`OleDbConnection connect = new OleDbConnection(connectionString);
connect.Open();
string lastName = tBoxSurname.Text;
OleDbDataAdapter adapter = new OleDbDataAdapter(@"SELECT * FROM Players WHERE LastName=" + lastName, connect);
DataSet dataset = new DataSet();
adapter.Fill(dataset, "Players");
dataGridView1.DataSource = dataset;
dataGridView1.DataMember = "Players";
connect.Close();`
我不明白为什么它一直给出这个问题。我寻找不同的解决方案并尝试了很多,但我不断遇到同样的问题。如果有人可以解释一下发生了什么,因为我最近开始学习数据库。
试试这个:
OleDbDataAdapter adapter = new OleDbDataAdapter();
OleDbCommand command = new OleDbCommand("SELECT * FROM Players WHERE LastName = ?", connect);
command.Parameters.Add("LastName", OleDbType.VarChar).Value = tBoxSurname.Text;
adapter.SelectCommand = command;
下次请以片段而不是图片的形式发布您的代码! :)