CanWrite)
                             continue;
+                        try {
                             pi.SetValue(item,value);
+                        } catch(Exception ex) {
+                            throw new ReturnDataSetValueException(rowId,name,pi,value,ex);
+                        }
                     }
                     result.Add(item);
+                    rowId++;
                 }
                 connection.Close();
                 return result;