/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(Ncu.jsj.Model.Student model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update Student set ");
strSql.Append("name=@name,");
strSql.Append("age=@age,");
strSql.Append("pictureurl=@pictureurl");
strSql.Append(" where id=@id");
SqlParameter[] parameters =
{
new SqlParameter("@name", SqlDbType.NChar, 20),
new SqlParameter("@age", SqlDbType.Int, 4),
new SqlParameter("@pictureurl", SqlDbType.NChar, 30),
new SqlParameter("@id", SqlDbType.Int, 4)
};
parameters[0].Value = model.name;
parameters[1].Value = model.age;
parameters[2].Value = model.pictureurl;
parameters[3].Value = model.id;
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.jsj.Model.Student model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into Student(");
strSql.Append("name,age,pictureurl,sex)");
strSql.Append(" values (");
strSql.Append("@name,@age,@pictureurl,@sex)");
strSql.Append(";select @@IDENTITY");
SqlParameter[] parameters =
{
new SqlParameter("@name", SqlDbType.NChar, 20),
new SqlParameter("@age", SqlDbType.Int, 4),
new SqlParameter("@pictureurl", SqlDbType.NChar, 30),
new SqlParameter("@sex", SqlDbType.Bit)
};
parameters[0].Value = model.name;
parameters[1].Value = model.age;
parameters[2].Value = model.pictureurl;
parameters[3].Value = model.sex;
object obj = DbHelperSQL.GetSingle(strSql.ToString(), parameters);
if (obj == null)
{
return(0);
}
else
{
return(Convert.ToInt32(obj));
}
}
protected void btnSave_Click(object sender, EventArgs e)
{
string strErr = "";
if (this.txtname.Text.Trim().Length == 0)
{
strErr += "name不能为空！\\n";
}
if (!PageValidate.IsNumber(txtage.Text))
{
strErr += "age格式错误！\\n";
}
if (this.txtpictureurl.Text.Trim().Length == 0)
{
strErr += "pictureurl不能为空！\\n";
}
if (strErr != "")
{
MessageBox.Show(this, strErr);
return;
}
string name = this.txtname.Text;
int age = int.Parse(this.txtage.Text);
string pictureurl = this.txtpictureurl.Text;
Ncu.jsj.Model.Student model = new Ncu.jsj.Model.Student();
model.name = name;
model.age = age;
model.pictureurl = pictureurl;
Ncu.jsj.BLL.Student bll = new Ncu.jsj.BLL.Student();
bll.Add(model);
Maticsoft.Common.MessageBox.ShowAndRedirect(this, "保存成功！", "add.aspx");
}
private void ShowInfo(int id)
{
Ncu.jsj.BLL.Student bll = new Ncu.jsj.BLL.Student();
Ncu.jsj.Model.Student model = bll.GetModel(id);
this.lblid.Text = model.id.ToString();
this.lblname.Text = model.name;
this.lblage.Text = model.age.ToString();
this.lblpictureurl.Text = model.pictureurl;
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public Ncu.jsj.Model.Student GetModel(int id)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select top 1 id,name,age,pictureurl from Student ");
strSql.Append(" where id=@id");
SqlParameter[] parameters =
{
new SqlParameter("@id", SqlDbType.Int, 4)
};
parameters[0].Value = id;
Ncu.jsj.Model.Student model = new Ncu.jsj.Model.Student();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
if (ds.Tables[0].Rows[0]["id"] != null && ds.Tables[0].Rows[0]["id"].ToString() != "")
{
model.id = int.Parse(ds.Tables[0].Rows[0]["id"].ToString());
}
if (ds.Tables[0].Rows[0]["name"] != null && ds.Tables[0].Rows[0]["name"].ToString() != "")
{
model.name = ds.Tables[0].Rows[0]["name"].ToString();
}
if (ds.Tables[0].Rows[0]["age"] != null && ds.Tables[0].Rows[0]["age"].ToString() != "")
{
model.age = int.Parse(ds.Tables[0].Rows[0]["age"].ToString());
}
if (ds.Tables[0].Rows[0]["pictureurl"] != null && ds.Tables[0].Rows[0]["pictureurl"].ToString() != "")
{
model.pictureurl = ds.Tables[0].Rows[0]["pictureurl"].ToString();
}
return(model);
}
else
{
return(null);
}
}