I'm using a SQL table for processing "batch" actions. However, each action depends on the success of a previous action. So, when I set up my actions in my Action table, each SQL row needs to have an ID that is linked back to the previous row that is created. How can I do this in Linq? Is there a better approach to handling dependancies in SQL?
View 3 Replies[Code]....
In above query I want to have top 10 rows as well as count of all rows.
I have a Silverlight site hosted in an asp page, it has been developed using vs2010 using .net 3.5 framework and silverlight 4. It all works on my dev box. However when I publish the site and get it deployed I get the error:
Could not load file or assembly 'Moe.Tactical.Ttas.Web' or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.
Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.BadImageFormatException: Could not load file or assembly 'Moe.Tactical.Ttas.Web' or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.
I have checked that the ISS asp setting are using 2.0.50727, and that all my references are using that runtime also.
I am not sure what to do to work out what the missing dependencies are at this point (I don't have access to the deployment box, I will have to go and sit with a system admin).
I'm using LINQ to query my database, and I don't want all the records returned all at once. Instead, user should be able to select Next 5 and Previous 5 using buttons. As of this moment I have selected the first 5 rows in the Item table in the databas like this:
private void ShowItems()
{
var items = (from p in db.Items
orderby p.ID descending
select new { ID = p.ID, Item = p.itemName,
Qty = p.quantity }).Take(5);
[code]...
i get a string value from the user and search the database to display the relevent information in the gridview. i should be able to do this iteratively and the output should be appneded at the end of the gridveiw. is it possible in any way?
[Code]....
I am very new to Linq , i want to check if the PrintingAdminSetting table has rows in it and then if it has then i want to get the value and assign it to txtMaxJobs textbox
below is teh code
, please let me know teh syntax to check .
var DC = new ServiceDataContext();
var rec = DC.PrintingAdminSetting.Where("").First();
txtMaxJobs.Text = rec.ParaName.ToString();
I have a datatable in which some of the rows contain a column with duplicate values. I need to be able to delete the duplicate rows and leave only one, doesn't matter which one.
The rows might look like this:
A, B, C, D
E, F, G, D
H, I, J, D
I need to delete two rows and be left with only one.
I am selecting some products from database and would like to show them in client's grid using WCF. Problem is I don't know how to pass selected collection to the client since my method can't return that data type.
My method:
public class Service1 : IService1
{
public ProductData GetData(int value)
{
using( NorthwindEntities NWEntities = new NorthwindEntities()){
[Code]....
All I am trying to do is query the database, then get the returned values, so that I can do some calculations. But, I don't understand how to get the values from the database row that is returned, so that I can assign it for usage.
I would like to do something where the logic goes: for the index of [1] (which is just column 1), multiply it by 2. For the index of [2] (which is just column 2), multiply it by 3.
Example below:
This does NOT work:
[Code]....
Using a LINQ query and an aspx page with an Infragistics webdatagrid control, I am generating data that look like this:The data come from my dataset: There is another column which is TobaccoUse and it is N, Y, N, Y, N, Y, etc for each row. There is also a column for the rate, and it is 147.32 for all rows (test data). But it could and most likely will, especially as the ages increase, be different, like $250 for a 25-year-old smoker but $200 for a 25-year-old non-smoker.
The grid I want to present needs to collapse every two rows into one, so you see one row for 0-17 smoker and non-smoker, etc. I do not know how to write this query. I don't actually know how to write any LINQ query but I've enhanced some existing ones, or understood them, but it's easier to read something that exists than write it new or change it dramatically, which I believe I need to do.
The query right now is:
Code:
var medRateBook = from rates in dsMedRateBookRates.Tables[0].Rows.Cast<DataRow>()
select new
{
DivisionNum = div.DivisionNbr.Trim(),
Age = rates["agedesc"].ToString().Trim(),
TobaccoRate = rates["calcratePreferred"].ToString().Trim(),
[code]....
is there a way to update a column for all rows in a collection using linq like sql does it
eg. UPDATE myTable SET myColumn='newValue'
Also weighing options as to whether there is better performance using linq to sql for this or straight sql to DB via table adapters etc.
i have create the object of
1 dataclassContext obj=new dataclassContext();
2 now i call the updateProc
int row=ob.MyupdateProc(QuestionID,peronID);
if(row>0)
{
do some thing
}
but row always retrun 0 even procdure do update in database
I have a MVC project wich uses LINQ to SQL as a data layer.
For example, I have a tables ProductGroups and Products. Product is a child of ProductGroup, so to get name of ProductGroup, in aspx-page I use constuction like Model.ProductGroup.Name.
But when I delete a ProductGroup there is appear a NullReference Exception in presentation page.
While I was using just DataSet and manual SQL-queries, the rows, there was not every joined-element present, simple were not put in query result.
I know that before delete Parent row I have to delete all children rows, it's correct way.
1. Is there a way to ignore rows which has null-elements without manual checking through "IF"?
2. Is there simple way to delete all dependencies without manual enumerating every related tables?
I have made a custom DataTable
Dim dt As New DataTable("RizPardakht")
Dim RowID As New DataColumn("tbz_GatiPardakhtID")
Dim FishNo As New DataColumn("tbz_FishNo")
[code]...
i want to update many rows with difference values inside table. i'm coding a timetable.
View 3 Repliesi have the following objects:
Event:
- EventID (PK)
- GroupID (FK)
- StartDate
Group:
- GroupID (PK)
- GroupName
What i need to do is select the last 5 events for each group using LINQ to Objects. I tried starting with:
[Code]....
But i'm not sure how i only take the last 5 per group.
The simple way of doing this is to get the groups and then have a property on that which returns the last 5 events but if i databind this i will have to use a nested Repeater/ListView. Ideally i would like to have a row foreach event.
i could bind the data form tables to dropdownlist in asp .net using linq.
ex:
var res=from n in dc. contacts where n.location==Hyd select new{n.Id,n.Name};
var res1=from n in dc. Morecontacts where n.location==Hyd select new{n.Id,n.Name};
dropdown1.Datasouce=res;
dropdown1.DataTextField="Name";
dropdown1.DataValueField="Id";
[CODE]...
I have records in database as
hotelid amenitieid
17774 7585
15636 7585
25363 7585
36933 11236
21412 45696
23521 65474
15636 65474
21412 65474
now in above, if i want only those hotelid where amenityid is 7585 and amenityid is 65474 and not any else hotelid , then how to use select query in datatable in asp.net
I have two Data Table, One data table contain Product-A information, and another data table contain Product-B Information, I want to get the uncommon values between the two data table, I would like to achieve this using LINQ, find the sample values below
Product Data Table
Product-A-Id ProductName
W10012 A
W10013 B
W10014 C
W10015 D
Sales Data Table
ProductId ProductName
W10013 B
W10013 B
W10015 D
X10020 AC
I want to find the uncommon data from both data table using LINQ, So find my expected Data Table result is
Result Data Table
ProductId ProductName
W10012 A
W10014 C
X10020 AC
I'm getting some Xml back from a service. I would like it to be the datasource of a grid view on my aspx page. Here is a sample of the Xml
<?xml version="1.0" encoding="utf-16" ?>
<ArrayOfTripTollCompleteDC xmlns:xsi=[URL]"
xmlns:xsd=[URL]>
<TripTollCompleteDC>
<TripTollId>5</TripTollId>
<DMSLaneModeID xsi:nil="true" />
<HOVOnly>false</HOVOnly>
<CreateDateTime>2010-06-07T15:54:01.023</CreateDateTime>
<ConfigVTMSDelaySeconds>5</ConfigVTMSDelaySeconds>
</TripTollCompleteDC>
and here is my code that parses the xml and tries to bind the grid. What am I missing here?
var retVal = service.GetTripDetailsByTripID(tripId);
var xmlTrips = XDocument.Parse(retVal);
var tripTolls =
from t in xmlTrips.Elements("TripTollCompleteDC")
select new {
TripTollId = (int)t.Element("TripTollId")
, DMSLaneModeID = (int?)t.Element("DMSLaneModeID")
, HOVOnly = (bool)t.Element("HOVOnly")
, CreateDateTime = (DateTime)t.Element("CreateDateTime")
, ConfigVTMSDelaySeconds = (int)t.Element("ConfigVTMSDelaySeconds")
};
grdTripDetails.DataSource = tripTolls;
grdTripDetails.DataBind();
I realize these are anonymous types. Is that a problem? I have verified the service is returning the Xml as stated above. Can anyone out there point me in the right direction? Just for completeness, here is the grid markup <asp:GridView runat="server" ID="grdTripDetails" />
I have one big DataTable with X rows. I want to select Y rows from it and bind them to a new ViewList. While doing it, I want to delete these rows from the DataTable (Having X - Y rows).
What is the best and fast way to do it?
I don't know if it is better to create a new DataTable to have the Y and after that bind them to a ViewList or something else?
I'm also looking for example in code how to select/delete rows from DataTable.
I came across a situation where a user selects no of rows from dropdown , depending upon the user input, automatically that no of editable rows should appear to input data...(maximum 8 rows only)
View 1 RepliesI have been handling everything in code which is not working consistently same in all scenarios.
View 1 RepliesI need to produce a from where I can add multiple parts. Each time a user enters a part number, the description should be populated. The user can then click add and this part and description will be shown below. They have the option to add as many parts as they require. Once all parts are added the user fills in some general info eg description and then once a submit button is clicked all part info will be inserted into a table and general info will be inserted into another table with one unique ID.
View 5 Repliesi have gridview and having few rows. each rows have checkbox,textbox,combo in each column. how can i loop through gridview using jquery and access each elements in rows in loop for collection the value at client side by jquery.
View 3 Replies