?
Solved

Error binding Access table to dropdown box in ASP.Net

Posted on 2009-04-01
10
Medium Priority
?
587 Views
Last Modified: 2012-05-06
I get this error even though there is a column "Employees_Name"
System.Web.HttpException: DataBinding: 'System.Data.Common.DataRecordInternal' does not contain a property with the name 'Employees_Name'.

Is there something wrong with my code?
// Code on Button
    <asp:DropDownList ID="ddFacilitator" AppendDataBoundItems = "true" runat="server">
    </asp:DropDownList>
 
//Code Behind
        Dim strQuerydd As String = "SELECT Employees_Name FROM Empname"
        Dim cmdSearchdd As New OleDbDataAdapter(strQuerydd, dbConn)
 
        Dim readerdd As OleDbDataReader
 
        Try
            'dbConn.Open()
            readerdd = cmdSearch.SelectCommand.ExecuteReader()
 
 
            ddFacilitator.DataSource = readerdd
            ddFacilitator.DataTextField = "EmpName"
            ddFacilitator.DataValueField = "Employees_Name"
            ddFacilitator.DataBind()
 
 
        Catch exdd As Exception
            Response.Write(exdd)
        End Try
        readerdd.Close()
        dbConn.Close()

Open in new window

0
Comment
Question by:ITHelper80
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 6
  • 4
10 Comments
 
LVL 8

Expert Comment

by:JRockFL
ID: 24045879
This looks incorrect
ddFacilitator.DataTextField = "EmpName"

That is your table name.
Try
ddFacilitator.DataTextField = " Employees_Name"
0
 
LVL 6

Author Comment

by:ITHelper80
ID: 24045892
Hey JRock....Its been a while..what 3 hours? lol

I should just send you the questions directly.

I tired that and got a different error message
System.Web.HttpException: DataBinding: 'System.Data.Common.DataRecordInternal' does not contain a property with the name 'Employees_Name'. at System.Web.UI.DataBinder.GetPropertyValue(Object container, String propName) at System.Web.UI.DataBinder.GetPropertyValue(Object container, String propName, String format) at System.Web.UI.WebControls.ListControl.PerformDataBinding(IEnumerable dataSource) at System.Web.UI.WebControls.ListControl.OnDataBinding(EventArgs e) at System.Web.UI.WebControls.ListControl.PerformSelect() at System.Web.UI.WebControls.BaseDataBoundControl.DataBind() at Facilitator.btnSearch_Click(Object sender, EventArgs e) in H:\Work Web Dev\Visions\Facilitator.aspx.vb:line 72 

Open in new window

0
 
LVL 8

Expert Comment

by:JRockFL
ID: 24045894
The other thing that catches my eye might be

readerdd = cmdSearch.SelectCommand.ExecuteReader()

Try
readerdd = cmdSearch.ExecuteReader()
0
NFR key for Veeam Backup for Microsoft Office 365

Veeam is happy to provide a free NFR license (for 1 year, up to 10 users). This license allows for the non‑production use of Veeam Backup for Microsoft Office 365 in your home lab without any feature limitations.

 
LVL 6

Author Comment

by:ITHelper80
ID: 24045905
ASP.Net 3.5 wont let me do that.

It says ExecuteReader is not a member of OLEDBDataAdapter

The error goes away with the SelectCommand
0
 
LVL 8

Expert Comment

by:JRockFL
ID: 24045934
Sorry, I have not used OleDbDataAdapter in 3.5

Hmmmm
You are positive Employees_Name is the correct column name?

Maybe an alias would work

Dim strQuerydd As String = "SELECT Employees_Name As Name FROM Empname"
            ddFacilitator.DataTextField = "Name"
            ddFacilitator.DataValueField = "Name"
0
 
LVL 8

Expert Comment

by:JRockFL
ID: 24045941
'dbConn.Open()

The connection is closed?
dbConn.Open()
0
 
LVL 8

Expert Comment

by:JRockFL
ID: 24045955
Even though using a reader is a good choice, so can be a datatable.

    Private Sub LoadDropDowns()
        Dim dbConn As OleDbConnection
        Dim strQuerydd As String = "SELECT Employees_Name FROM Empname"
        Dim command As New OleDbCommand(strQuerydd, dbConn)
        Dim da As New OleDbDataAdapter(command)
        Dim dt As New DataTable()
 
        Try
 
            cmdSearchdd.Fill(dt)
 
            ddFacilitator.DataSource = dt
            ddFacilitator.DataTextField = "Employees_Name"
            ddFacilitator.DataValueField = "Employees_Name"
            ddFacilitator.DataBind()
 
 
        Catch exdd As Exception
            Response.Write(exdd)
        End Try
 
    End Sub

Open in new window

0
 
LVL 6

Author Comment

by:ITHelper80
ID: 24045979
The ddConn.Open() is commented out. Here is my complete code behind

Also there is my DB...just in case i may be missing something
Imports System.Data.OleDb
Partial Class Facilitator
    Inherits System.Web.UI.Page
    Private dbConn As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\Visions_DB.mdb;Persist Security Info=False;")
 
 
    Protected Sub btnSearch_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSearch.Click
 
 
        Dim strQuery As String = "SELECT Vis_Num,Status,Employee,Present_Method,Proposed_Method,Validator,Notes,ValDate FROM Data WHERE Vis_Num = ?"
        Dim cmdSearch As New OleDbDataAdapter(strQuery, dbConn)
 
        'cmdSearch.SelectCommand.Parameters.AddWithValue("Vis_Num", "%" & txtSearch.Text.ToString & "%")
        cmdSearch.SelectCommand.Parameters.AddWithValue("Vis_Num", CInt(txtSearch.Text))
        Dim reader As OleDbDataReader
 
        Try
            dbConn.Open()
            reader = cmdSearch.SelectCommand.ExecuteReader()
 
            If IsNothing(reader) = False Then
 
                txtError.Visible = True
                txtVisNum.Text = ""
                txtName.Text = ""
                txtName.Text = ""
                txtPresent.Text = ""
                txtProposed.Text = ""
                ddstatus.SelectedValue = ""
 
            End If
 
            While reader.Read()
 
                If Not reader("Vis_Num") Is DBNull.Value Then
                    txtVisNum.Text = reader("Vis_Num").ToString()
                    txtName.Text = reader("Employee").ToString()
                    txtPresent.Text = reader("Present_Method").ToString()
                    txtProposed.Text = reader("Proposed_Method").ToString()
                    'ddstatus.DataSource = reader
                    'ddstatus.DataValueField = "Status"
                    'ddstatus.DataTextField = "Data"
                    'ddstatus.Items.Insert(0, New ListItem("-- Status --"))
                    'ddstatus.DataBind()
 
                    txtError.Visible = False
                End If
 
            End While
 
        Catch ex As Exception
 
            Response.Write(ex)
 
        End Try
 
        reader.Close()
 
        Dim strQuerydd As String = "SELECT Employees_Name as Name FROM Empname"
        Dim cmdSearchdd As New OleDbDataAdapter(strQuerydd, dbConn)
 
        Dim readerdd As OleDbDataReader
 
        Try
            'dbConn.Open()
            readerdd = cmdSearch.SelectCommand.ExecuteReader()
 
 
            ddFacilitator.DataSource = readerdd
            ddFacilitator.DataTextField = "Name"
            ddFacilitator.DataValueField = "Name"
            ddFacilitator.DataBind()
 
 
        Catch exdd As Exception
            Response.Write(exdd)
        End Try
        readerdd.Close()
        dbConn.Close()
    End Sub
End Class

Open in new window

Visions-DB.mdb
0
 
LVL 8

Accepted Solution

by:
JRockFL earned 2000 total points
ID: 24046039
This part looks incorrect
readerdd = cmdSearch.SelectCommand.ExecuteReader()
That is the commmand that is higher up in the code

i think you want the cmdSearchdd command
readerdd = cmdSearchdd.SelectCommand.ExecuteReader()

I hope that does it....my benadryl is starting to kick in.
if not i will be back in the am
0
 
LVL 6

Author Comment

by:ITHelper80
ID: 24046081
Sweet, once again you come to the rescue.

Thanks, Im sure we will speak tomorrow ;)
0

Featured Post

What Is Blockchain Technology?

Blockchain is a technology that underpins the success of Bitcoin and other digital currencies, but it has uses far beyond finance. Learn how blockchain works and why it is proving disruptive to other areas of IT.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The Windows Phone Theme Colours is a tight, powerful, and well balanced palette. This tiny Access application makes it a snap to select and pick a value. And it doubles as an intro to implementing WithEvents, one of Access' hidden gems.
Code that checks the QuickBooks schema table for non-updateable fields and then disables those controls on a form so users don't try to update them.
What’s inside an Access Desktop Database. Will look at the basic interface, Navigation Pane (Database Container), Tables, Queries, Forms, Report, Macro’s, and VBA code.
In Microsoft Access, learn different ways of passing a string value within a string argument. Also learn what a “Type Mis-match” error is about.
Suggested Courses
Course of the Month10 days, 22 hours left to enroll

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question