我想通过保存按钮从以下位置保存数据：
idbox（文本框）-empbox（组合框）-jobbox（组合框）-unitbox（组合框）-
destbox（组合框）-detectivebox（组合框）-statebox（组合框）-
投资日期（日期选择器）-投资结果（文本框）
进入表投资相同的顺序：
id - emp - unit - job - dest - 侦探 - state -investdate -investresult
我尝试了这个并且没有错误，但是当我检查时，表中没有保存任何内容....
我能知道这是什么原因吗？
这是我试过的代码
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.OleDb;
namespace beta_2
{
public partial class Dentry_main : Form
{
OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=beta2.mdb;");
OleDbDataAdapter da;
DataSet ds = new DataSet();
OleDbCommand com = new OleDbCommand();
string sql;
public Dentry_main()
{
InitializeComponent();
}
private void Dentry_main_Load(object sender, EventArgs e)
{
// TODO: This line of code loads data into the 'beta2DataSet.stateinside' table. You can move, or remove it, as needed.
this.stateinsideTableAdapter.Fill(this.beta2DataSet.stateinside);
// TODO: This line of code loads data into the 'beta2DataSet.detectivestbl' table. You can move, or remove it, as needed.
this.detectivestblTableAdapter.Fill(this.beta2DataSet.detectivestbl);
// TODO: This line of code loads data into the 'beta2DataSet.departments' table. You can move, or remove it, as needed.
this.departmentsTableAdapter.Fill(this.beta2DataSet.departments);
// TODO: This line of code loads data into the 'beta2DataSet.units' table. You can move, or remove it, as needed.
this.unitsTableAdapter.Fill(this.beta2DataSet.units);
// TODO: This line of code loads data into the 'beta2DataSet.employees' table. You can move, or remove it, as needed.
this.employeesTableAdapter.Fill(this.beta2DataSet.employees);
}
private void button1_Click(object sender, EventArgs e)
{
conn.Open();
com.Connection = conn;
sql = "INSERT INTO investinside([id],[emp],[job],[unit],[dest],[detective],[state],[investdate],[investresult])VALUES(@id,@emp,@job,@unit,@dest,@detective,@state,@investdate,@investresult)";
com.CommandText = sql;
com.Parameters.Clear();
com.Parameters.AddWithValue("@id", idbox.Text);
com.Parameters.AddWithValue("@emp", empbox.Text);
com.Parameters.AddWithValue("@job", jobbox.Text);
com.Parameters.AddWithValue("@unit", unitbox.Text);
com.Parameters.AddWithValue("@dest", destbox.Text);
com.Parameters.AddWithValue("@detective", detectivebox.Text);
com.Parameters.AddWithValue("@state", statebox.Text);
com.Parameters.AddWithValue("@investdate", investdatebox.Text);
com.Parameters.AddWithValue("@investresult", investresultbox.Text);
com.ExecuteNonQuery();
MessageBox.Show("success");
conn.Close();
}
private void button3_Click(object sender, EventArgs e)
{
this.Close();
}
}
}