尝试将新记录插入Access数据库时出现SQL语法错误

Question

I have a simple asp.net form for an individual to fill out, and the code I used on this particular page works in several other locations, but this page is giving me an issue.

It's saying there is a syntax error in the INSERT statement. Can you see anything wrong with it?

The click event code:

cmdInsert.CommandText = "INSERT INTO Position (Com_ID, Stu_ID, Pos_StartDate, Pos_Type, Pos_Description, Pos_Title) VALUES (' " & ddlCompany.SelectedValue & " ', ' " & ddlStudent.SelectedValue & " ', #" & CalStartDate.SelectedDate.Date & "#, ' " & ddlPositionType.SelectedValue & " ', ' " & txtDescription.Text & " ', ' " & txtPositionTitle.Text & " ');"

'MsgBox(cmdInsert.CommandText)
cmdInsert.CommandType = CommandType.Text
cmdInsert.Connection = cnnOLEDB
cmdInsert.ExecuteNonQuery()

txtPositionTitle.Text = ""
txtDescription.Text = "Record inserted."
CalStartDate.SelectedDates.Clear()
cmdInsert.Dispose()

The data captured from the form lines up with the data type in the database. Any ideas?

Here's the stack trace:

[OleDbException (0x80040e14): Syntax error in INSERT INTO statement.]
   System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(OleDbHResult hr) +1081356
   System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(tagDBPARAMS dbParams, Object& executeResult) +247
   System.Data.OleDb.OleDbCommand.ExecuteCommandText(Object& executeResult) +194
   System.Data.OleDb.OleDbCommand.ExecuteCommand(CommandBehavior behavior, Object& executeResult) +58
   System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) +167
   System.Data.OleDb.OleDbCommand.ExecuteNonQuery() +113
   Tiger_Recruiting.WebForm3.btnSaveStudentRecord_Click(Object sender, EventArgs e) in C:\Users\Garrett\Downloads\Tiger Recruiting(3)\Tiger Recruiting(3)\Tiger Recruiting(3)\Tiger Recruiting\Tiger Recruiting\position.aspx.vb:28
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +141
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +149
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +39
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +37
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +87
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4225

Answer 1

The word POSITION is a reserved keyword in MS-Access-Jet.
You use it for a table name thus you need to encapsulate it with square brackets

cmdInsert.CommandText = "INSERT INTO [Position] ....... 

A part from this, your code is very bad. Do not use string cancatenation to build sql commands.
This practice leads to syntax error when in your input there is a single quote or do you have other fields that require a particular formatting of the input value. But the worst of all is the problem of Sql Injection Look here for a funny explanation

So your code should be written in this way:

cmdInsert.CommandText = "INSERT INTO [Position] (Com_ID, Stu_ID, Pos_StartDate, Pos_Type, " + 
                        "Pos_Description, Pos_Title) VALUES " + 
                        "(?,?,?,?,?,?)"
cmdInsert.Parameters.AddWithValue("@p1",ddlCompany.SelectedValue)
cmdInsert.Parameters.AddWithValue("@p2",ddlStudent.SelectedValue)
cmdInsert.Parameters.AddWithValue("@p3",CalStartDate.SelectedDate.Date)
cmdInsert.Parameters.AddWithValue("@p4",ddlPositionType.SelectedValue)
cmdInsert.Parameters.AddWithValue("@p5",txtDescription.Text)
cmdInsert.Parameters.AddWithValue("@p6",txtPositionTitle.Text)
cmdInsert.Connection = cnnOLEDB
cmdInsert.ExecuteNonQuery()