I have a rather complex model that I am using to render a form and perform validation using the model's meta information meta information.
The View Model has a list of child objects that are included in the form. the child objects are based on this:
[code]....
I have a class like this
public class MyClass
{
public MyClass()
[code]...
but in my view i keep having this eror
"The value 'System.Collections.Generic.List`1[MyEnum]' is not valid for Enumlist"
I did not specify any validation attribute for the property EnumList, so i don't why the automatic error.
I understand that MVC can be added to an existing ASP.Net Webforms Web Site Project as explained in this post.
I am wondering if any expert here could tell us what MVC related functions of VS2010 would be missing in this scenario. For example, the very useful shortcuts of "Add View..." and "Go To View" seem to be missing. keep in mind this is about aWeb site project not Web application project so no project file (i.e. .csproj) is involved.
I've inherited some code that is having a serious problem. On one page, there are several pairs of "Yes"/"No" checkboxes that act like pairs of radio buttons through the use of the ACT MutuallyExclusiveCheckBoxExtender control. They work as expected. However, when I navigate away from the page, I get a "Microsoft JScript runtime error: Sys.InvalidOperationException: Handler was not added through the Sys.UI.DomEvent.addHandler method." error in the dynamically-generated ScriptResource.ax...c2d9970 [dynamic] file.
The specific method in the dynamically-generated code is:
var $removeHandler = Sys.UI.DomEvent.removeHandler = function Sys$UI$DomEvent$removeHandler(element, eventName, handler)
The element is set to any of the checkbox controls (I've removed them one-by-one and it happens to ALLof them) and the eventName is "Click". I gather from the code that it's trying to do a removeHandler before the addHandler for the particular element has taken place. True, I don't have any explicit addHandler lines in my code, but I don't any explicit removeHandler lines either. About all I've got in the aspx code is:
[Code] ....
The formatting of the code in this message is a bit weird, but it's basically a simple table with three columns. On each row, there's text in the first column, the checkboxes in the second column and a button in the third. I've searched high and low on the web and nearly every thread I read about his error talks about it in relationship to the use of command buttons in an ACT UpdatePanel.
I am using the AJAX Control toolkit version 4.1.40412.0 in a C# web application that is using .NET 4.0.
I am programming with Visual Studio 2010. Most of the time, the AJAX Control toolkit works properly. However,
in one instance, the AJAX Toolkit generates this error message:
Microsoft JScript runtime error: Sys.InvalidOperationException: Two components with the same id
'ctl00_ContentPlaceHolder1_FormTemplateCtl7_UpdateProgress1' can't be added to the application.
The error is generated here:
function Sys$_Application$addComponent(component) {
/// <summary locid="M:J#Sys.Application.addComponent" />
/// <param name="component" type="Sys.Component"></param>
var e = Function._validateParams(arguments, [
[Code]....
The problem appears to be with the UpdatePanel1 object.
In my .net app, I redirect to an error page if an error occurs.
It works fine on my local IIS.
When I deploy to a web server, IIS7, it redirects to the error page, all fine, but these is text added to the error page
"The page cannot be displayed because an internal server error has occurred. "
Could this be added via IIS7? It doesnt happen locally - also IIS7.
When I added Regular Expression validator on FileUpload Control, Page.IsValid returns false & Data is not Saved. I had used Regular Expression Validator like this:
asp:RegularExpressionValidator
ID="REVFileType"
runat="server"
ErrorMessage="*Invalid File(.bmp)"
ControlToValidate="FileUpload1"
Font-Bold="True"
SetFocusOnError="True"
ValidationExpression="^(([a-zA-Z]:)|(\{2}w+)$?)(\(w[w].*))(.jpg|.JPG|.gif)$"></asp:RegularExpressionValidator>.
I had used it to check if uploaded file is of extension .jpg|.JPG|.gif
I add all row CheckBox in my Gridview helping with this article. Here is my Calculate Button code;
protected void Calculate_Click(object sender, EventArgs e)
{
bool atLeastOneRowDeleted = false;
foreach (GridViewRow row in GridView1.Rows)
{
CheckBox cb = (CheckBox)row.FindControl("ProductSelector");
if (cb != null && cb.Checked)
{
atLeastOneRowDeleted = true;
int productID = Convert.ToInt32(GridView1.DataKeys[row.RowIndex].Value);
Response.Write(string.Format( "This would have deleted ProductID {0}<br />", productID));
}
}
}
But when i do that, getting strange error like this;
I have created an Entity Model (.edmx) file with MySql database.I added some tables and then try to apply some linq to sql expression but for each expression it thorws an error "Object Reference not set to an instance of the object"
[Code]....
whichever function I call, I get the same error : Object Reference not set to an instance of an object.
I am getting an error that I never seen before and my login control was working as intened previously.
Here is the error message:
The added or subtracted value results in an un-representable DateTime.
Parameter name: value
Description:
An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ArgumentOutOfRangeException: The added or subtracted value results in an un-representable DateTime.
Parameter name: value
I don't know what to make of this because I think the error is not happening in my own code and so there is no line # in the error message?
I created the accordion control custom dll and added the dll my project reference. After adding the reference in my project, I just the drag and drop accordion control and added accordion panes, after adding the pane and clicked design view I am getting the following error. Even I added the selected index=0 properties also but I am getting same error
"Panes could not be initialized. Details: Pane could not be added to the collection. Details Object does not match target type.
So basically when i open the page i get the error above.
I've removed-added the toolkit toolbox.The error occurs p.e. in MaskedEditvalidator when i remove the mask from
MaskedEditExtender.Ok i know that it probably needs a mask and it crashes but what the hell is the
C:UsersswaltherProjectsAspNetAjaxReleases30930AjaxControlToolkitSourceAjaxControlToolkitMaskedEditMaskedEditCommon.cs ?? I don't even use c: for any project.Who is swalther?WTH?
And is there a MaskedEditCommon.cs in the toolkit?I did not find any MaskedEditCommon.cs in whatever, version library or whatever i downloaded.
Error:[ArgumentOutOfRangeException: StartIndex cannot be less than zero. Parameter name: startIndex] System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy) +7490863 System.String.Substring(Int32 startIndex, Int32 length)
I am having 3 ListBoxs(LB1,LB2,LB3).In LB1 I am binding the names of Courses through database.The code is shon below...
da1 = new SqlDataAdapter("SELECT COURSE_ID,COURSE_NAME FROM Course_Mst", con);
DataTable dt1 = new DataTable();
da1.Fill(dt1);
lstCourse.DataSource = dt1;
lstCourse.DataValueField = "COURSE_ID";
lstCourse.DataTextField = "COURSE_NAME";
lstCourse.DataBind();
Whenever I select particular course in LB1 all the content related to that course will be binded in LB2.The code is shown below.....
protected void LB1_SelectedIndexChanged(object sender, EventArgs e)
{
da2 = new SqlDataAdapter("SELECT SPEC_ID,SPEC_NAME FROM SPEC_TRANS WHERE COURSE_ID="+Convert.ToInt32(lstCourse.SelectedValue)+"", con);
DataTable dt = new DataTable();
da2.Fill(dt);
lstSpecilization.DataSource = dt;
lstSpecilization.DataValueField = "SPEC_ID";
lstSpecilization.DataTextField = "SPEC_NAME";
lstSpecilization.DataBind();
lstSpecilization.Focus();
}
I am having a ADD button.In LB2 I can select multiple items.When I select multiple items in LB2 and click on ADD all the selected items will be binded into LB3.The code is shown below...
protected void btnAddCourseDetaisl_Click(object sender, EventArgs e)
{
for (int intLoopIndex = 0; intLoopIndex <lstSpecilization.Items.Count ; intLoopIndex++)
{
if (lstSpecilization.Items[intLoopIndex].Selected)
{
ListItem li = new ListItem(lstSpecilization.Items[intLoopIndex].Text, lstSpecilization.Items[intLoopIndex].Value);
LB3.Items.Add(li);
}
}
}
My problem is when I select a item from LB2 and click on ADD the selecteditem is added to LB3 but if I select the same item and click on ADD the items are again added to the LB3.I want to prevent this.Pls respond me ASAP.
I am writing a search results page for an airline booking system. I have Next/Previous buttons to view flights for the next or previous days. The way i have done my results grid is that i use an HtmlTable and dynamically add rows, cells and controls into the cells. This gives ultimate flexibility given that we can add any control type we want and have it function as it does everywhere else in the system. As you should be aware - i must recreate these controls each time the page is reloaded (in the page_init event) since asp does not handle this automatically.
When they go next/previous it refreshes the flight data and re-populates the grids. If they select a flight in the return grid (by checking the RadioButton), and go next on the FIRST leg grid, the selection of the return leg stays the same after the postback
- which is great. But the problem is, if the flight they selected on the return leg is no longer available it will not create the control and i get the following error;
"Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request."
Is there any way to tell asp.net that if you do not find the control anymore, simply ignore it rather than throwing the error? The nature of this design is that there potentioally WILL be a different layout after the page is posted back.
display "new " img on latest added news in website
i am displaying news on website which stored in data base ,
these are displaying but now
i want that which news i recently add there should be a sign "new"
this new should shown with recently added news
asp.net with vb. I thought this would be easy but have been reading for an hour and not found out how to simply repost a page where form data has been entered and return the page with some error messages about what was entered. I want to return the page with all input controls with the data just as the user entered them before submitting. the error messages are labels that were blank when the page is first loaded. preferably the page returns focused to the topmost error error message. if that can't be done I would populate some label at the top of the page with something to the effect that 'errors were found, scroll down to see the errors'
View 2 RepliesMy host moved my website to a new server. The DNS configuration is correct but the website is still down and I'm getting this message
"unable to open website at www.aboutmecfs.org. Internal Server error"
I have a new development machine running windows 7 professional 64 bit. On loading up a website project Im getting this error
'The Web Application Project 'websitename' is configured to use IIS. To access local IIS websites, you must install IIS components:
IIS 6 Metabase and IIS 6 Configuration Compatibilty
ASP.net
Windows Authentication
In addition you must run Visual Studio in the context of an administrator account
As far as Im aware, I am an administrator of my own pc and I have the .net framework installed.
I have implemented customised registratio page by extending the membership provider using profile provider.I successfully registered the user .Now i want to validate the fields of registration page.Built-in Registration page has builtin validation messages.
Bu in my coding i am not passing model to the registration action, instead i am passing properties.So if i Use If(ModelState.IsValid) it is always gives true even i am not filling any fields .but after it throws an exception but not displaying error messages in the page.tell me what i have to do.How i am getting my validation messages.
I saw Account Models class in that for register Model built in validation conditions are there.So i am also writing like that for my properties.
[code]....
I have created a custom validation attribute for a class. The validation is actually against one property of the class, but since it needs to be compared to another property of the class at runtime, I had to pull in everything from the input form, perform the validation and output the errors. This being the case, I manually added a ModelError to ModelState if the ModelStats.IsValid returned false. I have another thread that goes into this, as I still haven't been able to make the client-side validation work for the custom validation (built-in validation runs client-side without a problem).
Here's the issue: I want to use the Post/Redirect/Get pattern to avoid issues where users refresh their page and cause another post of the form data. If I complete my Controller action and return a View after assigning an error with ModelState.AddModelError, I get the user feedback with the red input field and error message shown. However, just returning a View like this makes you vulnerable to the repeated posts issue. I want to use RedirectToAction to perform a get and avoid this problem, but when I do that I no longer have the ModelState error feedback on my rendered View. Here're the calls I'm making:
[Code]....
I'd like to be able to redirect to a get action and retain the ModelState.
I want to perform some simple form validation in my controller.
Here's an excerpt from the controller action:
[code]....
It appears that must use a string as the error's key. Is there a way i can generate the corect key from the model, or should I just check for what input name Html.PasswordFor(x => x.NewPassword) returns?
I have textbox on my page as
[Code]....
I created a Model to do registration on my Website, and add some validations to it. When the user inputs a data, the data will be checked for validity using ModelState.IsValid. But when I input a correct data, it always be invalid. So I decided to debug my program and found that there are an extra key in my ModelState.
For my model, I have UserName, Email, Password, ConfirmPassword, SecretQuestion and SecretAnswer (6 elements)But when I debug, in ModelState, I found 7 elements, they are UserName, Email, Password, ConfirmPassword, SecretQuestion SecretAnswer and the last one is "".I don't know why there is an extra "" in my ModelState, and I checked that it was the source of my error.
Below I enclose my source to make it clearer
[Code]....
[URL=http://img37.imageshack.us/i/errorvh.jpg/][IMG]http://img37.imageshack.us/img37/3415/errorvh.jpg[/IMG][/URL]
I have a website on visual studio 2008 on my local machine. When I run through the debugger I get the following error, however when I browse the same website through the IIS manager (running IIS7.5), I can browse it. What do I need to fix to run it through debugger? The website is set as an application.
Error:
Configuration Error
Description:
An error occurred during the processing of a configuration file required to service this request. review the specific error details below and modify your configuration file appropriately.
[Code]....
Server Error in '/' Application. Attempted to read or write protected memory. This is often an indication that other memory is corrupt.Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[code]....