c# - SqlException '?' 附近的语法不正确

Question

我在查询中遇到 sql 异常:

[SqlException (0x80131904): Incorrect syntax near '?'. Incorrect syntax near the keyword 'User'.]

我做错了什么？这个异常(exception)是什么意思？

protected void Submit_Click(object sender, EventArgs e)
{
    string myConnection = @"Data Source=REDDEVIL;Initial..."

    SqlConnection conn = new SqlConnection(myConnection);

    HttpPostedFile postedFile = FileUpload1.PostedFile;
    string fileName = Path.GetFileName(postedFile.FileName);
    string fileExtension = Path.GetExtension(fileName);

    if (fileExtension.ToLower() == ".jpg" || fileExtension.ToLower() == ".bmp" ||
        fileExtension.ToLower() == ".gif" || fileExtension.ToLower() == ".png")
    {
        Stream stream = postedFile.InputStream;
        BinaryReader binaryReader = new BinaryReader(stream);
        byte[] bytes = binaryReader.ReadBytes((int)stream.Length);

        string query2 = "INSERT INTO Manager (ID,Name,Address,Phone,Cell,Email,DOB,Commission,Comments,Photo,User ID,IsActive) VALUES (?ID,?Name,?Address,?Phone,?Cell,?Email,?DOB,?Commission,?Comments,?Photo,?User_ID,?IsActive)";
        SqlCommand cmd2 = new SqlCommand(query2, conn);
        cmd2.Parameters.AddWithValue("?ID", mgrID.Text);
        cmd2.Parameters.AddWithValue("?Name", Name.Text);
        cmd2.Parameters.AddWithValue("?Address", address.Text);
        cmd2.Parameters.AddWithValue("?Phone", phoneNo.Text);
        cmd2.Parameters.AddWithValue("?Cell", CellNo.Text);
        cmd2.Parameters.AddWithValue("?Email", email.Text);
        cmd2.Parameters.AddWithValue("?DOB", dob.Text);
        cmd2.Parameters.AddWithValue("?Commission", commission.Text);
        cmd2.Parameters.AddWithValue("?Comments", comments.Text);
        cmd2.Parameters.AddWithValue("?Photo", bytes);
        cmd2.Parameters.AddWithValue("?User_ID", System.DBNull.Value);
        cmd2.Parameters.AddWithValue("?IsActive", System.DBNull.Value);
        conn.Open();
        cmd2.ExecuteNonQuery();
        conn.Close();

        Response.Redirect("~/Views/Portal/Dashboard.aspx");
    }
    else
    {
    }
}

任何帮助将不胜感激。

Answer 1

要指定它是一个参数，您应该在 sql 查询中使用 @ 而不是 ?。然后在创建参数时，您也不需要 ?

string query2 = "INSERT INTO Manager (ID,Name,Address,Phone,Cell,Email,DOB,Commission,Comments,Photo,User_ID,IsActive) VALUES (@ID,@Name,@Address,@Phone,@Cell,@Email,@DOB,@Commission,@Comments,@Photo,@User_ID,@IsActive)";

SqlCommand cmd2 = new SqlCommand(query2, conn);
cmd2.Parameters.AddWithValue("ID", mgrID.Text);

---

正如蒂姆在本节中注意到的那样，您正在指定您拥有的字段 ...USER ID,.... - 我假设您缺少一个 _他们俩。 (如果它确实被称为 user 那么请参阅 Tim 对 []

的建议