對不起,問這個問題我知道還有很多其他問題,並試圖使用提供的解決方案,但我無法讓我的代碼工作。感謝您的期待!如在屬性所示連接與視覺工作室中的localdb不兼容
連接字符串:
數據 源=(的LocalDB)\ V11.0; AttachDbFilename =「C:\用戶\雅各布\文檔\ Visual Studio中 \項目\ WindowsFormsApplication2 \ WindowsFormsApplication2 \ ChatDB.mdf「;在app.config中集成 安全=真
連接字符串:
數據 源=(的LocalDB)\ 11.0; AttachDbFilename = | DataDirectory目錄| \ ChatDB.mdf;集成 安全=真
Error: An unhandled exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll
Additional information: Incorrect syntax near the keyword 'User'.
代碼:
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;
//NC-1 More namespaces.
using System.Data.SqlClient;
using System.Configuration;
namespace WindowsFormsApplication2
{
public partial class SignUp : Form
{
string connstr = ConfigurationManager.ConnectionStrings["WindowsFormsApplication2.Properties.Settings.ChatDBConnectionString"].ToString();
public SignUp()
{
InitializeComponent();
}
private void label1_Click(object sender, EventArgs e)
{
}
private void SubmitBtn_Click(object sender, EventArgs e)
{
string Name = NameText.Text;
string Pwd = PwdText.Text;
//make sure they have entered text
if (Name.Length > 0 && Pwd.Length > 0)
{
SqlConnection conn = new SqlConnection(connstr);
//NC-10 try-catch-finally
try
{
//NC-11 Open the connection.
conn.Open();
SqlCommand insert = new SqlCommand();
insert.Connection = conn;
insert.CommandText = "INSERT INTO [User] (Name,Password) VALUES ('" + Name + "','" + Pwd + "')";
insert.ExecuteNonQuery();
MessageBox.Show("Congrats!!!");
}
catch
{
//NC-14 A simple catch.
MessageBox.Show("User was not returned. Account could not be created.");
}
finally
{
//NC-15 Close the connection.
conn.Close();
}
}
//if no text make them enter
else
{
MessageBox.Show("Please enter Text in both fields.");
}
}
}
}
再次感謝你尋找。
檢查你的SQL查詢。 –
如果你在保留關鍵字「User」的周圍沒有方括號,我會期待這個錯誤。你的查詢看起來對我有效。仔細檢查異常和堆棧跟蹤 - 確保它指向上面發佈的代碼(而不是其他查詢)。 –
格蘭特溫尼很不幸,這是解決方案中唯一的查詢,我剛開始使用visual studio和c#。 – tnyN