摘要： Form2public partial class Form2 : Form{ public string str; public Form2() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { str = textBox1.Text; Form3 f3 = new Form3(); f3.ShowDialog(this); }}Form3public partial class... 阅读全文

摘要： public Form1(){ InitializeComponent(); //连接数据库 string str = "Data Source=IP;Initial Catalog=数据库名称;Persist Security Info=True;User ID=**; Password="; ConnectDatebase(str); }void ConnectDatebase(string sql){ SqlConnection connection = new SqlConnection(); connection.ConnectionString = sql;.. 阅读全文