/// <summary>
/// 向数据库中添加一条记录
/// </summary>
/// <param name="model">要添加的实体</param>
/// <returns>插入数据的ID</returns>
public int Insert(CommentModel model)
{
#region SQL语句
const string sql = @"
INSERT INTO [dbo].[Comment] (
[Content]
,[UId]
,[PId]
,[PostDate]
)
VALUES (
@Content
,@UId
,@PId
,@PostDate
);select @@IDENTITY";
#endregion
var res = SqlHelper.ExecuteScalar(sql,
new SqlParameter("@Content", model.Content),
new SqlParameter("@UId", model.UId),
new SqlParameter("@PId", model.PId),
new SqlParameter("@PostDate", model.PostDate)
);
return res == null ? 0 : Convert.ToInt32(res);
}
/// <summary>
/// 根据主键ID更新一条记录
/// </summary>
/// <param name="model">更新后的实体</param>
/// <returns>执行结果受影响行数</returns>
public int Update(CommentModel model)
{
return _dao.Update(model);
}
/// <summary>
/// 向数据库中添加一条记录
/// </summary>
/// <param name="model">要添加的实体</param>
/// <returns>插入数据的ID</returns>
public int Insert(CommentModel model)
{
return _dao.Insert(model);
}
/// <summary>
/// 根据主键ID更新一条记录
/// </summary>
/// <param name="model">更新后的实体</param>
/// <returns>执行结果受影响行数</returns>
public int Update(CommentModel model)
{
#region SQL语句
const string sql = @"
UPDATE [dbo].[Comment]
SET
[Content] = @Content
,[UId] = @UId
,[PId] = @PId
,[PostDate] = @PostDate
WHERE [CId] = @CId";
#endregion
return SqlHelper.ExecuteNonQuery(sql,
new SqlParameter("@CId", model.CId),
new SqlParameter("@Content", model.Content),
new SqlParameter("@UId", model.UId),
new SqlParameter("@PId", model.PId),
new SqlParameter("@PostDate", model.PostDate)
);
}