.net - Databound DataGridView Not Sorting Date Correctly?
Nov 19, 2010
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)
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Mar 7, 2012
I have a number of records being displayed in a data grid view, but I want to be able to sort these records via the date. Clicking at the top of the column just sorts them in relation to the first number of the date.
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May 30, 2012
The Combo-box only has three items (Top View, From South looking North, From West looking East). Bound data from an Access Query called qryViewsFilteredByJob. I'm using it to pass a parameter to the filter for a binding source on a second query called qryAllSections2 (I don't think that's important though.)
When the form loads up it displays correctly stating on 'Top View', and I can click another other item just fine. When I pick another item, however, the first item, 'Top View', disappears and it replaced by whatever item I just clicked. So if I clicked 'From South looking North', the three item choices are now 'From South looking North', 'From West looking East', and 'From South looking North' again...
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Mar 7, 2012
I 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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Dec 22, 2011
I have a simple (ASP.NET) web page that lists files of a particular type in a folder and renders them in a ListView.
I've tried to sort them by descending LastWriteTime, that is, in reverse date order. However, although the sort process does change the order of the array, it doesn't sort it correctly. For example, one item with a LastWriteTime of #6/3/2011 12:00:00 is top of the list, but another item with a LastWriteTime of #12/16/2011 12:00:00 is halfway down the list after sorting.
Code:
Dim dirInfo As New DirectoryInfo(Server.MapPath(AppSettings.Item("ContentDir")))
Dim FileArrayList As New ArrayList(dirInfo.GetFiles("*.msg", SearchOption.TopDirectoryOnly))
[Code]....
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May 4, 2009
How can I get this to happen? I googled around and it seems setting the CUSTOM FORMAT to " " when the field is null will work but not for a BOUND datetimepicker.
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Jun 10, 2012
It seems like I keep having problems with dates. I am using the following code:
Dim LocalDateCultureProvider As New CultureInfo(CultureInfo.CurrentCulture.ToString)
Dim CurrentDate As DateTime = Convert.ToDateTime(System.DateTime.Now.ToString("dd/MM/yyyy"), System.Globalization.CultureInfo.InvariantCulture)
ExpiryDate = DateTime.ParseExact(strDate, "dd/MM/yyyy", LocalDateCultureProvider)
If DateTime.Compare(ExpiryDate, CurrentDate) < 0 Then
MsgBox("This file has expired.")
[Code]...
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Dec 14, 2011
I have been unable to correctly convert a string to date. The string is read from a text file and placed into a string, below is a snippet of how the text file is read until the date is field is read:
Dim varOrderNo As String
Dim varDate As String
Static Dim currentrow(20) As String
[Code] .....
I have then tried loads of different ways to convert it to a Date so when I then write it to a SQL Database it enters as a date. The string read from the text file is in the format of 13122011. If I don't try to change it to a Date before writing to SQL it doesn't recognise it as a date and sets the field to 01/01/1900. I have tried and searched loads online and everything i try should work but doesn't.
Dim varDateConvert As Date
varDateConvert = CDate(varDate)
varDateConvert = Convert.ToDateTime(varDate)
varDateConvert = DateTime.Parse(varDate)
All of the above cause my program to drop out / crash at the point of the converting.
I have also tried to format the string to insert the '/' before converting:
txtDate.Text = varDate.Substring(0, 2) & "/" & varDate.Substring(2, 2) & "/" & varDate.Substring(4, 4)
varDateConvert = DateTime.Parse(txtDate.Text, Globalization.CultureInfo.CreateSpecificCulture("en-GB"))
The result for the above is:
From File: 13122011
Substring: 13/12/2011
Convert: 12/13/2011 - Crashes here
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Dec 6, 2010
I have a datagridview which is bound to a table in a database. In said table, I have a field called Date and a field called Time, among other various fields. By default, I see that VB.NET attempts to help me by formatting the Date and Time columns for me, however I would like to do it my own way. I checked the columns' DefaultCellStyle fields and found them blank. Apparently, its current behavior is defined elsewhere. How would I go about removing the default formatting that VB.NET put in place to make room for my own?
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Sep 13, 2010
I have a table 'WeekPayment' bound to a DGV having following fields:
EmpID
EmpName
Wages
[code]....
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Jun 23, 2010
I'm having some problems with a data bound datagridview.My current scenario is the following..The itemSetup has tree properties {ItemNo, CompNo, LocNo}(compno locno are not required)I have a datagridview with a datasource list of itemSetup And this has two comboxes cboCompany that is bound to a list of company the selected value is bound to compno. cboLocation that is bound to a list of locations the selected value is bound to locno the location class requires the compno to create the list of location the problem I run in o is that the when the compno is Nothing the cboCompany throw a datagridview_ dataerror when the form is loaded en when a item is added it looks like the binding of the combox runs later then the value is set.
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Nov 13, 2010
I have a DataGridView bound to an Access Database. I have also added a button to allow adding a new column. However, when i save the databound datagridview, the new column doesn't save. How can I fix this?
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Dec 19, 2011
I'm working on pasting into a datagridview. I know you can't paste right into the datagridview, but that you have to paste the clipboard into the dataset. I'm having no problem with all of that. My problem happens with the arrays. Just so you can see what is going on, I'm going to post my code now.
Private Sub PasteToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PasteToolStripMenuItem.Click
If String.IsNullOrEmpty(Clipboard.GetText.ToString) Then
[Code]....
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Feb 11, 2012
I'm trying to get an If statement to check is the date picked from a datetimepicker is at least 3 days prior to the current date, I can get it to calculate the difference however if I chose a date that 4 days prior to the current date (i.e the result being -4), the else statement doesnt fire.is this something to do with the result being a negative value? I did try to assign the DateDiff result to a variable defined as a short and then used this variable in the If statement, but still get the same issue. Option Strict isn't showing any issues.
[Code]...
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Jul 22, 2009
I found very wiered behaviour for DateDiff. or any other kind to date difference methods avalibale when Date has AM/PM specified in it.
Cl.LunchStartTime =
"2009/7/13 12:10:00 AM"
Cl.LunchEndTime =
[code].....
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Feb 19, 2012
I am reading a CSV file using OLEDB command in VB.Net
Everything is working fine. the only problem is that one of my columns has time value in a format "07:53.8"
When i read this value using dr.item(1), it reads the string into a date "01/25/2012".It gives me the same value in dr.item(0)
I am not able to read the correct value as shown in the CSV file.
following is the code
For I As Integer = 0 To 2
dr = dt.Rows(I)
MsgBox(dr.item(0))
[Code]....
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Jan 28, 2009
I have a DataGridView on a form in VB 2005 Express, of the 10 columns i need on this DGV 6 of them will be pulled from an MSSQL DB and 4 of them i need to manually enter. One thing i have going for me (i think) is that the 4 manual columns have the same data in each row.I have been filling this DGV using a datatable, but i am not figuring out how to add manual columns and databound ones in the same DGV. My column layout would look like this:[code]some one please explain to me how i would do something like this. if you can include the datatable definitions also it would be a big help, in order for me to verify that i am at least doing that the right way.
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Nov 23, 2010
I have an editable datagridview that's been databound with dataadapter and datatable, and a normal button on a form. When i edit the dgv's cells and click the save button it fires the datagridview_cellvalidating event and if the cell validation is correct it updates and saves the current record to the datasource. Also, before save it commits change in any cell under editing.But when I use a toolstripbutton to do the same work, though it saves the dgv records but doesn't update the current change i.e. it saves the old records that are being fetched when the dgv was populated first during form load. Also, clicking the toolstripbutton doesn't fire datagridview_cellvalidating, datagridview_rowvalidating etc events.
What it seems to be is it's not commiting the change in any cell under
[Code]...
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Apr 27, 2010
I've inherited a form that has a DataGridView that is bound to a dataadapter and it is connected to a binding source. Within the DataGridView is a combo box that is bound to its own bindingsource which basically just calls a stored proc to bring back the possible values for the dropdown combo control
With a blank new row and sometimes even with an existing row, this value for the combo box can be NULL which is a legitimate value for it if no value selected. Problem is everything is so tightly bound if the user mistakinly clicks the dropdown then a value is populated and there's no way to get back to NULL
I've tried to catch the mousecelldown event and others to try to catch this before a value is selected but the Cancel=True doesn't work - I can catch the event but don't know how to return the cell to unclicked or reset it to NULL or pre selected value if NULL I know how to at a new row with the datatable and then set the combo datasource to it and I have my null blank value but with a tightly bound control how do I add this row?
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Jul 21, 2010
I have a DataGridView control that is bound to a dataset that I set up in design mode. This grid will contain addresses for a client. The relationship is 1 client to many addresses. So, when the user selects a client, I wish for this grid to populate with only the address records for that client. How do I set up in code a way for the grid to recognize this?
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Feb 8, 2010
i use data grid view in couple of my forms, i want to sirt there by date, but the datagridview of these forms take in two dates as well, a from date and a to date., and both are displayed side by side. eg feb 01 2010 - feb09 2010 and therea are more like this. the grid takes in couple of values like this
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May 31, 2012
I'm trying to pull a table from an SQL database and sort it on the "Date From" (DtFr) column, which represents the start of a lease. I thought it would be as easy as this:[code]......You were right about the string value. I added a data column called sortDtFr to the datatable and gave it System.DateTime as a datatype and iterated through the rows setting the new column's value equal to the old one casted as a Date. Here's the code for those interested:listing all drives with GetLogicalDrives()..I am getting ( A:. C:, K: )
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Dec 1, 2011
First off a great piece of code [URL] you saved me soooo much time. I am a somewhat newbee to VB2010 and was wondering how would i go about setting lets say setting column(4) to a date format so that i can get it to sort in the correct order.
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Jun 8, 2011
Using the System.Windows.Forms.DataVisualization.Charting objects/namespace, am having problems getting by chart to sort axis of dates properly.My data looks like this (dates in US format):
Product Quantity SaleDate
A -- 2 -- 5/1/2011
B -- 1 -- 5/1/2011
C -- 1 -- 1/1/2011
B -- 2 -- 2/1/2011
I'm creating a stacked column graph like this, where dv is a dataview of the datatable:
vb.net
chSales.DataBindCrossTable(dv, "Product", "SaleDate", "Quantity", "") chSales.AlignDataPointsByAxisLabel() For Each cs As Series In chSales.Series cs.ChartType = SeriesChartType.StackedColumn cs.YValueType = ChartValueType.Int32 cs.XValueType = ChartValueType.DateNext
So this produces a stacked column graph with 2 A's, 1 B in May 11, etc But the date order is Feb, Jan, May, regardless of how I sort the datatable provided to the chart.
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Oct 12, 2011
how can I sort (not filter) directoryinfo files by date (oldest to recent) ? I am using asp.net and visual studio 2008
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Feb 7, 2010
I am having trouble adding a row to a databound datagridview on a parent form from a child form. I have two forms, one contains a datagridview that is bound to a table using 'datagridviewbindingsource' and contains an 'add' button. The second contains a checked listbox that is populated correctly and has a "Cancel" and an 'OK' button - when i check several items in the child form, i would like to hit okay and update the bindingsource of the datagridview on the first form with the checked items.
Code:
in form1 when btnAdd is clicked
dim f2 as new form2
'call it as a dialog to check for the cancel button
f2.ShowDialog()
[Code] .....
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May 21, 2010
i need to sort out rows having todays date in the datagridview in vb.net 2008
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Jan 20, 2011
At 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].....
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Mar 11, 2011
I have a Datetimepicker, when i select a date it brings up in a listbox all the files created on that day but in no particular order. So i wanted it sorted by when they were created (not to fussed either ascending or descending). i tried using the code below with no luck, This adds multiple of blocks of the same files on the selected date
[Code].....
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Apr 23, 2010
i'm using vb 2005.I have a datagridview binding to a datatable, and user can add new rows to it. i want to enable copy and paste, so i broke the clipboard content into string array, and tried to fill the values in the datagridview.
I had problems when i had to add new row to the datagridview. because if the user clicks the last row (*) to paste the content, i need to add new row to the datatable, however, the current row is also a new datagridview row. If i just use the following code
'dgv is the datagridview
'dt is the binding table
dt=dgv.datasource
iRow = dgv.CurrentCell.RowIndex
[Code]...
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