I'm new onto LINQ and im working on a asp.net application which uploads a requisition from a preformated text file that is coming from another application.
I have a datareader like so but when it encounters a NULL database value, I get the error message "Conversion from type 'DBNull' to type 'String' is not valid."
Dim myReader As SqlDataReader = myCommand.ExecuteReader() Dim yValues As New List(Of Double) With myReader If .HasRows Then While .Read yValues.Add(Double.Parse(.GetValue(0)))........
I need to parse through the aspx file (from disk, and not the one rendered on the browser) and make a list of all the server side asp.net controls present on the page, and then create an xml file from it. which would be the best way to do it? Also, are there any available libraries for this?
For eg, if my aspx file contains <asp:label ID="lbl1" runat="server" Text="Hi"></asp:label>
my xml file would be <controls> <ID>lbl1</ID> <runat>server</runat> <Text>Hi</Text> </controls>
I have not been able to create a function to take a long nvarchar (8000) with a delimeter to return the results in a table . I have a script version that works as a query. I plan to use the Function in a Select * FROM table WHERE FirstName IN dbo.ListOfItem(@InputList) Is the following posible in SQL Server 2005?What is wrong with syntax? Is there a better solution?
I'm running .NET Framework v4.0.30319 so the Framework shouldn't be an issue. I'm not using any DLL files or bin directories. How do I setup the IIS/Virtual Directory if I'm using Forms Authentication for the whole website using VS2010?
Description: An error occurred during the parsing of a resource required to service this request. review the following specific parse error details and modify your source file appropriately.
Parser Error Message: Could not load type 'ACAWebApplication.Pages.State_Carrier_Search'.
I am writing a plugin to help with a current ERP system we have that I am not allowed to modify the data structure at all. The table I am dealing with has over 100 columns and I am wanting to set my linq object propertychanged event and submitchanges or do I really have list out each property and set it equal to the new one?Below is an example of what I am trying to do:
Like that I have large number of controls on my form. I have dought, if I assigned like this, db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Last_Name.ToString(); to every control, then I have set of controls like,
My question is that, for each control the Stored Procedure called or not? If it is yes then it is time consuming and I need to use LINQ to DataSet or LINQ to Object rather than to call SP for each control. What is difference between LINQ to DataSet and LINQ to Object?
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'm trying to parse a HTML file to retrieve certain info in my asp.net app. I've looked at the html agility pack but found that also quite difficult. :-) As my HTML should be pretty standard I'm hoping regex is quick and easy. I need a regex that will look through the html file (which I've loaded into a string) and find the below line and take out the DATATOEXTRACT (which will be some sort of text, the name of a recipe in this case) so I can put it into a variable:
public IEnumerable<Customer> GetCustomers() { Table<Customer> custObject = context.Customers; IEnumerable<Customer> filteredCustList = from customer in custObject select customer; filteredCustList; } GridView2.DataSource = utilLinqClass.GetCustomers(); GridView2.DataBind();
(no errors at build time or at compile time) Error I am getting is: An attempt to attach an auto-named database for file App_Dataaspnetdb.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
I occasionally get errors in my aspx files which are caused by problems with the designer file. When this happens I delete the designer file, right click on the aspx file and select "Convert to Web Application".
Usually regenerating the designer file works perfectly, however sometimes I get an error which simply says "Could not parse the file pathToFile.aspx". When this happens there are no useful errors displayed in the error panel which would indicate what the problem is. I got this error a little while ago, did some searching and found a blog which explains how to get round this problem. It suggests closing the file, cleaning the project, rebuilding then tring again. VS should now give you a more useful error message which pinpoints the problem. This has worked for me in the past, but doesn't work all the time.Has anyone found a better way of identifying the problem in the aspx file when the "Could not parse file" error is displayed?
I am trying to find duration of an mp4 file using direct show component of windows using the Dotnet wrapper(directShow-lib 2005). But the method i used was GetDuration of IMediaSeeking interface. But this returns zero as duration.After searching i found the following statement:"It doesn't matter whether it's in a container or not, it only matters whether you have a parser/reader for it. There is no stock DirectShow parser to read raw H.264 files and no third-party one I can think of. Also, whether IMediaSeeking would work with such a raw file is implementation-dependent. Last, most H.264-related filters use MPEG2Video or VideoInfo2 and neither works with MediaDet, so you would have to build the graph yourself."
The project I'm working on allows an end-user to modify CSS code to integrate the application as best possible. Most of the CSS values are stored in a database and need to be retrieved and parsed dynamically. I setup a Style controller, and gave each stylesheet an action, and then passed the configuration data through to the View. I set the ContentType to "text/css" and then generated the stylesheets. This works fine, but the problem I'm running into is this: none of the code works in the application. I include it in the head code, but it doesn't parse in the code. An example of what I do is this:
When I include the CSS code in a partial view and include it using the ViewModel (wrapped in style tags) in an action, then everything works fine. It is when I try to parse this as a separate file when it does not work. Is there something I am doing incorrectly? Or is there some kind of glitch?
How i can make the normal search string to sql server full text search parse, because when we are user enyer search text "how to run windows schedule in C#", in database we have article to to this, but data not returning and sometime is say error in key word and etc.
I have a docx (also in pdf format) that i have to put up on a site. Well word completely junks it up I spent 4 hrs fixing one file and my next one is bigger.
I have 3 tables. Table3 has a 1 to many relationship with table Table2. Table2 has a one on one relationship with Table1. have the ID filed of 1 record in Table3 and I need all the records in Table1 that match that ID to have their field 'Used' set to true.So for example I have Table3 ID = 124 and that means that I need records with IDs 2 and 3 in Table1 to have their 'used' field set to tru
I have a user control I'm building that has a table layout with two sets of radio buttons, like:
how I could use a radiobuttonlist for each set of vertical buttons within this layout, unless I used a rowspan on each col, but that seems problematic from a layout perspective? I would rather use a RBL from a programming standpoint.
If I instead used a set of radiobuttons with a groupname for each, how do I get/set the selected button (for each set) from outside the UC?