I need to find the count of records between the first and last day of the current month.I am very new to linq and having doubts in getting the count, below is the code i have written.
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I am facing an intresting problem now with entity framework. if i did a count of the some table with linq statement its give some count and it is not matching with my normal sql query count. my sql query returning count of all the records in that table where as linq query returns some count which is less than sql count. is this a problem with my edmx or table navigation properties..i do have some 5 to 6 child tables inside this table with foreignkey relation. will it do a join on each child table and returns only those records. I am very much confused and don't know how to slove this.
View 9 RepliesI have the code below which does work, but I need to add further functionality to it. The functionality I want to add to it is the text I have commented in the code below.
Dim objSQLConnection As SqlConnection
Dim objSQLCommand As SqlCommand
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs)
Dim intID As Integer = CType(Request.Form("ID"), Integer)
Dim strHeading As String = CType(Request.Form("Heading"), String)....
Before the if statement, I want to find out if the database already has records with the username in the strUser variable.
I have a table with 5 columns: ID, Session1, Session2, Session3, Session4. What I want to do is to display the number of same items from each column. Same item can't appear in more than one column.
ID Session1 Session2 Session3 Session4
-- -------- -------- -------- --------
1 Music Web Tech Future
2 Art Articles Search Introduction
3 Music Books Camera Phone
4 Music Glass Cup Future
5 Art Books Tech Future
6 Music Glass Cup Phone
I want to display it like this on an asp.net page.
Music: 4
Art: 2
Web: 1
Articles: 1
Books: 2
Glass: 2
Tech: 2
Search: 1
Camera: 1
Cup: 2
Future: 3
introduction: 1
Phone: 2
how would I construct a sql query and display them on asp.net?
I have a problem that I cannot seem to resolve. We are using an access database to store data from a Quality Assurance Tool. I need to calculate an average on a specific column in the table, however the SQL statement needs to count the number of records that contain "0.1" and divide it by the total number of records in the table. This data is then displayed in an ASP Page.
The field name is 1.
Here is the SQL:
StrSQL = "(Select Count([1]) FROM cservice Where [1]=0.1) / (Select Count([1]) FROM cservice) As questaverage "
I have a gridview and in this grid i allow paging with page size 10.Now I want to find the total number of records on every page index.For example on page index 1 I have 10 records and on page index 2 I have 4 record so how do I count the number of record I just mentioned above?
View 1 RepliesI have the following search query
// GET /Home/Results/
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Result(string searchtext)
{
var search = (from n in _db.NewsItemSet
where n.headline.Contains(searchtext)
orderby n.posted descending
select n);
return View(search);
}
}
The search works and displays a record if a record containing a keyword exists, I am struggling however to implement a feature where when the search is returned it says for example:
0 news items found
N news items match your search criteria: 'string'" displayed
(Visual Studio 2012 VB, MSSQL 2008)... Is there a way to count the number of records in a sqldatasource without displaying a grid on my page?
Code:
<asp:SqlDataSource ID="sqlMessages" runat="server" ConnectionString="<%$ ConnectionStrings:DBConnectionString %>" SelectCommand="SELECT * FROM [Messages] WHERE ([SentTo] = @SentTo) ORDER BY [MessageDate] DESC">
<SelectParameters>
<asp:SessionParameter Name="SentTo" SessionField="MemberID" Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
How can I get the number of records that are returned? another question I have a field "MessageStatus" how can I get the number or records that are listed as "new" as well...
Here is what I would like to display...
lblMessages.text = "Total Message: " WHAT DO I PUT HERE "Total New Messages: " WHAT DO I PUT HERE????
I habe a arraylist that can pass in the result of a quiz and once the user finishes this quiz, the result will be displayed in a gridbiew which is binded into a sqldatasource. In this gridbiew, there is this column which will highlight the the result of this qn which displays correct and incorrect. what i want to do now is, i want to count the number of correct answers. I want to count all the correct answers and bind it to a label in the same page.
View 2 RepliesIm new for LINQ, how can i count the records in this code
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So i can say Count records and its = PValue so i can use that in a EVAL(PValue) and get the total value of the records.
i need to create 2 temporary tables.The records inserted into the 2nd table is the same as that from table1.
Now, i am inserting some other records into table 2.what i need is, to retrieve the count of the recently added records into table2.How to achieve this?
I have a search textbox and when I type something to search, it shows up the lists of related items from database.
If I type "Zio" on textbox, it displays:
Zion, henry
Zion, khery
Zion, malle
Zion, henry
Zion, khery
Zion, henry
What I wanted: I want to count and display those records with the count values. e.g
Zion, henry (3)
Zion, khery (2)
Zion, malle (1)
How can I achieve this ?
How do I cound the records found by an SQL query? I have searched google and have only found ways to do so in vb.net. I need to know how to accomplish this in C#.
Below is what I have made so far...
Default2.aspx file...
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Default2.aspx.cs File...
[Code]....
Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs)
Label3.Text = GridView1.Rows.Count.ToString()
End Sub
Is there any settings in gridview properties....
I have sending messaged details in my sql data base.In my Grid view have the following columns,
Name Rollno MsgTemplateName No of messages Sent
Ameer 1 Pongal
Robina 2 Diwali
Ameer 1 Pongal
Robina 2 Diwali
Ameer 1 Diwali
Robina 2 Pongal
I want to look like the follwing,
Name Rollno MsgTemplateName No of messages Sent
Ameer 1 Pongal 2
Diwali 1
Robina 2 Diwali 2
Pongal 1
I am using this sql query "Select name,rollno,tempname,count(*) from stumsg group by name,rollno,tempname"
I have a trivial issue that I can't resolve. Currently our app uses Linq to retrieve data and get a basic integer value of the row count. I can't form a query that gives back a count without a 'select i'. I don't need the select, just the count(*) response. How do I do this? Below is a sample:
return (from io in db._Owners
where io.Id == Id && io.userId == userId
join i in db._Instances on io.Id equals i.Id **select i**).Count()
;
I want to display no. of rows a table contain from database on label, how can i do that..
View 1 Repliesim trying to count the amount of users inside a chatroom, im trying to count a specific row using LINQ to SQL.
Heres the code
DataRowView dataRow = ((DataRowView)e.Item.DataItem);
string roomId = dataRow["RoomID"].ToString();
ChatRoomDataContext db = new ChatRoomDataContext();
var query = from c in db.ChatLoggedInUsers
where c.RoomID.ToString() == roomId.ToString()
select new { };
foreach (var c in query)
{
}
Where " select new { }; " is, is left blank as i am not too sure what goes there. I tried adding c.UserName.Count() but i got an error. what i need to put into that space to count the amount of records in the UserName column?
I have to add the total no of present in grid view.
E.g.
id name status1 s Present1 s Present1 s Present total 3
I need to show the present days as total.
I use below code in SP to count row of table and show it in label
ALTER procedure [dbo].[showMessage]
as
begin
SET NOCOUNT ON
select (select COUNT(id) from Message) as Message
,(select COUNT(id) from MessageM) as Messagem
end
[CODE] ...
Now I want define other label that shows total of these two table rows .I mean if in Message Table has 7 row and MessageM tabel has 8 row so
LblNMR =7 and LblRM =8
Now I want define LBLMAIN that in this label show LBLMAIN=15 total of 2 tabel Rows
How I can do it ?
I am wonder how I can generate a result table from linq to sql as below
Car sales table
Toyota small
Toyota passenger
Toyota small
Honda small
Honda small
Honda passenger
Honda small
result table
Brand small passenger total
Toyata 2 1 3
Honda 3 1 4
GridView1.DataSource = (from dtCarSales.AsEnumerable() .....
I have
Chart1["Series1"]
Chart1["Series2"] ....
It has multiple Series and each series has Several Data points.I want to find the count ( not sum but number of datapoints ) of Data points in all the series using LINQ.Currently i do
var count = from s in Chart1.Series
select new int[] { s.Points.Count };
And then for each thorough count and find the sum. Is there a better way to do this
I have 2 table's
Table 1: Daily_item
Fields: Key_Guid Drescription Count
1 test 3
3 new item 2
I want to insert records form table 1 into table 2 but using the count field to duplicate the Key_guid record the new table.
New table example:
Table 2
Key_guid
1
1
1
3
3
In my asp.net gridview i want to count how much peoples are qualified in MCA and display the value in a lbel in same page. The qualifications are in COURSE field in my table anme persadata
table name is PERSDATA
PNO NAME COURSE COMPANY
121 RAJU BCA TCS
234 RK SINGH MCA TECHNO
525 P RAJ MCA KELTRON
325 ANIL BBA BPL
235 KUMAR MCA TATA
How do I translate the following query into LINQ to SQL?
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