Web Forms :: System.ArgumentException - Can't Convert To System.Int32
Dec 16, 2010
i work with visual studio 2005 and asp net 2.0. i have a method method as this :
[Code]....
this problem is follow if i run the web method and don't enter a string and a int a receive this message : System.ArgumentException: Cannot convert to System.Int32. ok when i arrive in the method i can check if lists is empty but how i can do if int is NULL because i don't want to returns a error if people run my web method and don't enter the parameters.
I am writing unit tests for fluent Nhibernate, when I run the test in isloation it passes, but when I run multiple tests. or run the test more than once it starts failing with the message below System.ApplicationException : For property 'Id' expected '1' of type 'System.Int32' but got '2' of type 'System.Int32'
I am trying to configure one http module(a vb module) on MOSS site. In this module I have entry like below:
Dim roles As String() = Nothing Dim webIdentity As New GenericIdentity(OracleUser, "Form") Dim principal As New GenericPrincipal(webIdentity, roles) HttpContext.Current.User = principal System.Web.Security.FormsAuthentication.RedirectFromLoginPage(HttpContext.Current.User.Identity.Name.ToString, False) Due to this I am getting 500 internal server and exception on browser is: Exception of type 'System.ArgumentException' was thrown. Parameter name: encodedValue
If I comment "HttpContext.Current.User" related two lines then it redirect to form login.
I get this Microsoft .NET Framework start up error. when i try to run a window project.
i am working on visual studio2005 (.NET FRAMEWORK2.0).
i am working on win 7 machine & i am not able to edit machine.config file.coz it is read only type.
below is the error ....
See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
Exception Text
System.ArgumentException: Parameter is not valid. at System.Drawing.Bitmap..ctor(String filename) at HumanHistology.frmquiz1.FillOptions() at HumanHistology.frmquiz1.btnnext_Click(Object sender, EventArgs e) at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
I have this method which does not build, it errors with the message:
Cannot implicitly convert type 'System.Web.HttpPostedFile' to 'System.Web.HttpPostedFileBase' I really need this to be of type HttpPostedFileBase instead of HttpPostedFile, I have tried boxing and it does not work: foreach (string inputTagName in HttpContext.Current.Request.Files) { HttpPostedFileBase filebase =HttpContext.Current.Request.Files[inputTagName]; if (filebase.ContentLength > 0) { if (filebase.ContentType.Contains("image/")) { SaveNonAutoExtractedThumbnails(doc, filebase); } } }
Is there a good way to test and debug these errors. I constantly get them emailed to me from my production site but I can not duplicate them. Below is the entire error.
User: jbrown IP: 74.202.255.133 Session[STUser] = DAL.stUser Session[PlaylistName] = Adult Contemporary Holiday Blend 2010 (vol. 2) Session[PlaylistId] = 3865 Session[SES-FAN] = SessionFan Session[fullPreview] = yes System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %>in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager. RegisterForEventValidation method in order to register the postback or callback data for validation. at System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) Exception of type 'System.Web.HttpUnhandledException' was thrown. System.Web at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at ASP.brandbrowse_aspx.ProcessRequest(HttpContext context) in c:WindowsMicrosoft.NETFramework64v2.0.50727Temporary ASP.NET Files oote6fbb3019956ec5aApp_Web_u-x9w715.8.cs:line 0 at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
In the codes below, I got an error on the 2nd line. The "Connection" string is defined in Web.Config.
What does the Exception Details mean? How to solve the error?
Dim strConn As String = ConfigurationManager.ConnectionStrings("Connection").ConnectionString Dim conn As New SqlConnection("strConn") Dim queryString As String = "SELECT CustomerID, CompanyName FROM dbo.Customers" Dim adapter As SqlDataAdapter = New SqlDataAdapter(queryString, conn) Dim customers As DataSet = New DataSet adapter.Fill(customers, "Customers")
Exception Details: System.ArgumentException: Format of the initialization string does not conform to specification starting at index 0.
I got the following error when i tried to insert a new record after the run my project, so what does this error indicates?
"{"Cannot insert explicit value for identity column in table 'Articles' when IDENTITY_INSERT is set to OFF."} System.Exception {System.Data.SqlClient.SqlException}
When i click on the page that represents a controller the following error was displayed:-
"The null value cannot be assigned to a member with type System.Int32 which is a non-nullable value type"
On this link of code
var articleapproval = articletyperepository.FindAllArticlesRequireMyApproval().ToList(); while the FindAllArticlesRequireMyApproval execute the following LINQ statement :- var articleapproval= articletyperepository.FindAllArticlesRequireMyApproval().ToList();
where this methods calls the following LINQ statement:-
I am using Entity Framework to contact my data base. as part of my web code I am using Linq to entities, and I want to determine the number of elements in an anonymous type list. I can't get it to work, I get the exception: "LINQ to Entities does not recognize the method 'Int32 Parse(System.String)' method, and this method cannot be translated into a store expression."
var questItem = from chapters in context.TestChapter from questions in context.Question where chapters.ID == int.Parse(Request.QueryString["id"]) where questions.TestChapterID == chapters.ID select questions.ID; int numOfSteps = questItem.Count();
I am importing data from Excel sheet to a database. The table in the database has a special column where I store Interior.ColorIndex of each row in Excel. Then I display the data in a GridView. I need its rows to have the same or close colors as corresponding rows in Excel. I cannot find how to convert the color information I store in my database into System.Drawing.Color (in other words, to RGB) to apply to my GridView.
We have a cms-system based on asp.net 2.0 and generate urls like: ~ui/article/show.aspx?id=123Now - we would like to convert this cms to asp.net 4.0 and mvc with ceo friendly urls. Do you know any godd tutorials for this?
Using C# I was trying to develop the following two. The way I am doing it may have some problem and need your kind advice. In addition, I dont know whether there is any existing method to do the same.
So, I've been programming for a number of years. Finding some intricately asinine issues w/ ASP.NET and VB.NET as I learn them. How about this one:
[Code]....
The issue is not Date1 The issue is Date2.
No kidding. I had to String.Format Date1 for some odd reason, even though I'd already validated it. And, yes, I tried to parse and convert Date1 but I kept gettting the typical "Argument 'Date2' cannot be converted to type 'Date'." error. (Did you catch the copy & paste? I didn't edit it from my existing error, but Date2 should be Date1.) Yeah, that's the error I'm getting now with the above ...
"Argument 'Date2' cannot be converted to type 'Date'."
Date2 is a system defined type. Why can't the system convert and/or simply use it's own pre-defined type?
I have a report like page which displays a gridview and a chart created from .Web.UI.DataVisualization.Charting which I want to convert to pdf. Currently I am using iTextSharp which in my opinion is really great. I managed to create the table in the pdf but cannot find a way how to display the chart as well.
