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我得到這個錯誤:」初始化字符串的格式不符合從索引0開始的規範。「
Format of the initialization string does not conform to specification starting at index 0.
我的代碼是:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Security.Cryptography;
using System.Data.OleDb;
using System.Configuration;
namespace LibrarySystem
{
public partial class PIDD : Form
{
public PIDD()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
this.Close();
frmMed Med = new frmMed();
Med.Show();
var conn = new SqlConnection("ConnectionString");
//var command = new SqlCommand("Patient.dbo.P_ID", connection);
var command = new SqlCommand("SELECT P_ID FROM Patient WHERE id='" + textBox1.Text + "",connection);
connection.Open();
var reader = command.ExecuteReader();
if (reader.Read())
{
textBox1.Text = reader["id"].ToString();
}
else
{
// No entry found
}
connection.Close();
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
public SqlConnection connection { get; set; }
}
}
我想寫已經存在於數據庫ID和檢查ID是否正確,,然後顯示它在明年fram ,,
沒有什麼有意義這裏。問題是什麼?你有什麼錯誤信息(以及代碼中的哪些地方會發生?)什麼是frmMed,爲什麼在點擊時關閉PIDD表單?你在哪裏寫什麼? – Amit
'SqlConnection(「ConnectionString」);'?它是你的實際代碼還是隨機假樣本?如果尋找調試幫助,你需要提供 - 代碼,確切的錯誤信息與它發生的位置,預期和觀察到的行爲。請注意,代碼的子文件格式可能會爲您賺取一些降價... –