Sorting A Databound Columns?
Mar 7, 2012I have a datagridview in VB.NET in which i have few columns which are data bound . How to sort a databound column which contains names ?
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.net - Databound DataGridView Not Sorting Date Correctly?
Nov 19, 2010My DataGridView is not sorting my date column correclty and it doesn't seem to be sorting it by String either. The column is bound to a date property, all is done using the designer.The set which I'm viewing it on is 424 entries long, there should be two entries for each date and they should be next to each other (regardless if sorting by date or string)The last few dozen entries are sorted correctly but the initial entries are not.Initially every second entry at the start is correct. Here is an extract if some of the sorting it does.(The beginning of the sorted grid is on the left, and the end of grid is on the right)
View 1 RepliesSorting By Columns With Datagridview?
Nov 1, 2010Is it possible to sort a datagridview by column when a user clicks a column header? I have the sort method set to automatic under each column, which from what I read, is what I need. I know this has to be insanely easy....
View 7 RepliesDataGridView - Removing Columns And Sorting?
Mar 10, 2009Is it possible to remove from a datagrid view very first "column" i.e. the row selector and also to remove the ability to reorder the columns ?
View 3 RepliesDataGridView Sorting On Columns Not Working?
Apr 28, 2010I'm using vb 2005, seems sorting is not working if I change the data by code. For example, if I have a simple form with only one datagridview and one button, grid was sorted on column 1, then I press the button to randomly change data in column 2, then use column 2 to sort, the display order is not correct, but after the button click, if I click on a cell, the grid will re-sort by itself, and get the right list. I know DataGridView is not for Editing data...
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim dt As New DataTable
dt.Columns.Add("C1")
[Code] .....
Error In Sorting Datagridview's Columns?
Oct 7, 2009I have a datagridview and all its columns are set to Double Datatype. The problem is when I changed the value of cell and try to sort the column, it shows me an error "Object must be of type Double." I check each cell but all its values are number and I can sort all the columns before I edit one cell. But when I tried to change the value of only one cell and sort the columns, the errors will show. Its weird because I only removed 1 digit of the cell value and I cant sort at all.
Code:
Dim col As New DataGridViewTextBoxColumn
col.ValueType = GetType(Double)
[code].....
Sorting Columns In A Listview Object?
Jun 22, 2009First off i just want to take a bow to all the vb gods out there..I am trying to implement the sorting class form article 319399 in the knowledge base [URl]..on step number 6 it says to "Paste the following code into the ColumnClick event for the ListView:"so i created a sub to handle the ColumnClick event
[Code]...
VS 2005 Datagridview Columns Not Sorting?
Sep 23, 2010I have a datagridview that is bound to a datatable. When the form is displayed, the column headers have no sort glyphs and the columns will not sort.
I don't see a property on the form that controls column sorting - at least not one that's obvious. This is an area of the code that another developer wrote originally, so maybe there's something going on that I'm not aware of.
Use Custom Comparer When Sorting By Multiple Columns?
Apr 7, 2011I have a ListView (GridView) that I want to sort by 2 columns, so if 2+ items have the same value in Column 1, it sorts by Column 2. Pretty easy. But empty strings show up at the top when sorting A-Z. I'd like to move them to the bottom. I made a comparer (IComparer) that takes care of this, but I'm not sure how to use it.[code]...
View 1 RepliesAsp.net - GridView SORTING Of DYNAMIC Columns And Data Source Scope
Aug 5, 2011I 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]....
Combing Multiple Columns For Sorting With Generic Member Expressions
May 20, 2011I've followed examples here and here to create a generic sort with memberexpressions, but how I'm supposed to add a "ThenBy" clause, or combine multiple columns for sorting in the methodcallexpression. Ideally, the ThenBy should go before skip, but it can't because it can't see the orderby clause that I made with the methodcallexpression. GridSortExpression is a Telerik class - it just describes which column and direction the query should be sorted.
Here is what I have right now:
Dim exp As Expressions.Expression(Of Func(Of Product_Catalog, Boolean)) = PredicateBuilder.True(Of Product_Catalog)()
exp = exp.And(Function(e) e.Chapter_Price > 30)
Dim sortExpression As New List(Of GridSortExpression)({New GridSortExpression() With {.SortOrder = GridSortOrder.Descending, .FieldName = "Id"}})
[Code] .....
GridView SORTING Of DYNAMIC Columns And Data Source Scope?
Jul 9, 2011GridView SORTING of DYNAMIC Columns and Data Source Scope
View 2 RepliesSorting A Datagrid That Has Some None Bond Data Columns Looses The Non-bond Data?
Jul 24, 2009I have a few forms that the user uses to select data records and then perform some analysis on them.So the selected records are presented in a datagrid and each in turn it reviewed and the analysis data added to the extra columns, works very.
However, if the user clicks on a column to sort the grid, the unbound fields are not sorted with it, just blanked out. I can prevent them from sorting, but it would be nice if it could sort the full grid.
Excel Sorting Is Only Sorting One Column Not Multiple?
Mar 12, 2012I'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]...
Wpf - Sorting Observable Collection Incorrectly Sorting?
Aug 20, 2011I 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?
DataGridView, Set Up Columns, Populate Data Table, Bind, But Not Using Columns Created In Code?
Oct 26, 2011I'm using VB.net 2005. I have working programs that I populate DataGridViews with something like the following:
[Code]...
Add/subtract/divide/multiply Certain Columns And Place The Information Into Other Columns?
Nov 30, 2010My goal is to connect to my database either manually or using an sqladapater, and get information from two of my databases on sql server 2005. Then I want to take this information and on run-time begin to add/subtract/divide/multiply certain columns and place the information into other columns. I can do this in queries, however, I want to do it on run-time what is the best way to achieve this.I had some of this working, but I just want to start fresh and see how you would go about doing this.
[Code]...
.net - Aggregate The Columns To Group On The Period And Sum The Count Columns?
Jun 29, 2011I have the below Linq query that is returning the data but I need to aggregate the columns to group on the Period and Sum the Count columns. How do I go about doing this?
LINQ
from t In tblTimes
join h In tblEngineeringDashboard_CADMachinesCounts on t.ID Equals h.TimeID
Order By t.Period
[code].....
Adding Columns And Modifying Columns In Access Database Using NET/SQL?
Oct 15, 2009I am using the following code to alter an table imported from an Excel spreadsheet
Dim SQL As String = "ALTER TABLE receipts ADD payee integer, account integer, category integer, reconciled boolean"
Dim dataread As New OleDb.OleDbCommand()
dataread.Connection = Connection1
[code]....
Both ExecuteNonQuery() actions yields the exception message {"Syntax error in field definition."}The error message does not happen with the first if the boolean column is not there (I tried Tes/No as a definition - but that also failed.The second query to modify the ID column from autonumber to integer I assume fails because it is a Primary KeyHas?
Organize Columns - One Table Which Have Tree Columns (ID, Number, Name)
May 23, 2011Imagine the following scene: I have one table which have tree columns (ID, Number, Name).
A Select query result on this:
code:
Now, the user deletes the Number 3 and 4. So, now the Select query is going to be:
code:
And I want to have:
code:
How can I organize the column?
Asp.net - Averaging Columns In A Table - Ignoring Certain Columns
Feb 21, 2011I've the following code which successfully makes an average for all the columns from a table. What I need to do though is ignore certain columns in this equation.
Dim totalNumber as Double = 0
Dim count as Integer = 0
For x = 0 To xyz123.Tables(0).Columns.Count - 1
[Code]....
Averaging Columns In A Table - Ignoring Certain Columns?
Feb 28, 2010Averaging columns in a table - ignoring certain columns
View 2 RepliesHow To Use Something That Functions Like Label Box But Can Handle Several Columns And Columns?
Feb 18, 2010What should I use and how to use something that functions like a label box but can handle several columns and columns? Something that looks like this. [code] Name | Age | Birthday are headers and the letters are variables
View 5 RepliesAdd A New Row To The Database Using Databound?
May 16, 2011I'm trying to add a new row to the database using databound textbox's but they keep adding blank rows to the database. If i use textbox's that arnt databound the info will get added
This doesnt work when using a databound textbox - it simply adds a blank datarow with no information
vb
Dim row As DataRowView = CompanyDetailsBindingSource.AddNew() row("CompanyName") = CompanyNameTextBox.Text() CompanyDetailsBindingSource.EndEdit() TableAdapterManager.UpdateAll(MainDataSet)
However if i use a textbox that isnt databound it works and the data is added to the database
vb
Dim row As DataRowView = CompanyDetailsBindingSource.AddNew() row("CompanyName") = TextBox1.Text() CompanyDetailsBindingSource.EndEdit() TableAdapterManager.UpdateAll(MainDataSet)
Is it possible for all the databound textbox's to be added to the database in one go without having to manually add them to the code?
e.g. Why wont this add a new row and insert all the data in textbox's to the database but if i change the AddNew to EndEdit it will update all fields at once?
vb
Me.Validate() Me.CompanyDetailsBindingSource.AddNew() Me.TableAdapterManager.UpdateAll(Me.MainDataSet)
Get The Value Of A Databound Textbox?
Aug 31, 2011Normally I would create a form and handle the binding of controls myself. However, the current table I'm working on has 180 something columns so I decided to use the BindingSource to control the amount of code I have to write. This has all worked well until I try and call the value of one of the textboxes.
So.. I bind my form like so: Me.MyTableAdaptor.Fill(Me.MyDataSet.MyTable)
Whenever I call a textbox e.g.: Dim myVar as String = txtName.Text myVar remains "" or Nothing. I just can't get myVar to equal what is typed into the textbox that is databound.
Is there anything I can do. I know that binding isn't the recommended use, but I really could do without having to write the insert, select, and update commands for 180+ columns.
Add New Item To Databound Combobox
May 2, 2012I have a combobox that is bound to a dataset (via datatable and datatableAdapter). The combobox displays the current data in the table as it should.I have programmatically added the string "ADD..." to the list at the form.shown event:[code]when the user then click on (select) "ADD...", i open a new form to allow the user to add a new item to the list.The code i have behind the "ACCEPT" button on the new form stores the NEW value to the DATASET. I have verified this by previewing the data in the dataset.My problem is getting the combobox to reflect the changes to datatable to which it is bound.[code]
View 7 RepliesAssign A Value To A Databound Textbox?
Apr 24, 2011I am experiencing aproblem in my VB.NET App. The salary form is a databound form in my app to a linq data source. There are several text boxes to enter and calculate different salary fields. e.g. Basic Salary, Budgetary Allowance and Adjusted Basic Salary...
all the above three controls are bound to the datasource. now on the Leave events of the Basic Salary and Budgetary Allowance there is a function to calculate Adjusted basic salary.
The problem is i dont see the calculated amount in the adjusted basic salary but i see only the underlying data in the database instead of the programmatically calculated amount.
C# - Nest Databound DataGridViews In .NET?
Mar 21, 2011I think I already know the answer to this, but I figured it would not hurt to ask.
Is there any possible way to nest Databound DataGridViews in .NET? What I would like to have happen is for each row in the DataGridView to have a button to expand, which would then give me a DataGridView underneath that. I would like this nested DataGridView to also be able to do this, so I could go n levels deep with them.
Is this possible with the .NET Winforms standard DataGridView? (Or another standard .NET control?) I have seen people reference some third party controls, however they are really expensive, and I don't really want to go that route.
Cannot Re-Bind Databound ComboBox
Dec 27, 2010I have cascading data-bound combo boxes, however, if the second of the two boxes does not have the value, I am trying to change the data source of the original process to the default selection.
However I am getting errors no matter what I try to do to get the combo box to clear.
cboSubSystem.SelectedIndex = -1
cboSubSystem.DataSource = Nothing
Call cboSubSystem.Items.Clear()
[Code]....
Currently: "Items collection cannot be modified when the DataSource property is set." at the Items.Clear If I try to remove the clear, I get "Cannot bind to the new value member. Parameter name: value" at the valuemember set
Databound Combobox And Autocomplete?
Jul 18, 2011I have a combox that is run-time bound to a table that is run-time built and populated from a text file. I have set the combobox autocomplete mode to suggest and the source to list items, but only the 1st item will work. Ok so here's the code:
Private Sub SetStateComboBox()
'set autocomplete for combobox
state_cmbx.AutoCompleteMode = AutoCompleteMode.SuggestAppend[code]....
The file is a text file with a list of the 50 states and their abbreviations in the format : stateName - abbr.Now what happens is the data is displayed correctly, but when I begin to type a letter for the autocomplete the only letter that shows anything is the "a" and it will only show the very first item in the text file.Everything else does not display with the autocomplete, but does show in the list. I have tried variations such as adding the data as items like this:
Private Sub SetStateComboBox()
'set autocomplete for combobox
state_cmbx.AutoCompleteMode = AutoCompleteMode.SuggestAppend[code]....
This way does not allow any autocomplete when I begin typing but everything is in the list. I've also tried converting the table to a customautocompletestring and still the same results.The only way that I have been able to get it to work is be entering each state as an item: state_cmbx.items.add("Michigan - MI"), then it works correctly.Also the combobox dropdownstyle is set to dropdown, and I'm using visual studio 2010 ultimate and coding using VB.