I am running a LINQ query which populates a list used by a DropDownList, I need to insert an "Unassigned" value to the list. The function below queries the values correctly from the db but does not insert the "Unaasinged" value to the list.
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I'm trying to implement this tag cloud:
[URL]
...and I need the replace the hard-coded values below with those coming from my database?
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I've created the following sql string which returns the data in the format expected string/int or value/key
SELECT Tag, COUNT(Tag) AS Counter
FROM dbo.CtagCloud
GROUP BY Tag
HAVING (COUNT(Tag) > 3)
ORDER BY Counter DESC
I have a dropdown list with hard coded values:
<asp:ListItem Text="One Day Shoots" Value="1" />
<asp:ListItem Text="Multi-day Shoots" Value="2" />
I want to use this to insert and edit values from a db. For example when adding a record the user selects 'One Day Shoots' and 1 gets inserted into the database. Then if the user goes to edit the page since the value in the db is 1 then the 'One Day Shoots' is selected.
One way I considered accomplishing this was by using a hidden feild - when the user selects something in the dropdown list the field is updated with the value, then when the user actually adds the record the value in the feild is submitted. I'm pretty sure this would work but is there a better way?
The simple website I am trying to build is a list of banks with their corresponding website. I also wanted the ability to add banks/website with the use of some text boxes and a button click event. I've got this fully working until I publish it. When I try to run it on the webserver it say it can not find the specified file c:windowssystem32inetservURLs.xml Now I understand the problem I just can not seem to fix it with out hard coding the path of the file into code.
Partial Class _Default
Inherits System.Web.UI.Page
Protected Sub btnAdd_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAdd.Click
' Load the Document
Dim Doc As New XmlDocument
Doc.Load("URLs.xml")
'Create a New Element
Dim bankNode As XmlNode
bankNode = Doc.CreateElement("bank")
'create and add sub elements for this node
Dim nameNode, addressNode, dateNode As XmlNode '
nameNode = Doc.CreateElement("name")
addressNode = Doc.CreateElement("address")
dateNode = Doc.CreateElement("date")
bankNode.AppendChild(nameNode)
bankNode.AppendChild(addressNode)
bankNode.AppendChild(dateNode)
'add the text data
nameNode.AppendChild(Doc.CreateTextNode(tbWebsite.Text))
addressNode.AppendChild(Doc.CreateTextNode(tbAddress.Text))
dateNode.AppendChild(Doc.CreateTextNode(DateTime.Today))
'add the new element to the end of the list
Doc.DocumentElement.AppendChild(bankNode)
'save it
Doc.Save("URLS.xml")
End Sub
End Class
I built a crystal report using crystal report 2008, and have it working fine aganist my test db. in my c# code that loads the report I put this in:
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but problem is when i pushed this change to production, the report was stilling pulling test data, even though the web.config entry (LocalSqlServer) was updated in production to use production db. Could I have setup the crystal file incorrectly? When I'm creating the crystal file and connecting it to the db, is there something that I need to check or uncheck to tell it I'm going to dynamically supply the db connection rather than having it use the one I used to setup the report?
As the title says then the question is relative simple however I cant decide whether a resource file with strings in is better than hard-coded strings...
View 3 RepliesI'm relativley new to ASP and am using VB for the coding. I have a page that has a few fields on it, one being a drop down list that get's populated from a SQL Server.
I used the GUI to generate this form (see below), the connectionstring:Prod1ConnectionString that is stored in the web config file is hard coded. I want to change that I use the connection string that is passed as a Session parameter. I've been looking for hours for an example of how to remove the connectionstring from the web code and place the proper code in code behind script on the load_page event.
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I have this ListView that has a Drop Down List.Everything works fine (I think/hope) except that the drop down list are not showing its result correctly.This is the code.
Front-End
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The code behind consist of the page_load and the ItemDataBound
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I'm having a problem with my Linq to XML query. I'm getting the result data I want, but it's nested so deep that there must be a better way.Here is my XML:
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I'm trying to get a list (simple string[]) of all Item IDs where Category Names contains "Other".Here is my Linq:
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Here is a snapshot of my result from Visual Studio:The results I want are there ("item100", "item400", "item500"), but buried so deeply in the results var.
How can I get the query to return a simple
string[] = { "item100", "item400", "item500" }
How can I use Order by on the result of a LinQ to SQL query ?
I have the following Situation:
Dim ret As New Object
ret = From status In tableStatus _
Select status.STATUS_ID, _
Text = Function_GetText(status.TEXT_ID)
Now I have to order this result on the field Text, has anyone an idea? (I can't use in my case Orde by Function_GetText(status.TEXT_ID))
How to randomize a LINQ query result?
Below takes 4 of the records but it won't randomize in every request. [:(]
Dim products = (From p In Northwind _
Order By Guid.NewGuid _
Select New With { _
.Name = p.Name, _
})
Return products.Take(4).ToList()
i want take a single value result from linq query
if i have :[Code]....
the variable result does not return nothing, only tostring() and similar how can i get a single result from linq query and use it in my ID variable?
New to Linq and Var type have a method where linq query is executed, want to return the result and assign it to GridView. but method don't take the return type as var.
So was wondering how do i return this query result?
Should i assign this result to DataTable first and make the method return type as DataTable?
Here is the code, This is what i want to do but not sure what is the right way
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for example,
var result = from category in myEntities.Categories
where category.UserId == userId
orderby category.CategoryName
select category;
What is the type of "result"? I casted it to an IQueryable variable and it worked except it did not have some of the methods normally available, e.g. Count(). In my program I have to cast it to some explicit types and then use the Count() method.
i have a new question: i read all the tutorials that i found but i cannot understand how to pass a result of a linq to entities result to the view so that i can display the results. My query is actually in the controller function ot the view, i would now loop the results and display them in the page. How?
View 23 RepliesI am new to this, and I am trying to implement a linq query similar to db.Genres.Include("Albums") command from
mvc music store using my current DB setup. I realize that the tutorial mentions Checlking the "Include foreign key columns in the method" when creating the tables in ADO.NET, but if I am using LINQ to SQL classes, then how can I obtain the same effect. And how do I use
db.Genres.Include("Albums") to simplify my life?
How do i check if linq insert/update query was successfull or how many rows were added/updated?
View 1 RepliesFor context: First of all, I am new to LINQ, as I have been using SubSonic for quite some time now.
I have two tables, Users, and Affiliates. They both have a very typical schema. The FK that joins them is the UserId field, which is in the Affiliates table. I want to create a LINQ query that pulls the Username from the Users table using the AffiliateId value. The AffiliateId is a primary key of the Affiliates table.
I have tried to accomplish this using many variations of the following code:
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In the above query, I expect to get a single row result set. However, I instead receive the entire table of results.
How can I make this work? I have yet to see an example or article out there to do what I am trying to do.
I have a listview that is showing its result by using a linq query. The linq query goes like this.
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* db.Varer: Varer is a table that contains basic product information like proudct name, product nr. etc. ** a.fk_kategori_id == CatParamId : I'm just saying limit the result according to the Category ID (a.fk_kategori_id). The category id is coming from a dropdownlist (CatParamID) *** Join: Besides the Varer (Product) table I also have another table, Sizes. This Sizes table contains 6 columns (ID_Sizes (int) primary key and the columns: OneSize, S, M, L, XL, XXL all are bit (true or false)). There is a relationship between Varer table and Sizes table. It says that I can only insert a value into the "fk_sizes_id - column" of varer table if that value already exists as primary key within the Sizes table. **** I'm starting by picking basic product values like productId, ProductName etc from the Varer (a) table ***** Then I'm picking the corresponding Sizes values (onesize, s, m, ...) from the Sizes table. Now within my ListView I'm showing the above result by using Eval, like this.
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And this works perfectly, but now comes the thing that is causing me trouble. I have the below drop down list (still within the ListView ItemTemplate):
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I want this drop down list to be populated with only those of the "linq query's Sizes table result" that are true. By "Sizes table result" I mean these
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I'm looking to translate an SQL query into linq
INNER JOIN Usrs ON
SAQ.UserId =
Usrs.UserId AND Scan.UserId =
Users.UserId
I'm not sure how to include the "AND" in the LINQ statement.
I am trying to display this query result in an aspx page.
It is very slow in loading. Here is the query. The inner query inside the outer quesry is the problem.(Please see the underlined part in the query) - (If I remove that part it is very fast.)
select
top 500
--This column is the issue
,Governing_Class=( case when exists (select top 1 tqc.class_code from
t_quote_class tqc
inner join t_quote_class_premium tqcm on tqc.class_code =tqcm.
class_code
where tqc.appid=pi.appid and tqc.class_code not in('8742' ,'8810','7380')
order by tqcm.premium_amt desc
)
then ( select top 1 tqc.class_code from
t_quote_class tqc
inner join t_quote_class_premium tqcm on tqc.class_code =tqcm.
class_code
where tqc.appid=pi.
appid
order by tqcm.premium_amt desc
)
......... From tables
i have tow query in one stored procedure
first query and the second one every of them return only value
i want to copy the result of tow values in a new row in new table
as i want to check on this tow values in ado.net
i want to get only this tow values as a row not first and secon query
only a row has result of first and second query results
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I want to use "if statement" in Linq query. How can I do this situation?
For example:
if txtAge.Text=="", I will not use that in Linq Query.
else txtAge.Text!="", I will use that in Linq Query.
I've build a linq query.But i want a random selection so its not always ID : 1,2,3,4,5,6 How can i randomize this var? I like to bind it to a repeater.//TagCloud:
Random rand = new Random();
var tc1 = from i in JumpTide.cms.menu.GetMenuItems(32)
select new
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I use the follwoing code to get a value from the SQL query. But now i would like to use some sql function like Sum() count() ... and i would like to get the result of that.
vb Code:
Dim constg As New SqlConnection
constg.ConnectionString = "Data Source=m......."
constg.Open()
Dim payrollquery As String '= ("SELECT * FROM xxxxx.nnnnn WHERE ID IN(" & ID & " ) AND sent = 'U' ")
Dim cmd3 As New SqlCommand(sqlstr, constg)
Dim reader As SqlDataReader = cmd3.ExecuteReader