Forms Data Controls :: Gridview Showing Values From Two Tables Accommodation And Pic (left Join On Accommodation)
Nov 19, 2010
I have a gridview showing values from two tables accommodation and pic (left join on accommodation). If there is no pic uploaded I want to display the row without the pic. So in the gridview I first check to see if the picid is null, if it is i don't render any 'a href' code , if it's isn't i do.
The problem that i'm having is that instead of the image showing up in the gridview itemtemplate i get
','_blank','toolbar=no,menubar=no'))" >
Here is my .aspx code
SelectCommand="SELECT pic.picid, aspnet_Users.Username, accommodation.location, accommodation.type,accommodation.description, convert(varchar,accommodation.createdate,101) as createdate
I'm having trouble doing a left outer join with multiple generic lists tables. I've been researching for hours and there isn't a whole lot out there on this subject and VB (at least what I found).
I have the following Linq query:
Dim DataForGridview = (From s In S1 _ Join c In C1 On c.ID Equals s.ID _ Join v In V1 On v.ID Equals s.ID _ Select New With { _ .dataFieldID = s.ID, _ .dataField1 = s.dataField1, _ .dataField2 = c.dataField2, _ .dataField3 = c.dataField3, _ .dataField4 = c.dataField4, _ .dataField5 = v.dataField5 _ }).ToList()
S1 has a count of 30. V1 has a count of 20. C1 has a count of 10. This query joins the three but ends up with a count of only 10 based on the datakey ID and, of course, only shows those 10 in the gridview.
I would like to show all 30 from S1 in the gridview with blank fields wherever V1 and C1 do not have data. From what I've read I need to do a left outer join. However, all examples I've found are with two datasets.
I've tried multiple times expanding on what I've found by changing it to a group join and also adding the .DefaultIfEmpty() property in the query, but nothing is working.
How can I change the above query to a left outer join with these multiple tables?
I'm trying to build a linq2Entity/gridview function for a forum, that draws data from multible tables.The result should be: Get the latest 10 threads that user(xx) has replyed in, that is not disabled or has a subject that is not allowed.Include information on the last post, thread owner user, and last post user, in each thread. ere is my code... is returns the correct threads and some that should not be there.
I have some text files I need to parse in order to display my data, and what I have now are two text files with lots of redundant data. Instead of this I would like to replace the redundant data with a number referencing the text in another text file.
have table COLLECTIONS and table CLOTHES.As an example, when showing the items on Listview, collection HAWAII would be written on the top, and its texts and images on the itemTemplate.Then, collection WINTER and its texts and images on the itemTemplate.And so on.P.S: I´m connecting the Listview visually thru SQLDataSource, not programatically.How can i do it ? On the layout template using a JOIN on the SQL Statement ?
I have a particular scenario where I am populating two data tables seperately. These datatables have one field which is unique. What I need is to join these two datatables on the basis of that one field and get one datatable. I do not want to merge, I need to join. And I can not join in SQL before populating the data Tables.
I need to retirve data from two tables...when i click a value in dropdown list, i need to retrieve values from two tables based on that id( which i have selected in dropdown)..so when i have written query ( "Select assign_issue.issue_assigned_to, assign_issue.created_on,assign_issue.last_Date, issue_register.issue_desc,issue_register.issue_Priority from assign_issue INNER JOIN Issue_register ON assign_Issue.Issue_ID = issue_register.Issue_ID where issue_register = '" + ddlissueid.selecteditem.text + "'")..query is executing ..when it comes to dr = cmd.executereader()..Dr is unable to read..it is showing false when i trace..unable to read into while loop.
I have a listview that shows the user the details of the members who have sent friendship request. The table from which the data come has two fields namely, sender_id[id of the one who sends friendship request] and receiver_id[id of the one to whom the request is sent].
There will be two columns in the listview. The first would show the pic and the name of the user. The problem is that how am I going to show the pic and the name if the table from where the data come does not contain these info. I know that the sender_id can be used to fetch the pic and name of the sender, but how should it be done?
Earlier I would do something like <%#Eval("fieldName")%>. But in the above described scenario the field is not present in the current table but the other one.
t1 : id FirstName Age 1 Joe 22 2 James 33 3 Bart 28 t2: id LastName 1 Coymer 2 Manes
I can combine the data from the two tables using an inner join.
1 Joe 22 CoyLap 2 James 33 Manes
The problem though is that the person "Bart" with an Id of 3 is left out because he does not have an entry in the second table.So how can I include Bart in the output in such a way that the output might look like this:
1 Joe 22 CoyLap 2 James 33 Manes 3 Bart null null
Or spaces can instead appear for Barts last name and age instead of null.Basically I just need Bart in the output as well even though he has no age and last name.
I have the following LINQ query that does a left join:
var results = from v in ctx.dat_Visitor join sp in ctx.vwSP on v.lu_Mentor.ID equals sp.ID into sp2 select new {
[code]...
My problem is that this LINQ query times out on me. I even upped the default timeout from 15 seconds to 120 seconds and it still times out. dat_Visitor has no more than 10 records in it, but vwSP (which is a view) has somewhere around 100,000 records. I know for sure that the timeout has to do with when I attempt to actually return sp2 in the results. If I change my LINQ query to not return sp2 in the results, then it is quick. Without sp2 the query looks like such:
var results = from v in ctx.dat_Visitor join sp in ctx.vwSP on v.lu_Mentor.ID equals sp.ID into sp2 select new { Visitor = v.Name, Tot = sp2.Count() };
Lastly, I'm using the 3.5 framework, but I am having serious thoughts about upgrading the website to 4.0, since I could then use DefaultIfEmpty().
I need to join some tables to get the matching records. I often have to ask around to see how certain tables could be joined. Is there any way to query the information schema or some thing else to see what columns/values match in certain tables in order to figure out how tables should be joined.
I have 9 tables i need data out of.. 8 of those tables will always just return 1 row of fields that i need. the 9th table can contain many records.. So what i need is a few fields out of each of the 8 tables and then ALL records from the 9th table.. so i know that because there will be multiple records in the 9th table returned, that the fields i pull from the other 8 tables will contain duplicate information and thats fine since i will be displaying the individual records from table 9 on their own page..So everything could be for the same vendor, except for the date in the 9th table that contains specific dates and details about each record returned.When i review the execution plan im getting an yellow exclamation icon on a nested inner join and has this message as the warning: No Join Predicate
Here is what i have, but is returning incorrectly, way to may records, seems to be stuck in a loop.. then below that, i have one that returns the correct number of records, but everything except one column is duplicate, all the TR columns should be unique in the values stored in them.. the rest should all be duplicates, just because its the same vendor, so all the other information will be generic information about that record.
[Code]....
This FROM and WHERE return the correct number of records, but the fields are all duplicated except the last column with is transaction_date, seems that the 3 TR fields are being populated with the first records data or something.. not sure.
I want to get data from Projects(which have CourseId) and related CourseName from Courses table.
I have written following code:
var projects = from n in db.Projects join c in db.Courses on n.CourseId equals c.ID orderby n.Name select new { Project = n, Course = c }; return View(projects.ToList());
and I get error:
The model item passed into the dictionary is of type 'System.Collections.Generic.List1[<>f__AnonymousType22[ProjectManager.Models.Project,ProjectManager.Models.Course]]', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable`1[ProjectManager.Models.Project]'.
What I need to do in Controller and in View to display this data?
I have two tables namely "CategoryMapping" and "PartnerCategory"...The partnercategory table has foreign key with categorymapping on CategoryID...
let us say categorymapping should be filed first then partnercategory should be filed based on the categories defined in categorymapping. For example my two tables have the following data:
I have a form with several DropDownlists and TextBoxes, Each dropdownlist depends on the selection of the previouse one.. and there is a submit button. Once the user clicks on it, information entered by the user is displayed in a GridView and saved as well in the database. The GridView holdes information from two tables I used joining) , but once I click on the Submit button I receive this error: Arithmetic overflow error converting varchar to data type numeric. The statement has been terminated. Description: 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.
Exception Details: System.Data.SqlClient.SqlException: Arithmetic overflow error converting varchar to data type numeric. The statement has been terminated. Source Error:
[Code]....
Imports System.Data.SqlClient Imports System.Web.Configuration Partial Class Members_MembersCalculator Inherits System.Web.UI.Page Protected Sub CalculateButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles CalculateButton.Click Dim objConnection As SqlConnection Dim objDataCommand As SqlCommand Dim c_manu, c_model, c_date As String Dim sSQL As String Dim ConnectionString As String Dim c_factor As Double Dim c_result As Double Dim c_milage As Double Dim c_id As Integer Dim c_year As Integer c_manu = ManDropDownList.Text c_year = YearDropDownList.Text c_model = ModelDropDownList.Text c_milage = MilageTextBox.Text c_factor = FactorDropDownList.Text c_id = CarIDDropDownList.Text c_date = CarDateTextBox.Text c_result = c_factor * c_milage ConnectionString = WebConfigurationManager.ConnectionStrings("Carbon_free_ConnectionString").ConnectionString objConnection = New SqlConnection(ConnectionString) objConnection.Open() sSQL = "Insert into car (Manufacture, year, Model, car_factor)" & _ "values('" & c_manu & " ', ' " & c_year & " ',' " & c_model & " ', ' " & c_factor & " ')" objDataCommand = New SqlCommand(sSQL, objConnection) objDataCommand.ExecuteNonQuery() objConnection.Close() objConnection = New SqlConnection(ConnectionString) objConnection.Open() sSQL = "Insert into car_Result (car_id, car_Result_Date, Car_result)" & _ "values('" & c_id & " ', ' " & c_date & " ',' " & c_result & " ')" objDataCommand = New SqlCommand(sSQL, objConnection) objDataCommand.ExecuteNonQuery() objConnection.Close() msgLabel.Text = "Your records have been calculated successfuly, Thank you." 'CarDateTextBox.Text = "" 'MilageTextBox.Text = "" CarGridSqlDataSource.DataBind() CarGridView.DataBind() End Sub End Class
how to bind selected values from two tables to gridview data source, that two tables are from two databases. i created a view by using these two.But error is getting with this query,that is invalid object derivdtbl_1.Expr1. how to fix this?
SELECT dbo.Station_Channel.St_id, dbo.Station_Channel.lid, dbo.Station_Channel.Edit, dbo.Station_Channel.lChannelName, dbo.Station_Channel.lShort, dbo.Station_Channel.lPosition, dbo.Station_Channel.lTransformData, dbo.Station_Channel.lUnits, dbo.Station_Channel.lDecimalPts, dbo.Station_Channel.parameter, dbo.Station_Channel.function_value, derivdtbl_1.Expr1 FROM dbo.Station_Channel CROSS JOIN (SELECT MAX(Fecha) AS Expr1 FROM MeteoStation.dbo.Datos) AS derivdtbl_1 WHERE (dbo.Station_Channel.Edit = 1)
