protected void btnSave_Click(object sender, EventArgs e)
{
string strErr = "";
if (this.txtusername.Text.Trim().Length == 0)
{
strErr += "username不能为空！\\n";
}
if (!PageValidate.IsNumber(txtage.Text))
{
strErr += "age格式错误！\\n";
}
if (this.txtaddr.Text.Trim().Length == 0)
{
strErr += "addr不能为空！\\n";
}
if (strErr != "")
{
MessageBox.Show(this, strErr);
return;
}
string username = this.txtusername.Text;
int age = int.Parse(this.txtage.Text);
string addr = this.txtaddr.Text;
ncu.mao.Model.t_user model = new ncu.mao.Model.t_user();
model.username = username;
model.age = age;
model.addr = addr;
ncu.mao.BLL.t_user bll = new ncu.mao.BLL.t_user();
bll.Add(model);
Maticsoft.Common.MessageBox.ShowAndRedirect(this, "保存成功！", "add.aspx");
}
/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(ncu.mao.Model.t_user model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update t_user set ");
strSql.Append("username=@username,");
strSql.Append("age=@age,");
strSql.Append("addr=@addr");
strSql.Append(" where userid=@userid");
SqlParameter[] parameters =
{
new SqlParameter("@username", SqlDbType.VarChar, 50),
new SqlParameter("@age", SqlDbType.Int, 4),
new SqlParameter("@addr", SqlDbType.NVarChar, 50),
new SqlParameter("@userid", SqlDbType.Int, 4)
};
parameters[0].Value = model.username;
parameters[1].Value = model.age;
parameters[2].Value = model.addr;
parameters[3].Value = model.userid;
int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 增加一条数据
/// </summary>
public int Add(ncu.mao.Model.t_user model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into t_user(");
strSql.Append("username,age,addr)");
strSql.Append(" values (");
strSql.Append("@username,@age,@addr)");
strSql.Append(";select @@IDENTITY");
SqlParameter[] parameters =
{
new SqlParameter("@username", SqlDbType.VarChar, 50),
new SqlParameter("@age", SqlDbType.Int, 4),
new SqlParameter("@addr", SqlDbType.NVarChar, 50)
};
parameters[0].Value = model.username;
parameters[1].Value = model.age;
parameters[2].Value = model.addr;
object obj = DbHelperSQL.GetSingle(strSql.ToString(), parameters);
if (obj == null)
{
return(0);
}
else
{
return(Convert.ToInt32(obj));
}
}
private void ShowInfo(int userid)
{
ncu.mao.BLL.t_user bll = new ncu.mao.BLL.t_user();
ncu.mao.Model.t_user model = bll.GetModel(userid);
this.lbluserid.Text = model.userid.ToString();
this.txtusername.Text = model.username;
this.txtage.Text = model.age.ToString();
this.txtaddr.Text = model.addr;
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public ncu.mao.Model.t_user DataRowToModel(DataRow row)
{
ncu.mao.Model.t_user model = new ncu.mao.Model.t_user();
if (row != null)
{
if (row["userid"] != null && row["userid"].ToString() != "")
{
model.userid = int.Parse(row["userid"].ToString());
}
if (row["username"] != null)
{
model.username = row["username"].ToString();
}
if (row["age"] != null && row["age"].ToString() != "")
{
model.age = int.Parse(row["age"].ToString());
}
if (row["addr"] != null)
{
model.addr = row["addr"].ToString();
}
}
return(model);
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public ncu.mao.Model.t_user GetModel(int userid)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select top 1 userid,username,age,addr from t_user ");
strSql.Append(" where userid=@userid");
SqlParameter[] parameters =
{
new SqlParameter("@userid", SqlDbType.Int, 4)
};
parameters[0].Value = userid;
ncu.mao.Model.t_user model = new ncu.mao.Model.t_user();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}
