Forms Data Controls :: Objectdatasource Error: Typename Cannot Be Found
Jun 14, 2010
I have a dropdownlist that I'm binding to an objectdatasource within a edit template of a gridview. Everything works fine on our staging server, but when I view on our production server I get the following error:
"The type specified in the TypeName property of the ObjectDataSource 'ObjectDataSource2' could not be found."
The typename is correct. It works on our staging server. What would cause this to not work on our production server? Any way to re-write the code to get this to work? See the code below.
[Code]....
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Jun 26, 2010
I am using Visual Studio 2010 for the first time. I program in MS Access for a long time at decide to move to the ASP world. My problem is that I design my first web .aspx default page with a simple data grid. I decided to connect the data via the business object data adapter. I use the Dataset designer to great the dataset. All looks well and works fine on my PC. But when moved to the server I get the Terror "The type specified in the TypeName property of ObjectDataSource not found".
From my reading for the past two days, it seems that something need to be define (a class of some sort) to let ASP know where to find the data adapter. If this is the case, then why did not Visual Studio 2010 did not automatically build the class in the appropriate BIN/ APP_CODE or Global directory and more importantly, why would it work fine on the PC , but not on the server. I am totally blind-sided by Visual Studio 2010 allowing me to design and test on PC but throws me a curl ball with moving to a server. Am I assuming to much from Visual Studio 2010???
What is the solution.. What I am looking for is to know where exactly where and how to write this class. I am so new to ASP, all of my reading just confusing me more and more by reading so many post on this error. I know it is probably a simple class to write somewhere, but why did not Visual Studio 2010 write it accordingly.
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Mar 14, 2010
How do I make ObjectDataSource work with singleton Business object? My singleton business object is defined in Global:
[Code]....
I get an error:The type specified in the TypeName property of ObjectDataSource 'objThreads' could not be found.
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Feb 11, 2010
I want to bind a datarow array to datagrid, if i do so i am getting an exception saying that item was not found on selected datasource.
datatab = CType(Cache("AlldataAppli"), DataTable)
Dim rws() As DataRow
rws = datatab.Select("uid=" & UID.Text)
dg.DataSource = rws
dg.DataBind()
While binding the data i am getting the following exception.
An exception of type 'System.Web.HttpException' occurred in System.Web.dll but was not handled in user code
Additional information: A field or property with the name 'CAND_NAME' was not found on the selected data source.
This datarow array contains cand_name, i am able to retrieve it through the following line of code.
rws(0).Item("CAND_NAME")
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Nov 8, 2010
I open the page yesterday, it is working fine,, but today I am getting this error...Parser Error Message: Ambiguous match found.Source Error:
Line 1: <%@ Register TagPrefix="NetMenu" Namespace="CYBERAKT.WebControls.Navigation" Assembly="ASPnetMenu" %>
Line 2: <%@ Page language="c#" Codebehind="ClientDetails.aspx.cs" AutoEventWireup="false"
[code]...
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Sep 16, 2010
I am binding SQL data to a GridView. The GridView's DataKeyNames property is set to the SQL column called "utID"
I know that within the SQL results, some of the utID values are NULL. After databinding to the GridView, I need to enumerate through the GridViewRows an read the DataKey values. However, when I try this I get the following error:
No default member found for type 'DBNull'. I am using the code below.
What object types are stored within DataKeys (I thought it was just integers or strings)
How to handle a NULL datakey value to prevent this error occurring?
I don't want to use Try Catch because it's too much of a 'hack'
[Code]....
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Sep 7, 2010
I'm trying to use a MasterType TypeName to access a class with master pages. This works when I'm using .NET 2.0, VS 2005, and C#. When I try this using .NET 3.5, VS 2008 and C# I get the error:
The type or namespace name 'classA' could not be found (are you missing a using directive or an assembly reference?) and it is pointing to the Default.aspx.designer.cs
In the default.aspx I have:
<%@ Page Language="C#" MasterPageFile="...
<%@ MasterType TypeName="classA" %>
I have added a folder App_Code to my project and in that folder I have a class file "classA.cs" that contains:
Using ...
Namespace Project.App_Code
{
public class classA : System.Web.UI.MasterPage
...
The main difference that I see from where it works and where it doesn't work is that where it doesn't work it uses the namespace called Project.So I figure my problem is in the including the class classA in the namespace or properly including the namespace and / or App_Code directory in the MasterType TypeName which I don't seem to be able to figure out.
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Apr 21, 2010
I have done my searching and haven't found anything related to my issue. I have an aspx page that contains a regular drop down control. When the selectedIndex is changed, it fires off a post back and also rebinds a datalist based on its value. Inside the datalist I have an ascx control which has a gridview and an object datasource:
ASPX page:
[Code]....
My problem is that after my drop down posts back, when the process gets to DataList1.databind (in the selected index changed) i get a "The ObjectDataSource control 'ObjectDataSource1b' does not have a naming container. Ensure that the control is added to the page before calling DataBind." error.
During the post back, the pageload on my control runs and all my properties seem to have its values.
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May 7, 2015
I am using this article (Upload Save Retrieve and Play MP4 Video files with live streaming from Database in ASP.Net using C# and VB.Net)...
When I am playing video,getting a error (200 stream not found netstream.play.streamnotfound, clip '[clip] FileCS.ashx?id=1') over the player ...
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Apr 28, 2010
I have a project with lots of ObjectDataSource controls. They collect their data from various classes. am going to move all my classes (that handles the DAL) to a separate class library.Will that cause me any problems?How do i set the TypeName (directly in the .aspx file)?
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Jan 22, 2010
I'm trying to create a web server control with a css embedded in the assembly.
I marked it as an embedded resource, add assembly attribute to reference it and use the proper methods to include the link to that
css in html code... my page renders ok witk something like <link href='/WebResources.axd?....' />
That's when the problem appears! My control isn't using the css as it appears to not found webResources.axd
I tried directly in web browser to locate http://locahost/mysite/WebResources.axd and it came with http code 404 NOT FOUND
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Aug 13, 2010
I will try to keep the question short:
1. I am new to ASP and I can not get this to work:
2. I am Using a <asp:DropDownList in a <InsertItemTemplate> in a <asp:ListView
3. The dropdownlist during insert does not get polulated (it is empty) while the same construction and same datasource works in the edittemplate: <asp:DropDownList in a <EditTemplate> in a <asp:ListView
4. I noticed that filling the dropdownlist with a <asp:ListItem works; the insert list is populated. (not usable for me) In both cases I use the same datasource from the code behind like this : Edit:
<asp:DropDownList ID="DropDownStartday" runat="server" SelectedValue='<%# Bind("startday") %>'
DataSource="<%# GetDataSourceStartDay() %>" DataValueField="daynum" DataTextField="dayname"
Insert: (with or without Selectedvalue: NoJoy)
<asp:DropDownList ID="DropDownStartday" runat="server"
DataSource="<%# GetDataSourceStartDay() %>" DataValueField="daynum" DataTextField="dayname"
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Sep 21, 2010
I have a grid that receives products over a GetList methods via ObjectDataSource. The Product class contains also a Object Supplier. If I change in the drop down list of the grid the supplier for a product and I click update the ID of the suppliier is still the same. I have debugged the call of the update method and checked the parameter in the product object. I wrote the following code in the SelectedIndexChanged event and the text box shows the right id but not the update method.
DropDownList supplier = (DropDownList) sender;
txtTest.Text = supplier.SelectedValue;
Here is the code of my grid view:
[Code]....
My Object Data Source calls the following Update Method:
[Code]....
The next work around idea would be to call the update method manually in the Update Event of the grid view.
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Sep 30, 2010
I want to sorting via clicking header ( kod , aciklama, yeri, are headers ) with list view component and ObjectDataSource. ObjectDataSource use komponentListesi() method for selecting. How can i sorting with use listview component.
Data Object layer
[Code]....
Data Access layer
[Code]....
Listview
[Code]....
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Jan 20, 2011
I got a Buisness Logic Layer where i have a function that returns a DataTable, how can I bind it to SqlDataSource or ObjectDataSource Snippet of BLL
[Code]....
[code]....
aspx.vb file
Dim dt As DataTable = Nothing
dt = ReturnCarsInStock.GetCarsInStockComplete(procBrand, procMode)
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Jun 14, 2010
I am using objectdatasource to bind datagrid,i m using select method of objectdatasource and manage paging (page size 10) and command event also,i have define MaximumRowsParameterName and StartRowIndexParameterName but now problem is when i am trying to delete 11th record from second page and again bind same grid than i coudn't fine rest of 10 records and get no records found.
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Mar 19, 2010
Can you post of an example of Gridview with EditItemTemplate using ObjectDataSource as data connectionand Update the the specific row. Ihave lots of sleepness night with this problem.
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Feb 9, 2010
I've been working a gridview that uses an ObjectDataSource to perform either select, insert, delete or update. I was able to get everything to work correctly with the GridView except when it came to performing an update. My first issue that I came across was that it was tacking on two extra columns or fields that I didn't really expect. The function being called (SavePipelineUser) only expected 4 parameters and was getting 6 in total. This was occuring even though I had placed OldValuesParameterFormatString="original_{0}" or OldValuesParameterFormatString="{0}" within the GridView's attributes.
Ok, So I was able to resolve this issue by going into the OnUpdating event in the ObjectDataSource and doing the following below. This effectively removes the additional parameters from being added. However, I now have a new problem. There doesn't appear to be any values actually being passed into this method. So, while no errors appear, nothing gets updated. Can anyone explain to me why my values are not being carried forward? I've spent about a day and a half working on this issue and was able to get around this by just going with the GridView's RowUpdating event and grabbing values from grid to manually get it to update. While I'm very happy for anything to be working after so much time, I still feel like this is a bad hack for this to work. I have a hard time fathoming why this seemingly simple use of the GridView on my part has turned out to be very complicated. I'm extremely leary now of using the ObjectDataSource object for anything if it's going to be this much of an effort.
<!--html code-->
<asp:GridView ID="gvPipelineUsers" runat="server" AllowPaging="True"
AllowSorting="True" DataSourceID="objCommon" AutoGenerateColumns="False" ShowFooter="True"
[code]...
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Feb 28, 2010
I have a DetailsView control with a SelectMethod and two select parameters wich one of the parameters is a control parameter, The parameters are not passed to objectDatasource's select method, the objectdatasource has been defined as follows:
<asp:ObjectDataSource ID="objCurrCompetitor" runat="server" SelectMethod="GetCompetitorByUserAndCompetition"
DeleteMethod="DeleteCompetitor"
TypeName="MZ.Competitions.BLL.Main.Competitor"
[code]...
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Jan 27, 2010
I'm using a GridView with an ObejctDataSource. The data is provided by a business object and not a DB. It returns a list of people and each person belongs to a group. Now I need to filter data. For example, I need to return list of people in specific groups. How can I specify a list of groups to be able to filter the data ? Could I use SQL like syntax ? I understand the filter expression works only when data is returned as a datatable. But in my business object I maintain data as hashtables and return as List<PeopleInfo>. Do I need to return list as datatable instead ?
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Feb 10, 2010
I am looking for a simple (fastest execute solutions) for generate RSS feed from user search result in ListView & ObjectDataSource?
For example; User does some search, the search result summary is display in ListView. If the user like the search result, he/she click on RSS button, then RSS feed is generate with entire current view record/table.
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Dec 17, 2010
I have a gridview with the ObjectDataSource and the Update does not work. When I click on Edit, I go to Edit mode but Update will not work at all. No errors. I do believe that it is in the RowUpdating method but cannot figure out how to call the method UpdateBook from the BookManager BAL.
BAL BookManager
[Code]....
Gridview
[Code]....
RowUpdating
[Code]....
Put in Breakpoints and it is getting to the RowUpdating but will not update.
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Sep 21, 2010
I get the following error when trying to delete a row in a gridview. The error is strange, since I dont pass 2 parameters as far as I can see.This is the error and the code is below:
Server Error in '/' Application.
ObjectDataSource 'odsRooms' could not find a non-generic method 'DeleteRoom' that has parameters: id, locationid.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidOperationException: ObjectDataSource 'odsRooms' could not find a non-generic method 'DeleteRoom' that has parameters: id, locationid.
Source Error: [Code]....
Stack Trace: [Code]....
[InvalidOperationException: ObjectDataSource 'odsRooms' could not find a non-generic method 'DeleteRoom' that has parameters: id, locationid.]
System.Web.UI.WebControls.ObjectDataSourceView.GetResolvedMethodData(Type type, String methodName, IDictionary allParameters,[code]....
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Jan 4, 2010
I have a datarepeater control on my form. I have a method for updating comments, but I would like it to be exectued when a user clicks a checkbox (inside the datarepeater). The checked value is being "bind" to the checkbox control. Can I use the built in Update Method tied to the objectdatasource?
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Nov 30, 2012
I used numeric captcha in my website
[URL]
It worked correctly in Localhost but when I upload my site on host when I open page that I used captcha for it, it didn't show captcha image so I can't enter captcha in textbox
I use IIS6 but i try your code but again it didn't show any image
see here in code is Path="Image.ashx" but i didn't have any file like that im my website? what is that?
when i see view source for captcha is below code
<img alt = 'Captcha' src = '/Image.ashx?key=potezmL9FvScT6cn0%2b2Jnnj3liguFvrFBT38H9ZMCHA%3d&color=%23000000' align = 'NotSet' /><input type = 'hidden' name = 'ASPNET_Captcha1_Expression' value = 'LL/VwR57t2e4qP5UmLxEDA==' /></span>
and when i click on SRC below error occure
The resource cannot be found. Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly. Requested URL: /Image.ashx
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272
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