Sum The Duration In Gridview List By Using LINQ To SQL?

May 27, 2009

I would like to display the total of sum duration in gridview by using LINQ to SQL. I have two tables, Users and Log_Times

Users
UserID-----Name
1------------Bob

[Code].....

pass through this problem and Im looking forward for the best response toward it.

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Display Duration Only Hours:Minutes:Second In Gridview Asp.Net By Using LINQ To SQL?

May 18, 2009

I want to display the duration only Hour, Minutes, and Second in data Gridview by Subtract TimeCheckOut from TimeCheckIn in ASP.NET using LINQ to SQL Here is code behind:

[Code]...

In Line 3 in function, Dim dif as TimeSpan = DateTime.Now.Subtract(Duration) which give only the duration of Hour, Minute, and Second from TimeCheckIn until DateTime.Now. However, I want to have the duration from TimeCheckIn until TimeCheckOut only in Hour, Minute, and Second.

I know that the FieldDisplayDuration function is totally wrong logic, but I just want you to get my point only, and also it could be the code sample for those who want to calculate the duration of the employee from the hire date. Finally, Let's get back to TimeSpan by Subtract TimeCheckOut from TimeCheckIn in gridview problem, How can I do that?

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Convert A List Linq Expression To Defined List Class?

May 26, 2012

y have this class

Private Class MyClass
Public Property propertyOne() as String
Public Property propertyTwo() as String

[code].....

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.net - Create New Distinct List(of T) From Existing List(of T) Using LINQ?

Jun 1, 2011

How can I get a new distinct list from an existing list using LINQ? This is what I have so far and it is not distinct but does give me a new list.

Dim tmpQryColumn = (From a In _allAudits
Select New CheckBoxListItem
With {.Id = a.AuditColumn, .Name = a.AuditColumn}
).Distinct()
_columnList = New List(Of CheckBoxListItem)(tmpQryColumn)

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.net - Searching A List Of Objects In An Object List Using Linq?

Dec 22, 2010

I have 2 classes

Public Class Shipper
Public Property ShipperID As Long
Public Property CreateDate As DateTime

[Code].....

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Create New Distinct List(of T) From Existing List(of T) Using LINQ?

Mar 12, 2010

How can I get a new distinct list from an existing list using LINQ? This is what I have so far and it is not distinct but does give me a new list.

Dim tmpQryColumn = (From a In _allAudits
Select New CheckBoxListItem
With {.Id = a.AuditColumn, .Name = a.AuditColumn}

[code]......

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Finding Items In One List That Aren't In A Second List Using Linq

Jan 25, 2011

I have two generic lists, named ListA and ListB. Both ListA and ListB could potentially have duplicate items. What I would like to do is use LINQ to grab the items in ListB that are not in ListA, but I'm unsure how to do so.

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Linq - Create A List Of Integers From A List Of Objects?

Nov 23, 2011

I'm trying to create a list of days(integer) from a list of dates(date).

I tryed to do this....

[Code]...

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Loop Against A List And Fill Another List From Its Data Using Linq

Jul 29, 2010

This is what I want to do as seen in C#(loop against a list and fill another list from its data using Linq)

[Code]...

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LINQ Order By Sort The Gridview Themselves

Mar 30, 2011

I have a LINQ Query:

[Code]...

This works great and sorts on L_Name. But I am trying to allow the user to sort the gridview themselves so I am passing in the SortExpression as a string. But I don't know how to incorperate the SortExpression into the LINQ Query. I tried Order By c. & SortExpression but that did not work.

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Sum Up Specific Columns In Gridview Using Linq?

Mar 19, 2012

how to sum upan specific columns in gridview using linq? I can't find anything in Google regarding this topic.

I tried this but not exactly what I want to be the output.

Dim total = Aggregate rowItems In Gridview1.Rows _
Into Sum(Cdbl(rowItems("AMOUNT")))

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Populate GridView Control From A Linq To SQL DataSource?

Jul 22, 2009

If I used a generic list Class to hold data objects that I am pulling from SQL Server using Linq to sql to populate a datagridview would I need to make any modifications to the datagridview control to accomodate multiple columns or would I need to make any modifications to the generic list class to accomodate the multiple columns in a row that is typical of a record in SQL Server? And one more thing which I believe is the easy part. To bind the list to a datagrid view would I just use the datasource property of the datagridview control.

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Getting List Of Items Not In Parent List Using LINQ

Mar 28, 2011

I am writing app in vb.net

I have two variables one with list of RoomRate and other with list of RoomTypes.

We have RoomRates and RoomTypes linked with RoomTypeInfo variable insite the RoomRate.

So how do i find the RoomTypes which donot have the RoomRates Defined.

My Sample Code:

class RoomType
property UIN as integer
property Title as string
end class

[Code]......

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XML To LINQ - Get List Of All Products From XML Doc And Put Them Into A Generics List

Jun 30, 2009

I'm basically brand new to LINQ. I've seen some examples that allow me to strong type objects using LINQ but I don't really understand them because they're in C#, which I guess lets you do different things with LINQ(I think?). [Code] I just want to get a list of all the products from the XML doc and put them into a Generics list.

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C# - Get List Of DataField In Gridview?

Jun 23, 2011

Is there anyway to get list of all DataField being bound in grid view.Using Stadard GridView with object data source.

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Array List Display In GridView?

Jun 3, 2011

<asp:GridView ID="gvNames" runat="server"
OnRowDeleting="gvNames_SelectedIndexChanged"
AllowSorting="true"

[Code].....

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Asp.net - Dropdown List To Filter Gridview?

Oct 21, 2011

I would like my gridview to be filtered by the dropdown list I have. It is pulling specific information from the database, so when you choose a value from the dropdown list, it should search through all the records and find only records with the ddl value in them.

The code that I am using in the codebehind for the SelectedIndexChanged is not right though. I get an error message saying 'Value' is not a member of 'Integer'. This is on the line dsCompanyFilter.SelectParameters.Add

It probably has something to do with the gridview not tying to the dropdown list properly, but I am not sure how to fix that code.

<asp:Content ID="Content2" ContentPlaceHolderID="body" Runat="Server"><br /><br /><br />
<asp:linkbutton id="btnAll" runat="server" text="ALL" onclick="btnAll_Click" />

[Code]....

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Setup A Dropdown List Over The Gridview?

Feb 27, 2009

how to setup a dropdown list over the gridview when I am in the editing mode? I would like use the code behind to bind the data after assigning to the data source... I am using Visual Studio 2008 ...

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C# - With LINQ, How To Transfer A List<List<string>> To List<string>

Dec 15, 2010

I got an object of List<List<string>>I need to bring this into a ist<string>I have no idea how to do this with LINQ.

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Data Combo Box With GridView Look In Its List Portion

Aug 5, 2009

I need a Data ComboBox having GridView in it's List Portion to have multiple columns in it. Purpose is Consider a 'Products Combo Box' where i want following fields to display

1] Product Icon

2] Product Name/Description

3] Product Price

4] Product Stock In Hand

where i can Format the 'Price' field to say Currency Type, 'Stock In Hand' field set to Particular ForeColors (at Run Time) depends on wheather the current stock is Negative or below minimum range or adiquate stock and so on. Similar controls are already available with MS Access so Why Not In VB?

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Dropdown List And Gridview Row-index/selectedvalue?

Jun 1, 2009

I have a gridview with a dropdown list that was created programmatcially. I want to have access to the selected value and to that row's Id. I have the dropdownlist created in *Gridview_RowDataBound* and I am able to use the text in the cell but my addHandler is never fired. Where do I give it the Add handler. I believe I can assign it the addhandler in RowCreated but how would I be able to set up the add handler if the button is created in rowdatabound?

[Code]...

It fits best in Rowdata bound because my dropdownlist items don't duplicate but I need to be able to use the addhandler I created.

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How To Sort GridView (Bound To List) With JQuery

Jan 31, 2012

I have a gridview in asp.net/vb and it is bound to a list - so there's no standard sorting available. I've found this jQuery plugin for sorting tables: [URL]. The plugin requires <thead> and <tbody>. The problem is, that my gridview only renders the <tbody>.

I've already tried
DataList.UseAccessibleHeader = True
DataList.HeaderRow.TableSection = TableRowSection.TableHeader
But this changes nothing.

My gridview markup:
<asp:GridView runat="server" CssClass="grid" ID="DataList" AutoGenerateColumns="False" AllowSorting="True" ClientIDMode ="Static">
<Columns>
<asp:BoundField HeaderText="SomeHeaderText" DataField="SomeDataField" />
<asp:BoundField HeaderText="SomeHeaderText" DataField="SomeDataField" DataFormatString="{0:dd.MM.yyyy}" />
[Code] .....

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Make A Gridview-like List View In Program?

Mar 6, 2009

What control should I use to create a grid like a ListView or Excel grid?

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Using Linq With A List(of T)

May 11, 2011

I am trying to use linq to query a List(of T) object, but when i type in my linq statement it comes back with the following error: Error57Expression of type 'System.Collections.Generic.List(Of BreakoutData)' is not queryable. Make sure you are not missing an assembly reference and/or namespace import for the LINQ provider.D:\Code\OLGA35\BreakoutByBusinessUnit.aspx17025D:\Code\OLGA35\

I have looked at my web.config and I have the imports:

<assemblies>
<add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral,

[CODE]...

I have put in several imports at the top of my page, but that hasn't helped

<%@ Page Language="VB" MasterPageFile="~/MasterPage.master" %>

<%@ Import Namespace="System.Collections.Generic" %>
<%@ Import Namespace="System.Core" %>

[CODE]...

I'm not sure what to do at this point.

Here is the code that is relevant:

Dim ListCollection As List(Of List(Of BreakoutData))
Dim GroupList As List(Of String)
Dim DataList As List(Of BreakoutData)

[CODE]...

Everything i've found on google just says to add in the System.Core, System.Data.Linq references, but as far as I can tell it all is setup correctly

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Using Linq With A List(of T)?

May 25, 2009

I am trying to use linq to query a List(of T) object, but when i type in my linq statement it comes back with the following error:

Error57Expression of type 'System.Collections.Generic.List(Of BreakoutData)' is not queryable. Make sure you are not missing an assembly reference and/or namespace import for the LINQ provider.D:\Code\OLGA35\BreakoutByBusinessUnit.aspx17025D:\Code\OLGA35\

[code].....

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Asp.net - Bind Radio Button List To Column In Gridview

Sep 22, 2010

I have radio button list in a gridview that needs to be bound to a column. If the value in a column is 0, the first radio button is selected, if 1, the other is selected. This is the code, some of it is partially removed because it is not necessary

[Code]...

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Change The Data Source Of A Dropdown List In A Gridview?

Nov 16, 2009

Is it possible to change the data source of a dropdown list in a gridview from another dropdown list selected index changed method in the same gridview?

for example I have a dropdown that needs to change its contents depending on what is chosen in the previous cell of the gridview, which is also a dropdown list.

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Displaying List In GridView - Contextual Menu Creation

May 20, 2010

I am doing my application with ASP and VB and I want to display a list off rows in a gridview and associate a contextual menu to each line.

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Dropdown List To Attach To Repeater That Will Filter Gridview?

Oct 28, 2011

This post is similar to one I have posted before about a dropdown filtering results in a gridview. Well now I need this dropdown to attach itself to a repeater that will filter results into a gridview. I have tried rptLetters.DataBind() in the code behind of the dropdown list, but that doesn't seem to be changing any of the letters at the top of the page when I click on different items in the dropdown list.The screenshot doesn't show enough of the products, but in this case it skips from G to L, and in the repeater the letters between G and L are still shown. I need to be able to get that repeater to recognize the letters that start each of the products associated with the company chosen.

<asp:Content ID="Content2" ContentPlaceHolderID="body" Runat="Server"><br /><br />
<asp:linkbutton id="btnAll" runat="server" text="ALL" onclick="btnAll_Click" />
<asp:repeater id="rptLetters" runat="server" datasourceid="dsLetters">

[code].....

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.net - Linq : Get Words From List?

Jun 8, 2011

I'm using a program see here: Visual Basic Regular Expression Question. I enter letters and the program returns all possible combinations from list. I want change this line of code...

Dim result = fruits.Where(Function(fruit) Not fruit.Except(letters).Any())

If I have this list:

Dim fruit as List(Of string) from {"apple","orange","pear","banana"}

And I input "p a p l e r" then it would return "apple" and "pear", but if I enter "a p l e r" then it would return just "pear". The idea is to return all words, which can be made of entered letters without duplicating any single letter. How to optimize this Linq code?

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