Question

“System.ArgumentException”类型的未经处理的异常出现在 System.Data.dll 中。

做的手号码归属地查询，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.Windows.Forms;
using System.IO;
using System.Configuration;
using System.Data.SqlClient;
//using System.Data.SqlClient;

namespace 手机地址归属地查询
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void btnImport_Click(object sender, EventArgs e)
{
FolderBrowserDialog dlg = new FolderBrowserDialog();
if (dlg.ShowDialog() != DialogResult.OK)
{
return;
}
string path = dlg.SelectedPath;

string connStr = ConfigurationManager.ConnectionStrings["ConnStr"].ConnectionString;
using (SqlConnection conn = new SqlConnection(connStr))
{
conn.Open();
using (SqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText = "delete from T_Numbers";
cmd.ExecuteNonQuery();

}
}

string[] files = Directory.GetFiles(path, "*.txt", SearchOption.AllDirectories);

foreach(string file in files)
{
string 运营商名称 = Path.GetFileNameWithoutExtension(file);
MessageBox.Show(运营商名称);
string[] lines = File.ReadAllLines(file, Encoding.Default);
foreach (string line in lines)
{
MessageBox.Show(line);
}
}
}

private void Form1_Load(object sender, EventArgs e)
{

}
}
}

Answer 1

写得很明白，连接字符串有问题！将配置文件中连接数据库的字符串贴出来看看

追问

追答

ntegrated Security=Ture:User Instance=True

：改成分号

Answer 2

请检查连接字符串 估计是有问题的