这基本上是代码
string query = $"SELCET * FROM [Purchase] WHERE UserID = {userID} AND ProductSerialNumber = {productSerialNum}";
using(SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
SqlCommand command = new SqlCommand(query, connection);
SqlDataReader reader = command.ExecuteReader();
return reader.HasRows;
}
而且是的,我只是试图运行它,在“ SqlDataReader reader = command.ExecuteReader();”中崩溃了。编辑:yh解决了
您有错别字,而是写了SELCET
而不是SELECT
。