Data Controls :: How To Get Name And Data Type Of Class Property In C#
May 15, 2013I need to read the property and the datatype from the classs file that i has been uploaded.
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May 24, 2010I have a class (SearchClass) in which i have Origin property which is a "Address" datatype. I want to use the "Search" class in my Search.aspx. I want to bind the City field data to a CheckBoxList, but i could not do so? If it is a straight property of Search class i could do so, but if it is a property then i could not. "I am getting error "City" is not a valid DataTextField of something like that. The point is it is not recongnised. I even tried to inherit the Address class from Search.cs class, but i just see blank data. Now i am trying to a different thing. i.e. Inherit the Address in Search.cs class and while pouplating the Search Results in to a List object i am also planning to set the data of City too, along with populating the whole Address objects and try to use it in my binding. Is there any other way to do this (i mean more efficiently)?
SearchClass.cs:-
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ADO.NET :: Adding Custom Property To A Data Class Using Linq?
Oct 9, 2010I tried to add a custom property to the data model:
public partial class Department
{
public string ExtensionIdName
{
get
{
return Extension.ExtensionName;
}
set
{
}
}
}
It seems that it works, but when I bind the data to a ListView it shows all the properties except the property I added manualy (ExtensionIdName).
ADO.NET :: Class 'system.data.datatable' Cannot Be Indexed Because It Has No Default Property
Dec 17, 2010I'm trying to get a custommembership to work and i have the following problem.
i get a error class 'system.data.datatable' cannot be indexed because it has no default propert.
Here's my function.
Public Overrides Function GetUserNameByEmail(ByVal userEmail As String) _
As String
Dim userName As String = ""
Try
Dim mymember As New Data.DataTable
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ADO.NET :: Class 'System.Data.SqlClient.SqlDataAdapter' Cannot Be Indexed Because It Has No Default Property?
Feb 22, 2011First time using a dataset instead of a data reader, and I'm trying to fill both a datalist on my page, and set the selected item value for a drop down list. The datalist on the page is displaying properly, but I get this errorClass 'System.Data.SqlClient.SqlDataAdapter' cannot be indexed because it has no default property. when trying to set the selected value for the drop down list. Why can't I get the selected value for the drop down list to work properly?
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TextReader Fetches Data - Base Class Of All Other Reader Type Classes?
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Forms Data Controls :: Conversion From Type 'TextBox' To Type 'String' Is Not Valid?
Sep 6, 2010I have a FormView that allows a user to register for a company event. I want to do a couple of things with this form.
1. I need to write this data to a MS SQL database
2. I need to send an email confirmation of their registration to their email.
I know how to do both of these things, but i am having trouble doing both at the same time.
It would be nice if I could do it in one click, but I coded it into two pages to try to help simplify it.
The first page allows the user to input their information into a formview and when they click the submit button, it places those answers into session variables:
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The Second page confirms the users information by taking those session variables and placing them into labels:
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However, after I place information into the formview on the first page, it throws up this error:
"Conversion from type 'TextBox' to type 'String' is not valid".
DataSource Controls :: The Given Value Of Type String From The Data Source Cannot Be Converted To Type Datetime
May 19, 2010I have this error "The given value of type String from the data source cannot be converted to type datetime of the specified target column." when I used sqlbulkcopy to do the transaction
Here is my code:
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Forms Data Controls :: ERROR - Conversion From Type DBNull To Type String Is Not Valid?
Jan 13, 2010I have a gridview which I'm trying to get the display of phonenumbers listed in a certain display format; (xxx) xxx-xxxx.If I have the code such as this, it displays the unformatted phone number and (000) 000-0000 for the null items.
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Forms Data Controls :: Generate Three Type Of Multi application Form For Each Passenger Type ?
Oct 23, 2010i 'm working on AIRLINE RESERVATION PORTAL and it's ok how to do this ?
the user most select the number of passenger and passenger's type (Adult,Child,Infant) for example he select 2-adult,3child,1-Infant
and go next , in the next page i have to generate three type of multi application form for each passenger type
2 adult application form
3 Child application form
1 Infant application form
depend on last selected vales , to save the applications in database
Forms Data Controls :: Gridview Rowdatabound Best Way To Add If Conditions For Item Tempate Type And Edititemtemplate Type
Apr 2, 2010I am having problem with rowdatabound, want to add if conditions intact, i am using teh following two if conditions and they don't look right. i found them on google.
If e.Row.RowState = DataControlRowState.Normal Or e.Row.RowState = DataControlRowState.Alternate Then end if
If e.Row.RowState = DataControlRowState.Edit Or e.Row.RowState = 5 Then end if
With datagrids i use these and they work excellent:
If e.Item.ItemType = System.Web.UI.WebControls.ListItemType.Item OrElse e.Item.ItemType = System.Web.UI.WebControls.ListItemType.AlternatingItem Then
end if.....
LINQ Group By And Compare Date Error Message - The Conversion Of A Char Data Type To A Datetime Data Type
Jan 27, 2011I have the following:
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I keep getting this error:
Message = "The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value."
What i'm trying to do is group by ContentObjectId and then get StartDate that is greater than today.
I'm using entity framwork and MS SQL2008
Forms Data Controls :: No Mapping Exists From Object Type System.String[] To A Known Managed Provider Native Type?
Dec 1, 2010I'm trying to pass email addresses from an array to a stored procedure, then display the results in my gridview. I get the following error:No mapping exists from object type System.String[] to a known managed provider native type.On this line: Dim DR As SqlDataReader = MyCommand.ExecuteReader
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Forms Data Controls :: Getting The Value Of A Data Item Which Is A Simple Data Type?
Jul 9, 2010I'm binding my object data source to a method that returns a list of ints (List<int>).
The object data source is being used by a DataList.
<asp:ObjectDataSource ID="objectDataSourceYears" runat="server" EnableCaching="true" CacheDuration="Infinite"
SelectMethod="GetYearsUnderArticles"
TypeName="Project.DAL.Services.UmbracoService"></asp:ObjectDataSource>
My question is:
How do i display the values of the ints. Normally, I would use DataBinder.Eval(Container.DataItem, "FieldName"), but what in this case, since the object itself is the value?
DataSource Controls :: The Type Specified In The TypeName Property Of ObjectDataSource Not Found
Jun 26, 2010I 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.
Getting Child Class Type From Parent Class Parameter In C#
Jul 6, 2010I am going to have multiple "types" of an object and I am really not sure how best to retrieve/save those multiple types without having a separate save/retrieve for each type.
My classes:
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I hope this makes sense. I'd rather not add a "type" column as I have this in another part of my database and I am not really liking it too much
UPDATE
Here's more info/questions for clarification, if necessary.
I'm really at a loss for how to incorporate them into my repository pattern.
When I call getEvaluation, I want it to return an abstract Evaluation, but I'm struggling with this code. Same with Saving - any insight on this would be excellent
UPDATE 2
Database:
Evaluations
Id (PK)
Comment
EvaluationType1
Id (FK to Evaluations.Id)
Field
EvaluationType1
Id (FK to Evaluations.Id)
Field
So, in getEvaluation(int id), I need to figure out what type of Evaluation they want. Does this mean I should pass in a type? Same is true in saveEvaluation, But I can do a switch/function map to see what Type it is.
Custom Server Controls :: Creating .NET UserControl With Collection-type Property?
Feb 21, 2011How can I create a UserControl with a collection-type property which has a collection editor?
I've a CompositeControl with an ArrayList-type property which has CollectionEditor-type designer. You can see this property on Properties window with a "..." button which launches a collection editor. This works fine and all but I want to apply the same to a UserControl and I've couldn't manage to pull it off so far. I've done the same thing what I've done with my CompositeControl but the property either doesn't even show on Properties window of the UserControl or shows as a single value property with no "..." editor button.
This is what I've done with CompositeControl:
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DataSource Controls :: Is It Possible To Use A Property Of An Object Instance Property For Object Data Source
May 3, 2010Traditionally with an Object Data Source, the wired up class will have its public properties available for binding (i.e. Gridview columns, etc.) which works well. But what if one of my wired up business objects has a property that is an object itself; can I drill down to a property on that object property and still use it?
So in additiona to the traditional:MyBusniessObject.OrderID...I want to use:MyBusniessObject.Customer.NameID
Your 1st response might be to just wire up the 'Customer' class, but I need properties both on 'MyBusinessObject'and 'Customer'. I do not think this can be done, as the ODS will not display properties on an object instance property. I have tried manually typing in the drilled down value as well, but that wasn't a success either.
Forms Data Controls :: Unable To Cast Object Of Type 'System.Web.UI.LiteralControl' To Type 'System.Web.UI.WebControls.TextBox'
Jan 5, 2010Unable to cast object of type 'System.Web.UI.LiteralControl' to type 'System.Web.UI.WebControls.TextBox'.
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Forms Data Controls :: Unable To Cast Object Of Type 'System.DBNull' To Type 'System.String'.
Oct 1, 2010Basically, what I did is that: I have a table in SQL database and some of data fields allow null. I built Objectdatasource through dataset. When I built update page using dataset. It generate the following error before showing the update page correctly. It seems I have issue to retrieve the null value from the database through using objectdatasource through dataset. Any suggestions?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
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