Question

任何人都可以告诉我错误在哪里，我在cmd.ExecuteNonquery（）处获得错误，即'varchar'附近的语法不正确。 'Type'附近的语法不正确。

 string CS = ConfigurationManager.ConnectionStrings["RelayTestMachine.Properties.Settings.RelayTestConnectionString"].ConnectionString;

        using (SqlConnection con = new SqlConnection(CS))
        {

            SqlCommand cmd = new SqlCommand("INSERT INTO TestValue (Relay Type,Applied Voltage) VALUES(@Relay Type,@Applied Voltage)",con);

            cmd.Parameters.Add("@Relay Type", SqlDbType.VarChar).Value = tbRelayType.Text;

                if (rbtn100.Checked == true)
                {
                    cmd.Parameters.Add("@Applied Voltage", SqlDbType.VarChar).Value = rbtn100.Text;
                }
                if (rbtn75.Checked == true)
                {
                    cmd.Parameters.Add("@Applied Voltage", SqlDbType.VarChar).Value = rbtn75.Text;
                }
                con.Open();

                cmd.ExecuteNonQuery();

        }

Answer 1

尝试使用此插入语句

INSERT INTO TestValue ([Relay Type],[Applied Voltage]) VALUES(@RelayType,@AppliedVoltage)

即，您需要从变量名中删除空格并将列名放在[]

中

Answer 2

从变量名中删除空格，并将[]添加到列名称。

变量名和列名不允许使用空格由中间的空格组成，然后必须用[]或""括起来 INSERT INTO TestValue ([Relay Type],[Applied Voltage]) VALUES(@RelayType,@AppliedVoltage)"

string CS = ConfigurationManager.ConnectionStrings["RelayTestMachine.Properties.Settings.RelayTestConnectionString"].ConnectionString;

        using (SqlConnection con = new SqlConnection(CS))
        {

            SqlCommand cmd = new SqlCommand("INSERT INTO TestValue ([Relay Type],[Applied Voltage]) VALUES(@RelayType,@AppliedVoltage)",con);

            cmd.Parameters.Add("@RelayType", SqlDbType.VarChar).Value = tbRelayType.Text;

                if (rbtn100.Checked == true)
                {
                    cmd.Parameters.Add("@AppliedVoltage", SqlDbType.VarChar).Value = rbtn100.Text;
                }
                if (rbtn75.Checked == true)
                {
                    cmd.Parameters.Add("@AppliedVoltage", SqlDbType.VarChar).Value = rbtn75.Text;
                }
                con.Open();

                cmd.ExecuteNonQuery();

        }

整体就像这样

user == null

'varchar'附近的语法不正确。 'Type'附近的语法不正确

2 个答案: