'varchar' 附近的语法不正确。 'Type' 附近的语法不正确

Question

谁能告诉我错误在哪里，我在 cmd.ExecuteNonquery() 处遇到错误，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

从变量名中删除空格并在列名中添加 []。

White Spaces are not allowed in variable name and if column names consist of spaces in between then they must be enclosed with [] or ""

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

整个过程是这样的

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();

        }

Answer 2

尝试使用这个插入语句

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

'varchar' 附近的语法不正确。 'Type' 附近的语法不正确

Incorrect syntax near 'varchar'. Incorrect syntax near 'Type'

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