public void btnSave_Click(object sender, EventArgs e)
{
string strErr = "";
if (!PageValidate.IsDecimal(txtDensity.Text))
{
strErr += "Density格式错误！\\n";
}
if (!PageValidate.IsDecimal(txtEnthalpy.Text))
{
strErr += "Enthalpy格式错误！\\n";
}
if (strErr != "")
{
MessageBox.Show(this, strErr);
return;
}
decimal Centigrade = decimal.Parse(this.lblCentigrade.Text);
decimal Density = decimal.Parse(this.txtDensity.Text);
decimal Enthalpy = decimal.Parse(this.txtEnthalpy.Text);
WebDemo.Model.WebDemo.Temperature model = new WebDemo.Model.WebDemo.Temperature();
model.Centigrade = Centigrade;
model.Density = Density;
model.Enthalpy = Enthalpy;
WebDemo.BLL.WebDemo.Temperature bll = new WebDemo.BLL.WebDemo.Temperature();
bll.Update(model);
Maticsoft.Common.MessageBox.ShowAndRedirect(this, "保存成功！", "list.aspx");
}
/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(WebDemo.Model.WebDemo.Temperature model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("update Temperature set ");
strSql.Append("Density=@Density,");
strSql.Append("Enthalpy=@Enthalpy");
strSql.Append(" where Centigrade=@Centigrade ");
SqlParameter[] parameters =
{
new SqlParameter("@Density", SqlDbType.Decimal, 9),
new SqlParameter("@Enthalpy", SqlDbType.Decimal, 9),
new SqlParameter("@Centigrade", SqlDbType.Decimal, 9)
};
parameters[0].Value = model.Density;
parameters[1].Value = model.Enthalpy;
parameters[2].Value = model.Centigrade;
int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 增加一条数据
/// </summary>
public bool Add(WebDemo.Model.WebDemo.Temperature model)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("insert into Temperature(");
strSql.Append("Centigrade,Density,Enthalpy)");
strSql.Append(" values (");
strSql.Append("@Centigrade,@Density,@Enthalpy)");
SqlParameter[] parameters =
{
new SqlParameter("@Centigrade", SqlDbType.Decimal, 9),
new SqlParameter("@Density", SqlDbType.Decimal, 9),
new SqlParameter("@Enthalpy", SqlDbType.Decimal, 9)
};
parameters[0].Value = model.Centigrade;
parameters[1].Value = model.Density;
parameters[2].Value = model.Enthalpy;
int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
if (rows > 0)
{
return(true);
}
else
{
return(false);
}
}
private void ShowInfo(decimal Centigrade)
{
WebDemo.BLL.WebDemo.Temperature bll = new WebDemo.BLL.WebDemo.Temperature();
WebDemo.Model.WebDemo.Temperature model = bll.GetModel(Centigrade);
this.lblCentigrade.Text = model.Centigrade.ToString();
this.lblDensity.Text = model.Density.ToString();
this.lblEnthalpy.Text = model.Enthalpy.ToString();
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public WebDemo.Model.WebDemo.Temperature DataRowToModel(DataRow row)
{
WebDemo.Model.WebDemo.Temperature model = new WebDemo.Model.WebDemo.Temperature();
if (row != null)
{
if (row["Centigrade"] != null && row["Centigrade"].ToString() != "")
{
model.Centigrade = decimal.Parse(row["Centigrade"].ToString());
}
if (row["Density"] != null && row["Density"].ToString() != "")
{
model.Density = decimal.Parse(row["Density"].ToString());
}
if (row["Enthalpy"] != null && row["Enthalpy"].ToString() != "")
{
model.Enthalpy = decimal.Parse(row["Enthalpy"].ToString());
}
}
return(model);
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public WebDemo.Model.WebDemo.Temperature GetModel(decimal Centigrade)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select top 1 Centigrade,Density,Enthalpy from Temperature ");
strSql.Append(" where Centigrade=@Centigrade ");
SqlParameter[] parameters =
{
new SqlParameter("@Centigrade", SqlDbType.Decimal, 9)
};
parameters[0].Value = Centigrade;
WebDemo.Model.WebDemo.Temperature model = new WebDemo.Model.WebDemo.Temperature();
DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);
if (ds.Tables[0].Rows.Count > 0)
{
return(DataRowToModel(ds.Tables[0].Rows[0]));
}
else
{
return(null);
}
}
