Question

我创建了连接字符串：

connection.ConnectionString = @"Provider=abcdef; Server=123....; Database=abc; User Id=user; Password=xyz";

效果很好。我想用变量交换密码：

connection.ConnectionString = @"Provider=abcdef; Server=123....; Database=abc; User Id=user; Password="+textBox1.Text;

我的程序显示错误：

用户登录失败：用户...（textBox.Text =＆＃34; xyz＆＃34;）

你知道如何正确地用变量交换密码吗？

Answer 1

使用SqlConnectionStringBuilder课程。

static void Main()
{
    SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder(connectionString);
    builder.Password = "YourNewPassword";
    string newConnectionString = builder.ConnectionString;
}

Answer 2

使用SqlConnectionStringBuilder：

var csb = new SqlConnectionStringBuilder(<<your connection string>>);
csb.Password = "xyz";
string connectionString = csb.ConnectionString;

Answer 3

connection.ConnectionString = string.Format("Provider=abcdef; Server=123....; Database=abc; User Id=user; Password={0}", textBox1.Text);

Answer 4

你可以试试这个..

string strTextBox;

private void textBox1_TextChanged(object sender, EventArgs e)
{
    strTextBox= textBox1.Text;
}

您使用strTextBox而不是textBox1.Text作为密码。

ConnectionString中的可变密码

4 个答案: