MVC :: Error - Late Binding Operations Cannot Be Converted To An Expression Tree
Nov 12, 2010I get this error "Late binding operations cannot be converted to an expression tree."
[code]....
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C# - Late Binding In Child AppDomain - Develop A Plugin Architecture
Oct 1, 2010I am trying to develop a plugin architecture in .Net. The application will be a .Net application. There will be directories which holds the plug-ins. Each directory will represent a plugin. Each plugin directory will also contain all the dependency dlls as well. The plugins need to be stored in separate AppDomain as the plugins may use the same assemblies, but different versions. As it iterates through the foreach loop in Init(), I get a System.IO.FileNotFoundException : Could not load file or assembly '[Assembly Name], Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.in _apDomain.Load() for assemblies that are not in the main project.
readonly private AppDomain _appDomain;
internal ItemModuleAppDomain()
{
AppDomainSetup info = AppDomain.CurrentDomain.SetupInformation;
_appDomain = AppDomain.CreateDomain("ChildDomain");
}
public void Init(string dllDir)
{
string[] dlls = Directory.GetFiles(dllDir, "*.dll", SearchOption.TopDirectoryOnly);
foreach(string dll in dlls)
{
_appDomain.Load(AssemblyName.GetAssemblyName(dll));
}
Web Forms :: Inline Expression Or Binding Expression In The Server Head Section?
Aug 25, 2010I write inline expression and binding expression in the server head section:
[Code]....
[Code]....
But both kinds of expression aren't parsed or executed except the ResovleUrl menthod. The html renders like this:
<head><link rel="stylesheet" type="text/css" href="<%= Request.ApplicationPath %>themes/style1.css" /><link rel="stylesheet" type="text/css" href="<%# Request.ApplicationPath %>themes/style2.css" />
<link rel="stylesheet" type="text/css" href="/themes/style3.css" />
<script type="text/javascript" src="/js/jwork.js"></script>
</head>
As I know, the inline expression in the attributes of server control can't be parsed but the binding expression should if we invoke the DataBind method. But the above case breaks the rule.
C# - How To Create A Pivot Table With Dynamic Column Using Linq Tree Expression
Feb 8, 2011i'm writing an asp.net C# web application; i have an in-memory datatable named 'table1' having three columns 'country', 'productId' and 'productQuantity'; i want to pivot that table in order to obtain a new table (suppose 'table2') having the first column 'country' as a fixed column and a dynamic number and names of columns 'product_1', 'product_2', ..., 'product_n' according to the total number of products existing in 'table1'; the first column 'country' must contain the country name; the dynamic generated columns 'product_1', 'product_2', ..., 'product_n' must contain the productQuantity that has been selled for each specific product in the specified country
i'm using Linq query expressions to write the code; the problem is that i cannot hard-code the names neither the values of the products; i cannot predict how much products exist in the datatable;
for now, i'm testing the results using the following expression :
[Code].....
i'm giving an example on how 'table1' looks like and how 'table2' must look like :
view example image of the two tables table1 and table2
Forms Data Controls :: Tree View Binding To Tables In Database?
Feb 16, 2011I have three tables
tbl_Cus CatID (Int) CustID(int) CabID(int)
tbl_Cat CatID(int) CatName(varchar) CusID
tbl_Cab CatId(int) CabID(int) CabName(varchar)
I am using Tree View control for the first time.
The above tables I want to bind it to a tree view control the tree view should look some thing like this.
Cus Name1
Cat Name1
CabName1
CabName2
CatName2
CabName1
CabName2
Cus Name2
Cat Name3
CabName1
CabName2
CatName4
CabName1
CabName2
Databinding - Why Binding Expression Shows Nothing
Mar 7, 2010I'm just testing a simple databind expression with:
<div>
Now: <%# DateTime.Now.ToString()%>
</div>
According to MSDN:
[URL]
literal text <%# data-binding expression %>
should work.
When I compile, it's OK but I got a blank instead of Now DateTime.
C# - Int Values Get Automatically Converted Into Float Values On Binding The Text Values In Gridview?
Jun 29, 2010I am getting int values from the stored procedure. But when i bind this datasource with the gridview i am seeing the values being converted into float. i am using Text='<% # Bind("Quantity") %' I wanna that to be displayed as int, with out zero'seg: let the value be 233, when i bind that its getting displayed as 233.00
View 1 RepliesError 6 Value Of Type 'String' Cannot Be Converted To 'System.Web.UI.Control' - How To Fix It
Jul 29, 2010On the WebFrmSales.aspx, regarding the textbox controls, after the user have updated the SQL SERVER table with it. I tried to write the coding to clear all the textbox control but it not working.
This is the error message generated:
Error 6 Value of type 'String' cannot be converted to 'System.Web.UI.Control'.
This is the coding using VB Scripting
Code:
[code]....
Web Forms :: SQLDataSource Error - Value Of Byte Cannot Be Converted To String
Sep 15, 2012I have datalist bind with sql datasourceI have update command
Protected Sub DataList1_UpdateCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataListCommandEventArgs)
Dim ID As String = DataList1.DataKeys(e.Item.ItemIndex).ToString()
Dim title As TextBox = CType(e.Item.FindControl("textCategoryName"), TextBox)
Dim image As FileUpload = CType(e.Item.FindControl("FileUpload1"), FileUpload)
[Code] ....
It shows the error in the line
SqlDataSource1.UpdateParameters("image").DefaultValue = image.FileBytes
Value of byte can not be connverted to string
I also change the sql datasource parameters for image from object to byte
<UpdateParameters>
<asp:Parameter Name="title" Type="String" />
<asp:Parameter Name="image" Type="byte" />
<asp:Parameter Name="ID" Type="Int32" />
</UpdateParameters>
Web Forms :: Inline Expression Syntax For Binding Listbox Selectedvalue To Textbox In The Same?
Apr 14, 2010the inline expression syntax to bind the selectedvalue of a listbox to a textbox.text?
View 2 RepliesDataSource Controls :: Insert A Record Error - Can't Perform Create, Update, Or Delete Operations On 'Table?
May 11, 2010when i want insert a record i see an error like this Can't perform Create, Update, or Delete operations on 'Table(MainMenuLink)' because it has no primary key. with this codes:
MyLinqDataClassesDataContext db = new MyLinqDataClassesDataContext();
MainMenuLink li = new MainMenuLink { Link = "www.tprogrammer.com", LinkSubject = "subject" };
db.MainMenuLinks.InsertOnSubmit(li); [code]....
AJAX :: Loading AutoCompleteExtender Is Too Late / How To Optimize
Oct 21, 2010I posted a question about using AutoCompleteExtender. It simply shows users all available email addresses when they type in a letter(prefix).
It works, but the problem is it loads to late :( takes around 5 seconds to pull out the list.
So I would like to optimize this
The part I would like to optimize speed is:
[Code]....
Visual Studio :: Web Project Converted From 2005 To 2010 Gets Dynamic Compile Error On The @Page Directive?
Jan 12, 2011As that title says my aspx page shows a compile error on the @Page directive that says "ASP.NET runtime error: Cannot load file or Assembly 'Microsoft.SqlServer.BatchParser' or one of it's dependencies". The project compiles with our error and it runs with no problem. The only real problem that this causes it that the intellisense for anything other than simple HTML is broken so I can't type asp:Controlname and have intellisense show me a the list of items or properties in a control. I get a green squiggly line under all the asp tags saying "Unrecognized tag prefix or device filter 'asp'". This project doesn't directly use SQL SMO but it does reference a project that does. However, I removed that reference and the problem still doesn't go away. I have installed on my development machine the full SQL client and for both SQL 2005 and 2008 (including the SDK) from the Developer editions of both versions. This was not a problem on VS2005 and the project compiles without error in VS2010 too.
View 1 RepliesError - Compiler Error Message - CS1525: Invalid Expression Term
Apr 22, 2010<%# Eval("NAME").ToString() == "Edit" ? %>
<asp:ImageButton ID="imgEdit" runat="server" ImageUrl="../icons/icoedit.png" CommandName="Edit" CommandArgument='<%# Container.DataItemIndex %>' />
Error: Compiler Error Message: CS1525: Invalid expression term ',
Databases :: Run Query In SQL Error / Error In SELECT Clause: Expression Near ')'?
Dec 7, 2010I am not able to understand what is the problem with My sql ..as same query is run sucessfully while i use SQL Server 2005 whit out any Exception or error.........
Select Count( Date ) From Attendancemaster
Error in SELECT clause: expression near ')'.
Unable to parse query text.
this is very simple query run sucessfully in SQL Server 2005 but not in
MY SQL and giving Error..and the query on which any datetime avar comes in WHERE clause allso generate error always....?
ADO.NET :: Saving IQueryable In Cache Error "The ObjectContext Instance Has Been Disposed And Can No Longer Be Used For Operations That Require A Connection"
Oct 29, 2010i want to save a IQueryable in cache like this:
[Code]....
However when i try to retreive it and use it i get this error: The ObjectContext instance has been disposed and can no longer be used for operations that require a connection.
Forms Data Controls :: How To Dynamically Change Values Within A Data Binding Expression
Jun 8, 2010I have a repeater control populated with data binding expressions like in the expression below...
[Code]....
I want to be able to redirect a user to default link if the LinkURL value is empty, that is for each data item, there will be a check if the LinkURL field contains a value. If not, a default value will be supplied.
Forms Data Controls :: How To Pass Control Reference To Its Property In Data Binding Expression
Nov 24, 2010Here is data binding expression (dropdown list is nested in gridview)
[Code]....
Code Behind has function which looks like
[Code]....
The whole reason for passing the reference is to save round trip to database and not to use SESSION
Error In ScriptResource.axd: "Object Of Type 'Sys.Extended.UI.AccordionBehavior' Cannot Be Converted To Type 'Sys.UI.Behavior'
Oct 14, 2010I have an asp.net web site where I'm trying to resolve what looks like a problem with ASP.NET AJAX:
Microsoft JScript runtime error:
Sys.ArgumentTypeException: Object of
type
'Sys.Extended.UI.AccordionBehavior'
cannot be converted to type
'Sys.UI.Behavior'. Parameter name:
instance
I've googled around a lot, and looked at the code presented (see below, no idea what it means) but no luck.
I've tried changing scriptmanger scriptmode to release, and a bunch of other things too.
Details:
Visual Studio 2010
ASP.NET 4.0
Ajax control toolkit 4.0
jQuery 1.4.2
jQuery UI 1.8.5
JS Code the error occurs in, inside ScriptResource.axd:
dispose:function()
{
var c=this;
b.UI.Behavior.callBaseMethod(c,eb); --------- this line
var d=c._element;
if(d)
{
var f=c.get_name();
if(f)
d[f]=a;
var e=d._behaviors;
Array.remove(e,c);
if(!e.length)
d._behaviors=a;
delete c._element
}
}
Declaration of accordion control:
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="atlas" %>
(snip)
<atlas:Accordion ID="menu" runat="server" SelectedIndex="0"
ContentCssClass="accordionContent" FadeTransitions="true" FramesPerSecond="30"
TransitionDuration="250" AutoSize="None" Width="270">
</atlas:Accordion>
*Update: *
Added accordion control declaration as requested, is there anything else I can add that could be useful?
Does anyone have any idea about this error at all - am I right in thinking it's MS AJAX not playing nicely with other javascript (probably jQuery UI) on the page?
Get An Error A String (selected Category In The Ddl) Cannot Be Converted To A Category Object?
Feb 7, 2010I'll try to explain as simple as I can in text what my problem is. I don't see any other way to make my issue clear.
I have a GridView that uses an ObjectDataSource.
The ObjectDataSource has an DataObjectTypeName defined, so I pass/get complete objects or list of objects to/from the data access methods.
The objects I'm working with, let's say we work with Book objects, contain a Title and a Category, BUT the Category is an object itself. When the Select method is called, we get a List of Book objects, which is perfectly displayed, overridden ToString method in the Category objects within the Book objects.
The problem I face is that I can't find a way to update the category in my GridView. What I did already accomplish is:I used a template field in the GridView for the Category so I could use a DropDownList for that field in Edit mode.
I bound the DropDownList to another ObjectDataSource that gives me a list of CategoryObjects.
So when I enter Edit mode... the row shows a nice ddl with the available categories. It even selects the right original category.
So far so good... but when I want to save my new selection, I get an error that a string (the selected category in the ddl) cannot be converted to a Category object (that's what the Book object, that is going to be used for the update, expects).
Forms Data Controls :: Tree View Set Slected Index / Auto Selected Index Change To Tree Node?
Jan 25, 2011I have two control page in my aspx page. first one left side "tree view",second one right side " form design".Form design will change based on tree view selected index changed.i have 4 level child node(site, master , slave, space). I have seperate forms to each level of node.
cannot update tree node when update the forms. so i reload tree view.
now i need how to auto selected index change to tree node.
ex.
1 parent node
1.1 child node
1.2 child node
i have update "1.2 child node" rename to "1.3 child node"
and reload treeview so it will chage...
how set tree node.selected index = 1.3 child node....
Data Controls :: C# Error - Arithmetic Overflow Error Converting Expression To Data Type Datetime
May 7, 2015I am trying to insert a value in database from a dropdownlistddlvaue = 10.00 - 11.00in db asstarttime=10:00:00endtime=11:00:00using split function
string dropdownvalue = ddlduration.SelectedItem.Text.ToString();
string et = dropdownvalue.Split('-')[1].ToString();
endtime = et.Split(' ')[1].ToString();
starttime = dropdownvalue.Split(' ')[0].ToString();
I am joining date value + time value in the query uisng('" + datevalue + "' + ' ' + '" + starttime + "')
'2014-05-15' + '16.00' --> to get 2014-05-15 16:00:00
it is getting inserted successfullybut while selecting and viewing it from the database I am getting error as,
"Arithmetic overflow error converting expression to data type datetime"
If i mannually enter the date in db it is workingmanuall value=2014-09-30 14:00query value =2014-09-30 14:00
both are same but error is only occuring for query inserted value
Why Get A Error When Use Regular Expression
May 11, 2010Regex rxQuarter = new Regex("d{5}"); why i get a error when i use this regular expression..its not recognising the "d"
View 2 RepliesRegular Expression Pattern Error C#?
Oct 19, 2010When I have an Expression declared like
someText = Regex.Replace(someText, @"/*.*?*/", "");
The Error Says
System.ArgumentException: par"/*.*?*/" parsing - Nested quantifier *.
How to rewrite the code to avoid this error?
Getting The Error ') Expected' And 'Invalid Expression )'
May 18, 2010I keep getting the error ') expected' and 'Invalid expression )' on the following code:
[Code]....