一个Dotnet数据框架的bug

很久没写C#代码了，今天在维护公司老项目时，偶然发现一个BUG。记录一下，后面的同窗就不要踩坑啦。

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该项目采用了一个国产的数据访问框架 PDF.NET ，可是我有一个表的主键是bigint，数据编号已经大于Int32.MaxValue，此时就不能再插入数据了。缘由以下（红色部分转换报错）：

 

internal static int InsertInner(EntityBase entity, List<string> objFields, CommonDB DB)
        {
            if (objFields == null || objFields.Count == 0) return 0; IDataParameter[] paras = new IDataParameter[objFields.Count]; string tableName = entity.TableName; string identityName = entity.IdentityName; string sql = "INSERT INTO " + entity.GetSchemeTableName(); string fields = ""; string values = ""; int index = 0; //获取实体属性信息缓存 var entityFieldsCache = EntityFieldsCache.Item(entity.GetType()); foreach (string field in objFields) { if (identityName != field) { fields += ",[" + field + "]"; string paraName = DB.GetParameterChar + "P" + index.ToString(); values += "," + paraName; paras[index] = DB.GetParameter(paraName, entity.PropertyList(field)); //从缓存中获取当前field所对应的类型 Type fieldType = entityFieldsCache.GetPropertyType(field); if (fieldType == typeof(string) && paras[index].Value != null) //为字符串类型的参数指定长度 edit at 2012.4.23 //((IDbDataParameter)paras[index]).Size = entity.GetStringFieldSize(field); SetParameterSize(ref paras[index], entity, field,DB); else if (fieldType == typeof(byte[])) //为字节类型指定转换类型，防止空值时被看成字符串类型 paras[index].DbType = DbType.Binary; index++; } } sql = sql + "(" + fields.TrimStart(',') + ") VALUES (" + values.TrimStart(',') + ")"; int count = 0; if (identityName != "") { //有自增字段 object id = entity.PropertyList(identityName); EntityCommand ec = new EntityCommand(entity, DB); string insertKey = ec.GetInsertKey(); count = DB.ExecuteInsertQuery(sql, CommandType.Text, paras, ref id,insertKey); entity.setProperty(identityName, Convert.ToInt32(id)); } else { count = DB.ExecuteNonQuery(sql, CommandType.Text, paras); } if (count > 0) entity.ResetChanges(); return count; }

 

该bug已经给做者说了，期待他们的及时修复。