Sorting Gridview On A Calculated Field?
Apr 15, 2011
I have a gridview that displays a calculated field, based on a db source field it populates with.
can i sort by it? i can't seem to figure out how to do it?
example:
my templatefield looks like this:
<asp:TemplateField HeaderText="Category" SortExpression="category" >
<ItemTemplate>
<asp:Label runat="server" Text='<%# BuildCategory(DataBinder.Eval(Container, "DataItem.category")) %>'
ID="lblPrice"></asp:Label>
</ItemTemplate>
</asp:TemplateField>
where category is party of the datasource, but what gets displayed is a calculated value - which is different from the category.what can i put in the "SOrtExpression" to make it sort by the new value - taht gets displayed?
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Nov 22, 2011
I need to create a page that will display gridview based on user wants (programmatic ally).Basically I have a list of columns then the user will choose for the list. I need also to have sorting function
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Jun 30, 2009
i have data coming from sql server with two columns like total items, total packed items. Now in datagridview i want to show another column to calculate %age.Total Packed Items / Total Items Is it possible to add calculated column in datagridview?
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Jul 13, 2011
I have a DataGridView that call a stored procedure. One of the fields is a calculated field, ie Quantity * Price.When I run the stored proc on the server, the calculated field returns a result that shows 2 decimal places to the right of the decimal point. When I run the stored proc in the VB application to fill the DGV, the result in the calculated field shows up to 8 places to the right of the decimal place. Is there a way that it will show only 2 places in the application?
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Dec 3, 2008
I have a RDLC report with a list that contains a table. I require a calculated column whose value depends on values from previous rows. Outside of a report I accomplish the same thing using code in a DataGridView's DataBindingComplete method.
From within a report how do I refer to specific cell values from previous rows? embedded code, but I have not had luck (#Error).
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Feb 7, 2011
There are lots of questions about this but I've not been able to solve my problem using the answers to any of them (after many, many attempts..)
I'm working in vb.net creating an asp.net web application. I have an SqlDataSource and a GridView on my page.
I want to change the DoNotMail boolean value represented by a Gridview checkbox and automatically update in the database if the checkbox is checked from 0 (False, Will Mail) to 1 (True, Won't Mail) here is the code I used. [code]...
is it possible to do a two way sync on the entire gridview when the user hits a button so you don't have to do an update every time a row is changed? because the user might check the box and then check another box then uncheck a box and it would be a lot of updates...
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Aug 31, 2009
gridview sorting in VB.NET: I have a gridview with autogenerate columns = true
<asp:GridView ID="GridView1" FooterStyle-BackColor="Aquamarine"
AutoGenerateColumns="true" AllowSorting="true" OnSorting="Gridview1_Sorting"
AllowPaging="True" PageSize="12" OnRowCreated="GridView1_RowCreated"[code].....
I've declared the sort event handler (OnSorting="Gridview1_Sorting" ), and it works fine.However, then I change the column title (headers as they are in the dataset which I get from the database)
GridView1.HeaderRow.Cells(0).Text = "Document" ' "PROC_UID"
GridView1.HeaderRow.Cells(1).Text = "Process Step" ' "PROC_DOC_UID"
When I set the HeaderRow text, I can no longer click on the title to sort (it also is no longer underlined).How do I correct that?
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Feb 25, 2011
I have done research on how to manually create sorting in a grid-view and none of it is thorough enough for me to follow. I need more of a step by step solution, like what event should my sorting code go in, how would i enable the headers to allow sorting. normally, i just have .net do this but for some reason this time it doesn't allow it, maybe because i am not using a datasource.that's my code that creates a datable and then binds to the gridview.
Function toptable()
Dim reader As SqlDataReader
cmd.Parameters.AddWithValue("@yeartoget", DropDownList1.SelectedValue)
[code].....
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Mar 19, 2009
currently I was able to Sort GridView and it is having several page. what my brilliant boss want is to SORT the records per page... as in per page... (ex. page 3 of the gridview contains 50 records of data (G-J), she want to sort the 3rd page for the records to become (J-G) just for the 3rd page...)
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Aug 5, 2011
I re-wrote this to make it more readable. If you want to skip right to the chase, look at the ALL CAPS comments in the code blocks. All necessary code has been included for debugging. I've searched multiple forums (including ASP.NET), and the MSDN library and cannot fix this >.<
[Code]....
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Jul 9, 2011
GridView SORTING of DYNAMIC Columns and Data Source Scope
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Jan 26, 2011
I have ASP gridview bound to an Entity Data source which works no problem, however when I try to programmatically change a header columns text, it appears to break the styling and will not allow sorting either, below is how I am trapping and changing the Header row column text.
Protected Sub gv1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles gv1.RowDataBound
If e.Row.RowType = DataControlRowType.Header Then
'retrieve the values from the userdeftable
e.Row.Cells(6).Text = App.Session.Company.UserDef3
End If
End Sub
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Aug 11, 2009
I have a windows form with a gridview bound to a lisbox. I need to know how to get the field in the gridview with prices to show a total in a textbox, also on the form.
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Oct 23, 2011
I am trying to bind a SQL XML field to my gridview. [code]...
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Feb 23, 2011
I have a gridview with a template field and inside the template field is a checkbox field.My question is how do I capture the event when a checkbox is ticked and how do I reference that row which has been ticked?
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Mar 1, 2012
In the RowDataBound event of an ASP.NET Gridview I am trying to read the value of a Label in a Template Field. I would prefer to capture this value in the RowUpdating Event, but for some reason I seem to recall that it is not possible. Here is the ASP...
<asp:TemplateField HeaderText="Translation" ItemStyle-Width="250" >
<ItemTemplate>
<asp:Label ID="Label11" runat="server" Text='<%# Bind("lang_String") %>' Width="250px"></asp:Label>
</ItemTemplate>
Here is the VB.net code that I am trying to figure out....
Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound
If (e.Row.RowState And DataControlRowState.Edit) > 0 Then
[code]....
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Apr 4, 2012
I have some of these events in my gridview custom coded. But the real issue here is that I store a previous record, that is, the record that was being changed, or the old.value and I store it in another column. So when the user enters say "< newValue >" without the quotes, the aspx validator rejects the input as dangerous.
I can disable the validation, and html encode the value as it gets written to the db, but when I display the value back in the gridview in the "Previous Value" column it appears like this...< Neutral > semi-colons missing because this site decodes.How I can encode and decode inline in ASPX?How can I encode this template field that is getting entered into a gridview?
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("lang_String") %>'></asp:TextBox>
</EditItemTemplate>
allow certain html characters to be entered into this field only without turning off validation for the entire site.I do need this to apply to the entire column.
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Feb 15, 2012
I want to populate a checkbox field in a gridview.
I am using the Checked='<%# Convert.ToBoolean(Eval("Inactive")) %>' statement but the issue that I am facing is that in the database some records contain NULL for Inactive. If it encounters a 0 or 1 value it works fine but if NULL it throws an exception.
Kindly guide me how to populate the checkbox so that it should be unchecked even if the field is null.
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May 8, 2012
I have limited knowledge on VB coding. I am now creating a system which allow customer to select exhibition event and booth number they want and next reserved which day they want to rent.By default, in GridView control can add checkbox Field but it only generate 1 checkbox for 1 row of data.
As state in the title, I have no idea how to generate the checkboxes for every field in database call D1,D2,D3,D4,D5,D6 and D7, each carry value 0 by default.Now I want every single field have a checkbox to allow customer select which day they want to reserve and retrieve their checked value to stole into corresponding D1-D7 field, checked value will update value 0 to 1.Next, how should I coding to store the checked value into database? in default.aspx or default.aspx.vb? generate checkbox instead of using gridview?What I want
My coding:
<%@ Page Language="VB" MasterPageFile="~/MasterPageMember.master" AutoEventWireup="false" CodeFile="member_view_event_list.aspx.vb" Inherits="member_view_event_list" title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">[code].....
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Nov 22, 2011
I have a value in one of my gridview column which will determine if the entire row's value should be in red color. I did the below but somehow every single row is red colored.
Protected Sub uigvList_RowCreated(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles uigvList.RowCreated
If e.Row.RowType = DataControlRowType.DataRow Then
[Code]....
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Apr 3, 2012
i need to create a pop up window whn the user clicks the button link of the gridview
the gridview is a project details table and the button field should giv the abstract of each project.
on clicking the abstract of a particular project,that abstract should be displayed as a pop up.
is it possible to do it thru de popup control exteder of the ajax contrl toolkit?
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Sep 28, 2011
I have to disable all the controls on my gridview for business purposes.[code]...
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Jun 7, 2011
I have a page which has a GridView on it, which is populated from a database. Some of the columns in the GridView have text boxes, as well as Checkboxes.When the user saves the page, the page may error if they have not entered their data correctly. At this point, I need to re-display what they have entered already so they can simply make the correction instead of having to change everything from scratch again.
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Nov 21, 2010
I'm working in vb.net creating an asp.net web application. I have an SqlDataSource and a GridView on my page:
<asp:SqlDataSource ID="msgUnread" runat="server"
ConnectionString="<%$ ConnectionStrings:edinsec %>"
[code]....
As you can see I was playing with WithEvents but that didn't seem to help. In the above code all I was trying to get was some kind of reaction to the clicking of a checkbox - but nothing happens (no errors, either).
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May 18, 2010
i just got it in the internet and edited it..
Dim xlApp As Microsoft.Office.Interop.Excel.Application
Dim xlWorkBook As Microsoft.Office.Interop.Excel.Workbook
Dim xlWorkSheet As Microsoft.Office.Interop.Excel.Worksheet[code]....
what I want to do is have a column name in the excel worksheet which is not included in the code..i'm getting the data from a datagridview but it only shows the data in the excel.. i also want the field name of these data to be shown..another, as you can see in the code given, the directory is fixed.. what do i have to do to choose a directory to save my work? and also, i have many gridviews and whenever i'm exporting my work to the excel worksheet, it always overwrites my work.. i want to choose the directory to save, also show the field names, and make a separate worksheet for every gridview..
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Mar 12, 2012
I'm having my program sort an excel sheet by a few columns. However, it is only sorting by the first column not the rest that I specify.ere is my sort code below:
myRange.Sort(Key1:=myRange.Range("A:A"), Order1:=XlSortOrder.xlAscending, Key2:=myRange.Range("G:G"), Order2:=XlSortOrder.xlAscending, Header:=XlYesNoGuess.xlYes, Orientation:=XlSortOrientation.xlSortColumns)
[code]...
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Aug 20, 2011
I have a WPF ObservableCollection which is bound to a ListBox and I have a Sort() method which when called will convert the ObservableCollection to a List(Of T), and undertakes a sort based on a date/time column within the collection.
The data is sorted, even when new items are added to the ObservableCollection, however the date/time isn't being correctly sorted. The data is sorting based on the date however it is very much random when it comes to the time portion. The following is an example of the outcomes I am experiencing:
[Code]...
Is there anything that I am doing incorrectly in this method that would cause the time portion not be included in the sort? Is there a better way of doing a sort?
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Feb 23, 2010
This comparison shows the different values of the known good checksum calculation (c#) as used by my client and what I 'hoped' was the vb.net equivalent. How can I get 405 rather than 513 as I currently do?
For i = 0 To length - 2 Step 1
cksum += sendFrameData(i + 5)
Next i
[Code]....
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Oct 1, 2011
i have three cells in a datagridview third cell gives the result of multiplying first and second cell.When i reload or populate this data from datatable into that datagridview value comes like 40.00. with two decimals. For example
58.00 -------->i need only 58
58.78--------->i need exact 58.78
The only problem is to remove the decimals if they are 0.
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Feb 2, 2010
I am attempting to develop a Gradebook that one can use to modify grades and have an average calculated at the end.When you first open the form, you see the database fields in the DataGrid (socSecNumber, firstExam, secondExam, finalExam)I have a button to save the changes made here. The exam grades are null in the database.This seems to work fine, however I have a problem with the calculated column I want to add. I want it to display the socSecNumber and the average for that student. Instead, I get all four fields in addition to the semAverage field. Also, all the grades come up 250 if I fill all the fields in with 100.[code]
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