【发布时间】:2016-06-29 18:38:31
【问题描述】:
我尝试了 3 天使用 entityframework 向我的数据库中添加一行,但我不能:| ..现在我完成了向数据库添加行的所有基本工作......最后我得到了这个错误:
EntityFramework.SqlServer.dll 中出现“System.Data.Entity.Core.EntityCommandExecutionException”类型的未处理异常 - 附加信息:执行命令定义时出错。有关详细信息,请参阅内部异常。
我多次执行数据库但是...!
代码:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.Entity.Validation;
using System.Diagnostics;
namespace WindowsFormsApplication6
{
public partial class BuyForm : Form
{
public BuyForm()
{
InitializeComponent();
}
private void BuyForm_Load(object sender, EventArgs e)
{
}
notebookEntities database = new notebookEntities();
private void buyGridView_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
}
private void BuyForm_Load_1(object sender, EventArgs e)
{
}
private void textBox6_TextChanged(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
buytbl tbl = new buytbl
{
name = bnameTextBox.Text,
price = int.Parse(bpriceTextbox.Text.ToString()),
date = dateTimePicker1.Value,
deadline = dateTimePicker2.Value,
buyername = bbuyerTextBox.Text.ToString(),
count = int.Parse(bcountTextBox.Text.ToString()),
profit = int.Parse(bprofitTextBox.Text.ToString())
};
database.buytbls.Add(tbl);
dataGridView1.DataSource = database.buytbls.ToList();
database.SaveChanges();
}
}
}
还有桌子:
//------------------------------------------------------------------------------
// <auto-generated>
// This code was generated from a template.
//
// Manual changes to this file may cause unexpected behavior in your application.
// Manual changes to this file will be overwritten if the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------
namespace WindowsFormsApplication6
{
using System;
using System.Collections.Generic;
public partial class buytbl
{
public int id { get; set; }
public string name { get; set; }
public int price { get; set; }
public int count { get; set; }
public int profit { get; set; }
public System.DateTime date { get; set; }
public System.DateTime deadline { get; set; }
public string buyername { get; set; }
public string description { get; set; }
}
}
请帮帮我!...
【问题讨论】:
-
“查看内部异常了解详情。” 内部异常说....?
-
能否请您添加内部异常详细信息,因为查看您的代码,很难分辨出什么是破坏。但是您可以尝试一些事情,检查是否是 datetime2 转换错误,因为您正在插入日期,检查您是否将所需的值作为 null 传递。
-
它没有任何内在!
标签: c# .net sql-server entity-framework