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ASP.NET app: Server Error in '/LibrarySite' Application.

Expert 100+
P: 2,364
Hey Gang!

What do you make of this error:

Server Error in '/LibrarySite' Application.

Conversion from type 'Field' to type 'String' is not valid.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidCastException: Conversion from type 'Field' to type 'String' is not valid.

Source Error:

The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:

1. Add a "Debug=true" directive at the top of the file that generated the error. Example:

<%@ Page Language="C#" Debug="true" %>


2) Add the following section to the configuration file of your application:

<compilation debug="true"/>

Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.

Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.

Stack Trace:

[InvalidCastException: Conversion from type 'Field' to type 'String' is not valid.]
Microsoft.VisualBasic.CompilerServices.Conversions .ToString(Object Value) +625
ASP.mysendform_aspx.Button2_Click(Object sender, EventArgs e) +309
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +75
System.Web.UI.WebControls.Button.RaisePostBackEven t(String eventArgument) +97
System.Web.UI.WebControls.Button.System.Web.UI.IPo stBackEventHandler.RaisePostBackEvent(String eventArgument) +7
System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler sourceControl, String eventArgument) +11
System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData) +33
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4921

Version Information: Microsoft .NET Framework Version:2.0.50727.832; ASP.NET Version:2.0.50727.832
I am attempting to read an Access Table, while all seems well in the code, looks like it is asking me to format form fields, what are your thoughts:

Expand|Select|Wrap|Line Numbers
  1. Please forgive, I am still working with the code, I have not commented 
  3.         Dim MyConn, MyPath, RecSet, SequelQuery
  4.         MyPath = "C:\Data_Central.mdb"
  5.         MyConn = CreateObject("ADODB.Connection")
  6.         MyConn.Open("PROVIDER=MICROSOFT.JET.OLEDB.4.0;DATA SOURCE=" & MyPath)
  7.         SequelQuery = "SELECT * FROM Library1 WHERE ItemName LIKE '" & TextBox1.Text & "'"        
  8. RecSet = MyConn.Execute(SequelQuery)
  9.         Do While Not RecSet.EOF
  10.             TextBox1.Text = RecSet.fields("ItemName")
  11.             TextBox2.Text = RecSet.fields("Type")
  12.             TextBox3.Text = RecSet.fields("EmailAddress")
  13.             RecSet.MoveNext()
  14.         Loop
  15.         MyConn.Close()
Seems the only thing stopping me from see good descent data is that error. I have since modified Access database fields to text to correspond somehow to the textboxes on form. I suspect the error is referring to something else, just can quite put my finger on it.

Any input you have, direction is helpful. Thanks!

Have a great week:-)

Jan 14 '08 #1
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