Question

我收到此错误：

System.Data.SqlClient.SqlException：'关键字'Table'附近的语法不正确。

当我运行程序时;它说错误靠近桌子！

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.SqlClient;

namespace WindowsFormsApp3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string SOURCE = @"Data Source=DESKTOP-K39PU4T\SQLEXPRESS;Initial Catalog=Mohamed;Integrated Security=True";

            SqlConnection CON = new SqlConnection(SOURCE);
            CON.Open();

            MessageBox.Show("DB Connected");

            string SqlSelectQuery = " Select*From Table Where ID ="+ int.Parse(textBox1.Text);

            SqlCommand cmd = new SqlCommand(SqlSelectQuery, CON);
            SqlDataReader dr = cmd.ExecuteReader();

            if (dr.Read())
            {
                textBox2.Text = (dr["Name"].ToString());
                textBox3.Text = (dr["Surname"].ToString());
                textBox4.Text = (dr["Lastname"].ToString());
            }
            else
            {
                textBox1.Text = "";
                textBox2.Text = "";
                textBox3.Text = "";
                textBox4.Text = "";

                MessageBox.Show("No Record Found Please Enter Correct Id");
            }

            CON.Close();
        }
    }
}

我想在SQL Studio中将数据从SQL Server加载到ASP.NET

Answer 1

表是关键词，如果你有一个名为＆＃34;表＆＃34;您可能需要在SQL字符串中使用[Table]表示escape关键字，否则请使用正确的表名而不是Table。你也最好使用参数而不是将字符串连接为sql语句。

string SqlSelectQuery = "Select * From [Table] Where ID =@ID";
SqlCommand cmd = new SqlCommand(SqlSelectQuery, CON);
cmd.Parameters.AddWithValue("@ID", int.Parse(textBox1.Text));

Answer 2

您想从中获取数据的表名是什么？

如果其名称为Table，则将“Select * From Table Where ID =”替换为“Select * From \”Table \“Where ID =” 否则将表替换为实际的表名

将数据从SQL Server数据库加载到C＃

2 个答案: