/// <summary>
/// 增加一条数据
/// </summary>
public int Add(Mxm.Model.message model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into message(");
strSql.Append("title,content,parent_id,create_time,type_id)");
strSql.Append(" values (");
strSql.Append("@title,@content,@parent_id,@create_time,@type_id)");
strSql.Append(";select @@IDENTITY");
SqlParameter[] parameters =
{
new SqlParameter("@title", SqlDbType.NVarChar, 500),
new SqlParameter("@content", SqlDbType.NVarChar, 0),
new SqlParameter("@parent_id", SqlDbType.Int, 4),
new SqlParameter("@create_time", SqlDbType.DateTime),
new SqlParameter("@type_id", SqlDbType.Int, 4)
};
parameters[0].Value = model.title;
parameters[1].Value = model.content;
parameters[2].Value = model.parent_id;
parameters[3].Value = model.create_time;
parameters[4].Value = model.type_id;
object obj = DbHelperSQL.GetSingle(strSql.ToString(), parameters);
if (obj == null)
{
return(-1);
}
else
{
return(Convert.ToInt32(obj));
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public Mxm.Model.message GetModel(int mid)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select mid,title,content,parent_id,create_time,type_id from message ");
strSql.Append(" where mid=@mid ");
SqlParameter[] parameters =
{
new SqlParameter("@mid", SqlDbType.Int, 4)
};
parameters[0].Value = mid;
Mxm.Model.message model = new Mxm.Model.message();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
if (ds.Tables[0].Rows[0]["mid"].ToString() != "")
{
model.mid = int.Parse(ds.Tables[0].Rows[0]["mid"].ToString());
}
model.title = ds.Tables[0].Rows[0]["title"].ToString();
model.content = ds.Tables[0].Rows[0]["content"].ToString();
if (ds.Tables[0].Rows[0]["parent_id"].ToString() != "")
{
model.parent_id = int.Parse(ds.Tables[0].Rows[0]["parent_id"].ToString());
}
if (ds.Tables[0].Rows[0]["create_time"].ToString() != "")
{
model.create_time = DateTime.Parse(ds.Tables[0].Rows[0]["create_time"].ToString());
}
if (ds.Tables[0].Rows[0]["type_id"].ToString() != "")
{
model.type_id = int.Parse(ds.Tables[0].Rows[0]["type_id"].ToString());
}
return(model);
}
else
{
return(null);
}
}
/// <summary>
/// �õ�һ������ʵ��
/// </summary>
public Mxm.Model.message GetModel(int mid)
{
StringBuilder strSql=new StringBuilder();
strSql.Append("select mid,title,content,parent_id,create_time,type_id from message ");
strSql.Append(" where mid=@mid ");
SqlParameter[] parameters = {
new SqlParameter("@mid", SqlDbType.Int,4)};
parameters[0].Value = mid;
Mxm.Model.message model=new Mxm.Model.message();
DataSet ds=DbHelperSQL.Query(strSql.ToString(),parameters);
if(ds.Tables[0].Rows.Count>0)
{
if(ds.Tables[0].Rows[0]["mid"].ToString()!="")
{
model.mid=int.Parse(ds.Tables[0].Rows[0]["mid"].ToString());
}
model.title=ds.Tables[0].Rows[0]["title"].ToString();
model.content=ds.Tables[0].Rows[0]["content"].ToString();
if(ds.Tables[0].Rows[0]["parent_id"].ToString()!="")
{
model.parent_id=int.Parse(ds.Tables[0].Rows[0]["parent_id"].ToString());
}
if(ds.Tables[0].Rows[0]["create_time"].ToString()!="")
{
model.create_time=DateTime.Parse(ds.Tables[0].Rows[0]["create_time"].ToString());
}
if (ds.Tables[0].Rows[0]["type_id"].ToString() != "")
{
model.type_id = int.Parse(ds.Tables[0].Rows[0]["type_id"].ToString());
}
return model;
}
else
{
return null;
}
}
