[英]Cannot write to a Microsoft Access file using SQL (OLEDB) C#
I understand that this may be considered a duplicate question, but I am at an impasse and i do not know what it is I am doing wrong, I need help. 我知道这可能是一个重复的问题,但是我陷入了僵局,我不知道这是错的,我需要帮助。 The duplicate question said to use OLEDB in order to write to the Microsoft Access file, where as before I was using the SQL connection to accomplish my task.
重复的问题是说要使用OLEDB来写入Microsoft Access文件,就像我以前使用SQL连接来完成任务一样。 As far as i can tell there are no syntax, logic, or runtime errors and Visual Studios doesnt have an issue either.
据我所知,没有语法,逻辑或运行时错误,Visual Studio也没有问题。
When i run the code and go to add a new entry to the Microsoft Access Database Table, it says it worked, but when I go and look at the file there is NOTHING there. 当我运行代码并去向Microsoft Access数据库表添加新条目时,它说它起作用了,但是当我去查看文件时,那里什么也没有。 Someone please help me, I have goe through all the links, all the web pages, all the search engines, and I dont know what is wrong.
有人请帮助我,我已经遍历了所有链接,所有网页,所有搜索引擎,但我不知道出什么问题了。 I would love to learn what is wrong and how to fix it so I wont ever have to ask for help again.
我很想学习哪里出了问题以及如何解决它,因此我不再需要寻求帮助。
Currently I am a college student and I am working on a team assignment. 目前,我是一名大学生,正在从事团队任务。 Our task, is to create a window that will take input from a user and then add it as a entry into an Microsoft Access File as if it were a SQL database.
我们的任务是创建一个窗口,该窗口将接收来自用户的输入,然后将其作为条目添加到Microsoft Access File中,就好像它是SQL数据库一样。
The issue we are having is that we are trying to add the new entry to a local Microsoft Access file under the table named Artist. 我们遇到的问题是我们试图将新条目添加到名为Artist的表下的本地Microsoft Access文件中。 I have connected to an actual SQL server before and no one else in my group has, even worse no one has done this with using a Microsoft Access file on our PC either.
我以前已经连接到一台实际的SQL服务器,并且我的团队中没有其他人连接过,更糟糕的是,也没有人通过在PC上使用Microsoft Access文件来做到这一点。
I have added the Database (Microsoft Access File) in Visual Studios using the Database Configuration Wizard. 我已经使用数据库配置向导在Visual Studios中添加了数据库(Microsoft Access文件)。 At first I was using straight SQL do to this and then i was told i need to use OLEDB in order to do this.
最初,我使用直接的SQL来做到这一点,然后被告知我需要使用OLEDB才能做到这一点。 SO I have implemented in the code and for some reason I still cannot get it to work.
所以我已经在代码中实现了,由于某种原因,我仍然无法使其正常工作。 If anyone can give me a hand and tell me what it is I am doing wrong, I would greatly appreciate it.
如果有人可以帮助我并告诉我我做错了什么,我将不胜感激。
Details that I believe are important for anyone to help me: 我认为对任何人都有帮助的重要细节:
The name of the table I am attempting to write a new entry to: Artist 我正尝试将新条目写入的表的名称:Artist
Name of the Microsoft Access File: Kays.accdb Microsoft Access文件的名称:Kays.accdb
Location of the Microsoft Access file: C:\\KayDB\\Kays.accdb (local machine) Microsoft Access文件的位置:C:\\ KayDB \\ Kays.accdb(本地计算机)
Once again I would greatly appreciate any help that anyone can give me. 再一次,我将非常感谢任何人都能给我的帮助。 I really am curious as to why the code is not working, please help me understand.
我真的很好奇为什么代码无法正常工作,请帮助我理解。
My code is as follows: 我的代码如下:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.OleDb;
namespace Kay
{
public partial class Kay_Green : Form
{
string Username,Fname, Mname, Lname, streetaddress, city, phonenumber, emailaddress, zipcode, taxIDnummber, state;
string[,] SQLTable = new string[0, 10];
public Kay_Green()
{
InitializeComponent();
}
private void btnSave_Click(object sender, EventArgs e)
{//Save Button
/*Upon clicking the save button, gather all info and save it into an temp array.
Then send it to the SQL database.*/
/*The order of the data in the array will be the same order in the SQL table.*/
Fname = tbFirstName.Text;
Mname = tbMiddleInitial.Text;
Lname = tbLastName.Text;
streetaddress = tbStreet.Text;
city = tbCity.Text;
state = cbState.Text;
phonenumber = tbPhoneNumber.Text;
emailaddress = tbEmailAddress.Text;
zipcode = tbZipCode.Text;
taxIDnummber = tbTaxID.Text;
Username = tbUserName.Text;
/*SQLTable[0,0] = taxIDnummber;
SQLTable[0,1] = Fname;
SQLTable[0,2] = Mname;
SQLTable[0,3] = Lname;
SQLTable[0,4] = streetaddress;
SQLTable[0,5] = city;
SQLTable[0,6] = state;
SQLTable[0,7] = zipcode;
SQLTable[0,8] = phonenumber;
SQLTable[0,9] = emailaddress;*/
/*Below is the details for the SQL connection*/
string connectstring="Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\\KayDB\\Kays.accdb";
OleDbConnection connection=new OleDbConnection(connectstring);
OleDbCommand command;
OleDbDataAdapter adapter;
DataTable dt = new DataTable();
string sql ="Insert into ARTIST values ('" + taxIDnummber + "','"
+ emailaddress + "','" + Fname + "','" + Mname + "','"
+ Lname + "','" + phonenumber+"','"+ Username + "','"
+ streetaddress + "','" + city + "','" +state+ "','"
+ zipcode + "')";
try
{
connection.Open();
command = new OleDbCommand(sql, connection);
MessageBox.Show("Connection Open And data added to table! ");
connection.Close();
}
catch (Exception ex)
{
MessageBox.Show("Can not open connection ! " + ex.StackTrace.ToString());
}
/*Above is the details for the SQL connection*/
}
private void btnCancel_Click(object sender, EventArgs e)
{//Cancel Button
tbCity.Clear();
tbEmailAddress.Clear();
tbFirstName.Clear();
tbLastName.Clear();
tbMiddleInitial.Clear();
tbPhoneNumber.Clear();
tbStreet.Clear();
tbTaxID.Clear();
tbZipCode.Clear();
tbUserName.Clear();
Close();//Go back to switchboard from here
}
private void btnClear_Click(object sender, EventArgs e)
{//Clear button
tbCity.Clear();
tbEmailAddress.Clear();
tbFirstName.Clear();
tbLastName.Clear();
tbMiddleInitial.Clear();
tbPhoneNumber.Clear();
tbStreet.Clear();
tbTaxID.Clear();
tbZipCode.Clear();
tbUserName.Clear();
}
}
} }
This code 此代码
command = new OleDbCommand(sql, connection);
sets up a command but does not run it 设置命令但不运行
you need to run this afterwards: 您需要随后运行此命令:
command.ExecuteNonQuery();
This has nothing to do with connection strings 这与连接字符串无关
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.