/// <summary>
/// 得到一个对象实体
/// </summary>
public static IMSG GetModel(int ID, int msg_to)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select top 1 ID,msg_from,msg_to,msg_content,msg_addtime,msg_title from Msg ");
strSql.Append(" where ID=@ID and msg_to = @msg_to");
SqlParameter[] parameters =
{
new SqlParameter("@ID", SqlDbType.Int, 4),
new SqlParameter("@msg_to", SqlDbType.Int, 4)
};
parameters[0].Value = ID;
parameters[1].Value = msg_to;
IMSG model = new IMSG();
DataSet ds = DataBase.ExecuteDataset(CommandType.Text, strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
if (ds.Tables[0].Rows[0]["ID"].ToString() != "")
{
model.ID = int.Parse(ds.Tables[0].Rows[0]["ID"].ToString());
}
if (ds.Tables[0].Rows[0]["msg_from"].ToString() != "")
{
model.msg_from = int.Parse(ds.Tables[0].Rows[0]["msg_from"].ToString());
}
if (ds.Tables[0].Rows[0]["msg_to"].ToString() != "")
{
model.msg_to = int.Parse(ds.Tables[0].Rows[0]["msg_to"].ToString());
}
model.msg_content = ds.Tables[0].Rows[0]["msg_content"].ToString();
if (ds.Tables[0].Rows[0]["msg_addtime"].ToString() != "")
{
model.msg_addtime = DateTime.Parse(ds.Tables[0].Rows[0]["msg_addtime"].ToString());
}
model.msg_title = ds.Tables[0].Rows[0]["msg_title"].ToString();
return(model);
}
else
{
return(null);
}
}
/// <summary>
/// 更新一条数据
/// </summary>
public static bool Update(IMSG model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update Msg set ");
strSql.Append("msg_from=@msg_from,");
strSql.Append("msg_to=@msg_to,");
strSql.Append("msg_content=@msg_content,");
strSql.Append("msg_addtime=@msg_addtime,");
strSql.Append("msg_title=@msg_title,");
strSql.Append("isRead=@isRead");
strSql.Append(" where ID=@ID");
SqlParameter[] parameters =
{
new SqlParameter("@msg_from", SqlDbType.Int, 4),
new SqlParameter("@msg_to", SqlDbType.Int, 4),
new SqlParameter("@msg_content", SqlDbType.NVarChar, 2000),
new SqlParameter("@msg_addtime", SqlDbType.DateTime),
new SqlParameter("@msg_title", SqlDbType.NVarChar, 50),
new SqlParameter("@ID", SqlDbType.Int, 4),
new SqlParameter("@isRead", SqlDbType.Bit, 1)
};
parameters[0].Value = model.msg_from;
parameters[1].Value = model.msg_to;
parameters[2].Value = model.msg_content;
parameters[3].Value = model.msg_addtime;
parameters[4].Value = model.msg_title;
parameters[5].Value = model.ID;
parameters[6].Value = model.isRead;
int rows = DataBase.ExecuteNonQuery(CommandType.Text, strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 增加一条数据
/// </summary>
public static int Add(IMSG model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into Msg(");
strSql.Append("msg_from,msg_to,msg_content,msg_addtime,msg_title,msg_fromname)");
strSql.Append(" values (");
strSql.Append("@msg_from,@msg_to,@msg_content,@msg_addtime,@msg_title,@msg_fromname)");
strSql.Append(";select @@IDENTITY");
SqlParameter[] parameters =
{
new SqlParameter("@msg_from", SqlDbType.Int, 4),
new SqlParameter("@msg_to", SqlDbType.Int, 4),
new SqlParameter("@msg_content", SqlDbType.NVarChar, 2000),
new SqlParameter("@msg_addtime", SqlDbType.DateTime),
new SqlParameter("@msg_title", SqlDbType.NVarChar, 50),
new SqlParameter("@msg_fromname", SqlDbType.NVarChar, 50)
};
parameters[0].Value = model.msg_from;
parameters[1].Value = model.msg_to;
parameters[2].Value = model.msg_content;
parameters[3].Value = model.msg_addtime;
parameters[4].Value = model.msg_title;
parameters[5].Value = model.msg_fromname;
object obj = DataBase.ExecuteScalar(CommandType.Text, strSql.ToString(), parameters);
if (obj == null)
{
return(0);
}
else
{
return(Convert.ToInt32(obj));
}
}
