We have code that casts an object to a short. type.BusinessAreaID = (short)caType.credit_assessment_biz_areaReference.EntityKey.EntityKeyValues[0].Value; The object has the value of 2. This code (unit test) works on the PC of the developer that created the code. But we get a invalid cast exception on the build server and on another d...
Follow along in my test source. What is a good way to get a value from a enum object? Must support long. I am attempting without a try/catch block. enum ELong: long { a = 0x100000000 }; enum ENormal { a = 25 } var l = (object) ELong.a; var n = (object)ENormal.a; //will cast into the correct size int ii =...
This is my class that implements IValueConverter: [ValueConversion(typeof(int), typeof(Priority))] public class PriorityConverter : IValueConverter { #region IValueConverter Members public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { return (Priority) (int) value; } ...
I have: Protected Sub SepInsert(ByVal mriId As VariantType, ByVal aeId As VariantType, ByVal absId As VariantType) ... End Sub and want to call it with a DropDownList selection like this: Protected Sub cmdNewPrelinkedMri_Click(ByVal sender As Object, ...
Hi all, I'm having a bit of trouble with a Windows Service webbrowser object. It's attempting to load in values of username and password to a site but keeps failing and throwing the following error: System.InvalidCastException: Specified cast is not valid. at System.Windows.Forms.UnsafeNativeMethods.IHTMLDocument2.GetLocation() a...
I'm trying to Parse dates entered into a TextBox into a DateTime value but I keep getting an exception in the TryParseExact method. What I'm trying to do is: DateTime.TryParseExact(tbAddDate.Text.Trim, "yyMMdd", New CultureInfo("sv-SE"), DateTimeStyles.None, row.Date) This throws an InvalidCastException with the message "Conversion fr...
(Using VS 2010 Beta 2 - .Net 4.0 B2 Rel) I have a class, MyTable, derived from BindingList where S is a struct. S is made up of several other structs, for example: public class MyTable<S>:BindingList<S> where S: struct { ... } public struct MyStruct { public MyReal r1; public MyReal r2; public MyReal R1 {get{...} set...
I'm trying to write a windows service. It installs fine, but fails when I run it with the following exception. I've searched for the string "MyNewProgramService", but I can't find any conversions that would throw this error. I've also added try/catch blocks to a bunch of code with custom exception handling without finding where this ex...
My site is using enterprise library v 5.0. Mainly the DAAB. Some functions such as executescalar, executedataset are working as expected. The problems appear when I start to use Readers I have this function in my includes class: Public Function AssignedDepartmentDetail(ByVal Did As Integer) As SqlDataReader Dim reader As SqlDataRe...
Hello. I try to use this code : webBrowser.Document.GetElementById("login").SetAttribute("value", "user"); It work great but not when i use it in a new thread. I get an InvalidCastException. What can I do ? ...
Hi, I run into this problem System.InvalidCastException: Unable to cast object of type 'System.Data.Linq.DataQuery1[Student]' to type 'System.Collections.Generic.List1[Student]' When I debug this function: Public Shared Function SearchStudent(ByVal firstname As String) As List(Of Student) Dim db As New DemoDataContext() Dim...
Hi I have the following procedure private static IMyInterface OpenInstance( string assemblyPath, string classType, string assemblyName, out AppDomain domainInstall) { IMyInterface interface = null; AppDomainSetup domaininfo = new AppDomainSetup(); domaininfo.ApplicationBase = assemblyPath; domainInstall = AppDomain.C...
Is there a way to check whether a C# cast will be successful? In some cases; based on how a rendered page is put together; inheriting from different Master Pages, some casts will work and others will not. I am wondering how I can check to see if a cast will be successful or if I just have to catch and handle an invalid cast exception. ...
The tooltip displayed for Convert.ToDateTime() says that it always throws System.InvalidCastException. Why? ...
Hi, i have a TreeView which is binded trough a HierarchicalDataTemplate. Im listing there a List which contains a list of a directories and files. private void getDirectoryList() { using (FileOperations fileOP = new FileOperations()) { this.DokumentBrowser.ItemsSource = fileOP.list_directory(rpath); //Li...
I'm getting a peculiar exception using the Html.RenderPartial method. ASP.NET MVC seems to be unable to an object of type ClassA to an object of type ClassA. I was wondering if anyone knows what's going on. Here's a little more background info. I'm having the following hierarchy in place: public interface IInterface { string Name {...
Here's the gist of it: There is a list of classes at my school. Each class belongs to a single Career. I'm creating the create a new class form, eg. Math, Social Studies, etc. On the form I want a dropdownlist to generate with the available Careers we offer. Unable to cast object of type 'System.Collections.Generic.List`1[System.We...
I'm currently completely baffled by the problem I'm having. I'm writing a plug-in for another application that provides a public .NET API. I've created a class named Room and I am using a PropertyGrid to allow users to see and edit the properties of the Room instances. A few properties are restricted to a set of standard values. Thus I a...