标准表达式中数据类型不匹配
if (Rdbmanager.Checked)
{
string oledcon = ConfigurationManager.ConnectionStrings[ "voteadimin "].ConnectionString;
OleDbConnection conn = new OleDbConnection(oledcon);
conn.Open();
OleDbCommand olecmd = new OleDbCommand();
olecmd.CommandText = "select count(*) from adimin where messager= ' " + userna.Text + " ' " + "and pwdm= ' " + passwd.Text + " ' ";
olecmd.Connection = conn;
int summ = Convert.ToInt32(olecmd.ExecuteScalar());
conn.Close();
conn.Dispose();
if (summ> 0)
{
Respons