Unable To Cast Object Of Type XXX To Type YYY
Apr 13, 2010I have a class B that inherit from a class A should I always be able to cast the class A to the classB or are there some situation where this is not possible.
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Invalid Cast Exception Was Unhandled - Unable To Cast Object Of Type 'System.String' To Type 'System.Windows.Forms.TextBox'
Feb 9, 2012Private
Sub cmdExit_Click(ByVal
sender As System.Object,
ByVal e
[code]....
Asp.net - Unable To Cast Object Of Type 'ASP.webform1_aspx' To Type 'System.Web.UI.WebControls.Button'
Jan 28, 2012when view in browser, i got this error: Unable to cast object of type 'ASP.webform1_aspx' to type 'System.Web.UI.WebControls.Button'.
how should i solve this problem?
Line 7: If Not Page.IsPostBack Then
Line 8: Dim rowIndex As Integer = 0
<b>Line 9: Dim btn As Button = DirectCast(sender, Button)</b>
[Code].....
Unable To Cast Object Of Type 'ADODB.InternalField' To Type 'System.String
Apr 19, 2010I had write code (just for learning), the codes :
dim Temp as string
Temp = Recordset("
Table_Field")
but, when I start Debugging the error messages "Unable to cast object of type 'ADODB.InternalField' to type 'System.String"
Unable To Cast Object Of Type 'IMAPI2FS.FsiStreamClass' To Type 'IMAPI2.IStream'
Apr 13, 2011I am implementing IMAPI2 into my vb.net project but ran into a wall. I am getting the message Unable to cast object of type 'IMAPI2FS.FsiStreamClass' to type 'IMAPI2.IStream' when trying to start the burn. I googled around and found this is something that microsoft hasn't fixed.. which basically renders IMAPI2 useless in vb.net.
I found a post on codeproject.com by eric hadden who combined the IMAPI2.dll and IMAPI2fs.dll into an c# interop file. I also see the IBURN interop in microsoft SDK samples. I'd like to use either, but it's in c# and I'm using vb express. Does anyone know a way to get the interop into visual basic or a way around "Unable to cast object of type 'IMAPI2FS.FsiStreamClass' to type 'IMAPI2.IStream'"?
Unable To Cast Object Of Type 'System.IO.FileStream' To Type 'Excel.Application'
Jun 1, 2009I'm having a problem with converting from one source type to a destination type. I have a form with 2 buttons (button 2 uses the OpenFileDialog to have the user open an excel file set to NewFile),(button 1 takes the contents from specific cells in NewFile and arranges them how I need into oXLApp1).
The error I get is "Unable to cast object of type 'System.IO.FileStream' to type 'Excel.Application'." in line 14 of the code below.
Public Class Form1
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
[Code]....
Unable To Cast Object Of Type 'System.String' To Type 'ADODB.Connection'
Mar 19, 2009I'm new to VB 2005, the code below is actualy coded from VB 6 and just converted it to VB 2005. I'm having trouble with line that's on bold letters.In VB 6 this works just ok. By the way the error message is "Unable to cast object of type 'System.String' to type 'ADODB.Connection'." [code]
View 5 RepliesError : Unable To Cast Object Of Type 'ClassA' To Type 'ClassB'
May 24, 2011I can't cast my objects. I get: "Unable to cast object of type 'ClassA' to type 'ClassB'".
The service Class:
Public Class svc_Insp
Implements Isvc_Insp
Public Function Test(ByVal pm_income As ClassC) As String Implements Isvc_Insp.Test
[code]....
Unable To Cast COM Object Of Type 'System.__ComObject' To Class Type?
May 14, 2009Unable to cast COM object of type 'System.__ComObject' to class type 'rjsDocMan.Folder'.Instances of types that represent COM components cannot be cast to types that do not represent COM components; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface.The code where it is flagging the error is:
<div style="color: Black; background-color: White;">
treeview += AddChildren(Session("DocMan").RootFolder)
</div>
[code].....
Unable To Cast Object Of Type 'SZArrayEnumerator' To Type 'WindowsApplication1.myEnumerator'
Dec 18, 2009I saw this thread and I had simple answer in mind. To use custom enumerator class. So I was trying to make one for that guy, which would have one more property to check whether its has reached end or not. It would also provide current position.I'm getting an error "Unable to cast object of type 'SZArrayEnumerator' to type 'WindowsApplication1.myEnumerator'." at the line 6 [see below].However, return type of values.getEnumerator says its IEnumerator. [code]
View 14 RepliesUnable To Cast Object Of Type .objectquery To Type Generic.list
Sep 12, 2011I have a question about ASP.Net, visual basic I have 2 LINQ query's, the first one works, the second one doesnt, produces a
"Unable to cast object of type 'System.Data.Objects.ObjectQuery'1[SelmaV2.Products]' to type 'System.Collections.Generic.List'1[System.String]'.
[Code]....
Unable To Cast Object Of Type X To Type X On Setting DataSource To A Table?
Feb 19, 2012Columns 0 & 1 are filled from a DataAdapter from Access Database and three are added. I had this working, but I changed it to check for the column "Feed" so I could add several Locations. At first this worked,but I did someething in perfecting it and it now fails after filling the first row of the datagridview (dgvFdMed).I ran a check and the table LotsTab has 8 rows filled. Column 1 & 2 are strings and the database appears they are fine. The added columns have just been created with no value. My plan is to enter the values and then use the data from the grid.
Private Sub sfillGrid(ByVal Loc As String)
Dim i As Integer
Dim column As DataGridViewColumn
[code]....
VS 2008 Unable To Cast Object Of Type FrmChild1 To Type FrmChild2
Dec 8, 2010I have 2 Child forms inside a parent. For example, FrmChild1 contains a "Friend Sub" I wish to call.I would like one of the child forms to call that sub from another child form (we will call it FrmChild2. The following code works, but when it's done going through the "For Each", I get a "Invalid Cast"
' THIS CODE IS IN FrmChild1
For Each mFrmChild2 As FrmChild2 In FrmParent.MdiChildren
mFrmChild2.GuestRefresh(False)
Next
Error after calls are made:"Unable to cast object of type FrmChild1 to type FrmChild2.
Error - Unable To Cast Object Of Type 'AbstractListlistIterator' To Type 'System.Collections.IEnumerator
Dec 22, 2010I have a series of API calls that are returning J# data types. I have been able to convert most of the data types (Integer, Boolean, Double, Float, etc) just fine.What I need to do now is convert a java.Util.Collection to a VB .NET collection (ArrayList)
Here is my attempt:
Public Function MakeDotNETCollection(ByVal javaCol As java.util.Collection) As Collection
Dim dotNetCol As Collection
[code]....
I keep getting a runtime error "Unable to cast object of type 'AbstractListlistIterator' to type 'System.Collections.IEnumerator.
Unable To Cast COM Object Of Type 'System.__ComObject' To Interface Type 'MSTSCLib.IMsTscNonScriptable?
Jun 1, 2012I am building a software which will be used to create a remote desktop connection. However I'm getting this error:
Unable to cast COM object of type 'System.__ComObject' to interface type 'MSTSCLib.IMsTscNonScriptable'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{C1E6743A-41C1-4A74-832A-0DD06C1C7A0E}' failed
due to the following error: Δεν υποστηρίζεται τέτοια διασύνδεση (Exception from HRESULT: 0x80004002 E_NOINTERFACE)).
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VS 2008 : Error - Unable To Cast Object Of Type 'ObjectCollection' To Type 'System.Array'
Feb 24, 2012I am using a background worker and am attempting to use the following code. However I keep getting this error on i "Unable to cast object of type 'ObjectCollection' to type 'System.Array'."
Private Sub btnVerify_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnVerify.Click
myArray = listProxies.Items()
BackgroundWorker1.RunWorkerAsync()
End Sub
[code]....
Unable To Cast Object Of Type 'System.Windows.Forms.HtmlElement' To Type 'mshtml.IHTM
Nov 9, 2009I have given reference to Microsoft HTML in COM (am using VB 2008)
"Unable to cast object of type 'System.Windows.Forms.HtmlElement' to type 'mshtml.IHTMLElement'."
I want to retrieve all the properties like the class name, html id of every object in the web browser. I am getting the above exception when i try to direct cast it.[code]...
Error : Unable To Cast The COM Object Of Type 'System._ComObject' To Interface Type 'Microsoft.Office.Interop.Word.CustomProperties'
May 10, 2009I have been trying to use vb2008 to automatically update CustomDocumentProperties fields that I have set up within a pro-forma document. I can load the Word application and word document without problems.I want to update the CustomDocumentProperties fields with data read from a dB. To do this I am assuming that I need to iterate through the CustomDocumentProperties fields within the word document and when one is "found" that matches the data I wish to merge then assign the dB value to the field.The problem is that I am getting an exception error when I try to reference the document customdocumentproperties
"Error : Unable to cast the COM object of type 'System._ComObject' to interface type 'Microsoft.Office.Interop.Word.CustomProperties'. ...... "
my code looks like;
Dim WordApp As Word._Application
Dim odoc As Word._Document
Dim BContinue As Boolean = True
[code].....
Unable To Cast Object Of Type <xxx> To Type <xxx>
Feb 9, 2010I'm working on an application that uses a custom configuration file and reads the contents into a public shared readonly variable named "settings":
Public NotInheritable
Class Globals
[CODE]...
This part seems to work just fine. The problem I can't seem to solve is when I try to access the "Settings" from a class that provides connection info.
Here is the code that creates an instance of the "Settings" to get at the "ProviderType":
Private
Shared _instance
As StoreProvider
[CODE]...
The application throws an "unable to cast object of type 'TheBMTStoreSection' to type 'BMTStore.TheBMTStoreSection'.
The web.config contains the following section name and section:
<section
name="TheBMTStore"
type="TheBMTStoreSection"/>
[CODE]...
Unable To Cast Object Of Type 'System.Collections.Generic.List`1[System.Int32]' To Type 'crmWebService.ArrayOfInt'?
May 14, 2012I'm getting an error after sending a list to a web service.This is the code that is calling the web service:
Dim sProgramInterest As New List(Of Integer)
crmService.InsertProspectGetId(sProgramInterest.ToList)
But I'm getting this error.
[code].....
VS 2010 Unable To Cast Object Of Type 'System.Windows.Forms.MouseEventArgs' To Type 'System.ComponentModel.RunWorkerCompletedEventArgs'
Jun 25, 2010My project worked a first and now its giving me a problem.The error
Quote:
Unable to cast object of type 'System.Windows.Forms.MouseEventArgs' to type 'System.ComponentModel.RunWorkerCompletedEventArgs'.
Error : Unable To Cast Object Of Type 'System.EventArgs' To Type 'System.Windows.Forms.KeyPressEventArgs'
May 16, 2011[URL]The issue is as soon as I change the value of the text boxes it gives me an error and forces me to close the project.
The error is:Unable to cast object of type 'System.EventArgs' to type 'System.Windows.Forms.KeyPressEventArgs'.
However I'm supposed to clear the number of gallons used and the total charged when a change is made to the contents of the 2 text boxes on the form.
Error Unable To Cast Object Of Type 'System.Data.SqlTypes.SqlDecimal' To Type 'System.IConvertible'
Jun 6, 2011I have an InvalidCastException Error in my program. The program is that i try to insert an employee record into a database table after getting the details from a form. I've used Money data type is SQL Server for salary and SqlTypes.SqlDecimal data type in employee template class. i've used a stored procedure to pass the values and i add the basic value by passing a parameter by the method
Dim prm8 As SqlParameter = com.Parameters.Add("@basic", SqlDbType.Money)
prm8.Direction = ParameterDirection.Input
prm8.Value = emp.Bsc
I've used the money datatype itself even in the stored procedure variable.I get the following error.
failed to convert parameter value from sql decimal to decimal
Even if i use
prm8.Value = Convert.ToDecimal(emp.Bsc)
I get an error Unable to cast object of type 'System.Data.SqlTypes.SqlDecimal' to type 'System.IConvertible'.
Forms :: Display Picture In Picturebox1 - Shows This Message, Unable To Cast Object Of Type 'System.DBNull' To Type 'System.Byte[]'?
Dec 24, 2009Now I want to display picture in picturebox1.To do this I use this codes, but it does not display picture
on this line: Dim arrPicture() As Byte = CType(dt2.Rows(0)("img_path"), Byte())
it shows this message,
Unable to cast object of type 'System.DBNull' to type 'System.Byte[]'.[code]......
Ado.net Error (Unable To Cast Object Of Type 'System.String' To Type 'System.Data.IDataReader'.)?
Jan 29, 2012I am getting this error when I am tring to load string type to data table)
Using connection As New SqlConnection("connectionstring;")
connection.Open()
Using Command As New SqlCommand("SELECT ClientId,forename,surname from t_clientdetails
[code].....
ASP.Net Error - Unable To Cast Object Of Type 'System.String' To Type 'System.Data.DataTable'
Oct 4, 2009I get the below error Unable to cast object of type 'System.String' to type 'System.Data.DataTable'.This is the code I'm using
Dim str As String = String.Empty
If (Session("Brief") IsNot Nothing) Then
Dim dt As DataTable = Session("Brief")
If (dt.Rows.Count > 0) Then
[code]....
Unable To Cast Object Of Type 'ImagesFlag' To Type 'System.Collections.Generic.IEnumerable`1[ImagesFlag]'
Jan 7, 2012And here is the code that produces the error
CODE:
How can i cast this one?
Unable To Cast Object Of Type 'System.String' To Type 'System.Windows.Forms.TextBox'
Jun 12, 2011Unable to cast object of type 'System.String' to type 'System.Windows.Forms.TextBox'.
View 12 RepliesCan't Copy Paste Cut Code - Gives Error "Unable To Cast Object Of Type 'Public_Information_System_Remake.PIS' To Type System.Windows.Forms.TextBox"
Mar 31, 2011same errors or something related to System.windows.forms. Unable to cast object of type 'Public_Information_System_Remake.PIS' to type 'System.Windows.Forms.TextBox'.
[Code]...
VS 2010 - Unable To Cast Object Of Type 'System.String' To Type 'System.Object[]'
Jan 25, 2011For I = 0 To 10
If Items.Count = 0 Then Exit For
Dim T As New Thread(AddressOf Thread)
T.Start(New Object() {"Test", "Test"})
[code]....
When I put same code in empty project it works.