I have a datagridview with four columns, the first of which is date. I was wondering if there was a way to sort all of the data by date using code. I was thinking about doing a bubble sort, but I feel like there must be an easier method.
View 4 RepliesI am a programmer from Uruguay. I have read the other similar questions about my problem, but nobody has given the answer I need. I use VB .net 2005 and its datagridview. I bind it to a dataset which is populated with a table of MySql. And when I sort the numeric columns, it sorts them as string, not numbers. I have tried casting the data to integer in the sql statement, but it doesn`t work. I changed the format of the column of the datagridview to single or long but it didn't worked either. I really can't believe it is happening, it is a so common need! I thingk It should be totally automatic.
View 12 RepliesI have a vb.net app that uses a table from an ESRI shapefile. The user the datagridview is populated based on a query. Now I need the datagrid to sort on three different fields, as in Street Name => Address Number => Unit. (I can sort on one field)
I've tried to use code samples on the IComparer class but am just not getting there from here. I may be missing something really really simple. (so I attached the code sample I'm using).
My 'workaround idea' is to add a column when the datagridview is populated and concatonate the three fields together. Then I can sort on that new field. I can add the column, but haven't figured out yet how to concatonate the values in the three fields into this new one. And I'm concerned about speed.
I've been asked by a local window cleaner to design a small utility that can display a grid of customer data, sort them, and then export it out as a formatted .txt or rtf file.
View 14 RepliesAt the moment I have a DataGridView (bindet to a DataTable) and some labels. If DataGridView's event SelectionChanged occurs,the labels should be filled with the information of the selected row -> No problems.But if I sort the DataGridView and click on a row, the informations in the labels are wrong.
Event:
Private Sub DGVMain_SelectionChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DGVMain.SelectionChanged
If DGVMain.SelectedRows.Count > 0 AndAlso Not Me.DGVMain Is Nothing Then[code].....
I have a problem with sorting in datagridview. I load an xml file in a datagridview and I sort the collums for check. when I try to sort it according to it's number the sorting goes like this:
[Code]...
I have two columns in a datagridview, one is a year and the other is a month. These two form a date, but unfortunately the structure in the database I'm forced to use is that of two integers. I need to sort the rows by date, using these two integers. I tried creating an unbound column with a date, but sorting this way seem quite difficult. So, I thought I could do a multicolum sorting by year first and then by month using two columns
View 1 RepliesI have a DataGridView that is being populated via SQL with one table and is being filtered by Stock Code. I need to sort the view of one Stock Code by Nutrient names, but the sequence number is in anther SQL table. it would be easy if i could put the sequence in one table but that's not possible
View 2 RepliesI have a datagridview that is bound to a dataview. I use a textbox to sort the list of data in the datagridview. Once the list is sorted I want to click on a row to populate the textboxes in order to update the data. Problem is once I sort the data I click on say row 3 and it pulls up the orginal data before the data was sorted in the datagrid view. For instance:
Before Sort:
1. betsy
2. james
3. john
After sort:
1. john
2. james
3. betsy
If I double click row 1 it will pull betsy info into my textboxes instead of john. I currently refresh my datagridview after every letter is entered into my textbox. I also reload my dataview and rebind the dataview with the datagridview.
How do i deactivate sorting in my dgv after a certain button is clicked?
View 1 RepliesI am automating a datagridview that will hold the name of an object in one column and the number of units in the second column. The datagridview keeps recognising my numbers as a string and doesnt sort them accordingly. Any ideas how to inform the datagridview to sort by numeric?
View 3 RepliesI need to sort datagridview row sorting. There two color in the datagridview rows, some is yellow, some is white. How can I sort them by yellow rows shown first then only show white color rows?
View 1 RepliesIs 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 Replieswin app where user loads files from win explorer into a datatable bound to a datagridview. After loading the files, each filename is parsed and split into different fields and finally sorted w.r.t. to two its columns. One column is filled with error codes and depending on these, the cells that contain errors will be marked redIt's a three-step process where I just described step one.In step 2, the user will edit the data and hopefully correct the errors, cell by cell, according to some rules and here it's where my problems start. Since I sort the table in step one, sorting is activated and each time the user changes a value in one of the sorting columns the table will do a resort, messing up some of the editing done by the program (cell background color etc.) confusing the user.I have tried to use several of the datagridview events (mainly the cell and the row events) and also to turn-off the sorting by setting its dataview.sort="". Neither of my attempts has been complete successful so far.
View 2 RepliesI need to have "press" grouped (all jobs for press #1 then #2 then #3). Then have the grouped press jobs sorted by date ascending (all Mondays jobs together, Tuesdays jobs, etc.)When I change: Me.~my~BindingSource.Sort = "print date" to Me.~my~BindingSource.Sort = "print date, press"My datagridview groups the press rows together and lists everything in ascending order according to todays date just fine, except it won't show the first job with today's date at the top of grid. It will start somewhere within the today's date entries. I then have to scroll up 4 or 5 rows to see the first job with today's date.
But if I change my PC's calender/clock to any other day (past or future) it works perfect, first job at the top, all presses grouped together. Set clock back to current day and time and again it will start somewhere within the today's date entries.
Me.~my~TableAdapter.Fill(Me.~my~DataSet.~my data~)
'---Sort by "Print Date"---
Me.~my~BindingSource.Sort = "print date"
[code].....
Is 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 RepliesI'm trying to sort multple colums in the DataGridView which is unbound. I would prefer to sort by using a DataTable/DataView but for some reason another developer in my team experienced other problems relating to sorting so he abandoned using the DataTable to fill the grid :(
Here is the senario: I want the user to be able to choose which columns they want sort on. The way I envisaged was to show a form with a listbox, a grid and 3 buttons (Add to sort, Remove from sort and Apply Sort).
The list box would be populated from the parent form grid column headings.
The grid will show the columns and sort direction.
Button 1 would add the selected item of the list box to the grid.
Button 2 would remove from the grid the selected row.
Button 3 would Apply the Sort in the order of the grid and the columns SortDirection.
Now I looked at How to: Customize Sorting in the Windows Forms DataGridView Control using the IComparer [URL]
how I can use the IComparer to sort on multiple columns that a user has specified or another way to sort on multiple columns using unbound data.
How would I sort or filter the datagridview so that only cells that are color.red are viewable? What I have now shows all of the red and not red cells with the values <=0 else color.black. But if I were to put this on a button I would want only to see the color.red cells on the gridview.
Try
'##############################
For Each dgr As DataGridViewRow In dgProducts.Rows
'##############################
If CInt(dgr.Cells(4).Value) <= 0 Then
dgr.DefaultCellStyle.ForeColor = Color.Red
Else
dgr.DefaultCellStyle.ForeColor = Color.Black
End If
Next
I'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] .....
I 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].....
I need to be able to sort a DGV image column by clicking on its header. I set the sort mode to automatic in the designer, but when I click on the header nothing happens. Are these columns sortable? If so, what do I need to do?
View 5 RepliesI have an unbound datagridview that I populate with data. When the user clicks on the column head the datagridview is sorted - which is fine for alphabetic fields but I have a column that contains numeric fields and goes from -100 to +100. This is sorted incorrectly by the number (all the 1s first then all the 2s and so on, ignoring the minus sign). How do I get it to sort my column numerically?
View 9 RepliesI have a datagridview with a column called "Total Price". This is set to a string value type because I need to always show 2 decimals. For example:
4,3
must be in the datagridviewcolumn:
4,30
So I use string.format for this. However, now I have a problem with sorting because the column is a string value type and numbers get sorted like this:
50
4000
40
300
30
20
10000
1
How to override the sort method or something that is called when a user clicks on the column header and the most effective way to sort it programmatically?
I've been searching for days for a solution. I've scoured the internet and other forums and tried so many things at this point that I think my brain may explode.I receive a large XML file from a third party vendor. I have converted the XML file to a a dataset and use the dataset to fill a datagridview with a specific table. I do not have a schema from the vendor and the XML file does not contain any data type information. The datagridview populates fine but all columns are defaulted to type string. This presents a problem when sorting columns that should be numeric - they sort by string comparison instead of logically numeric. I've tried numerous ways to attempt to convert the datatable columns to integer to no avail.
[Code]...
I have a DataGridView that I am adding rows to manually. After adding rows & then sorting the cells seem to be sorted by string, E.g.
100
200
3
40
500
I have multiple columns with numbers available, is it possible to sort by Integer?
I 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.
My 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 RepliesI am using VB.NET 2005 and my problem is to sort binded DataGridView using numeric sorting (but for strings). As i understand problem is the same as in:http:[url].......or in http:[url].......My DataGridView.Datasource = DataTable. I want DataGridView to be able sorting numericaly when Column headers are clicked. This common function must be very easy, but unfortunately it is not :(. How can i get write sorting? I don't find answer in internet.Link1 is without explanable and i think it is for unbinded DataGridView and link2 is for for C+ or C#.
Examples:
Real Sorting when clicked on "Ports" header (other columns need write sorting too):
"COM1"
"COM10"[code].....
I have a datagridview bound to an Access table. When the user selects a cell, a series of sql statements are executed to display information related to that particular cell. I initially put this code in the SelectionChanged event. However I soon found out that it was displaying information related to the previous selected cell. The following blurb from MSDN library confirms this.
"When you change the value of the CurrentCell property, the SelectionChanged event occurs before the CurrentCellChanged event. Any SelectionChanged event handler accessing the CurrentCell property at this time will get its previous value."I'll just cut and paste the code from the SelectionChanged event into the CurrentCellChanged event. But now I am getting NullReferenceExceptions. This problem also seems to stem from the fact that I am sorting the datagridview. If I disable the sort statement, the exceptions go away.
Why are these two events behaving so differently? Why does sorting cause the NullReferenceExceptions? How can I get this to work properly?Here is the pertinent code from the Load and CurrentCellChanged events.
Private Sub mainform_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.ChemicalsTableAdapter.Fill(Me.gsgDataSet.Chemicals)
dgv_chemicals.Sort(dgv_chemicals.Columns(0), System.ComponentModel.ListSortDirection.Ascending)
[code]....
At last I have found a simple way to run the "Wait for the progress bar." This is my code. But it does not really work. What's wrong?
[code]...
I need help with the ifstatement how to "pass" if the progressbar is 100% loaded.