tried in many ways and I know that very soon will succeed. at least I am very resourceful showing that ...... Please help me correct this code. because the DataGridView throws I query the data are in the range of dates
Option Explicit On
Option Strict On
Imports System.Data
Imports System.Data.SqlClient
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I populate a datagridview using a bindingsource and dataadapter. So I join 3 tables in the view to get the data i need.
so I have my view as a child table in my dataset. and a table called classes which is the parent table. So when I select a Class(class 1A for example), my datagridview displays the pupils in that class.
Now i need to add another relationship in the dataset. so when I select a day in a monthcalendar, I need to add 5 checkbox columns for each day to my datagridview. Should I add these 5 columns to my datatable? i'm not sure what the best way is.
Then for each day I tick I have to save to my pupil_job_day table. I will save the peoleid,their accountid and the date. please help me
I have a datagridview binded with a bindingsource with all the options of editing,saving,deleting enabled.But i am unable to understand the problem that is why the data from my datagridview is not getting saved.This is the code which I am using
Private Sub frmDvdMovieData_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'Library.category' table. You can move, or remove it, as needed.
Me.CategoryTableAdapter.Fill(Me.Library.category)
[code].....
If using a datagridview to update a database and the datagridview is bound to a bindingsource which has its datasource as the table to be updated: where dshould you place the tableadapter.update(mydatarow)
View 5 RepliesI am trying to display a football league table in datagridview. my code gets that data for each column from ms access and displays it in datagridview. I want to sort rows according to the value of the "pts" column.I've tried using using BindingSource.Sort = "pts" but this has had no effect.
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I have this class binded to a DataGridView with a BindingSource, what I'm trying to do is make the _SelectedMethod property a ComboBox in the GridView, and then make the items people are able to select from the ComboBox come from _Dictionary.here is my class which is binded to a DataGridView via a BindingSource.
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I have a datagridview1 and search textbox1 on my form On form load I need to fill datagridview1
* with absolute path+filename of certain filetypes like *.jpg,png,gif,bmp
* in a specific directory like Application.StartupPath & "Images"
When user types in search textbox1
* datagridview1 contents need to be continuously filtered to match searchstring
I have a BindingSource1 and a DataGridView1.
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How do I update a field in the underlying bindingsource for rows selected in a datagridview.
I can do it for single row in the bindingsource but not for several selected rows in the datagridview.
bindingsource.table.current is usually the current row in the datagridview
Brief : I have code which works if I don't dispose of the BindingSource after it has been assigned to DataGridView.DataSource but breaks if I do dispose it - why? Do I need to worry about disposing this?
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So, what is going on here? When I set DataGridView1.DataSource = Bds does it just do this as a reference? How does Bds get disposed once the procedure exits? Does garbage collection pick it up if I assign something else to DataGridView1.DataSource? Do I need to worry about this?
I'm having some issues and it's all explained in some simplified code I have a structure
Public Structure myStruct
Public Property name As String
Public Property span As Double
Public Property offs As Double
End Structure
Which is instantiated in a Singleton object as follow
Public myValues(10) As myStruct
Then on a form, I'm using the structure as the DataSource for a SourceBinder and the binder as DataSource for a DataGridView.On loading the form, I get all the values into the binder
For i As Integer = 0 To 9
binder.Add(singleton.getRef.myValues(i))
Next i
All the values are shown on the grid.User is supposed to be able to change the values, which should reflect on myValues but no matter, what code I put on CellValueChanged or CurrentChanged. I can't make it reflect the changes. Using breakbpoints on those events, I noticed that grid.row().cell().values and binder.current never changes.I tried also placing a button and directly changing myValues and reseting the binder binder.ResetBindings(False) and nothing happens.As far as I saw all ReadOnly properties are set to false.I've also tried setting VirtualMode to true on the grid and catching CellValuePushed and CellValueNeeded events but those are never called.
I have a DataGridView that is bound to a datatable. I also have a combo box with sorting items in it. When the user selects a new item in the combo box, the DataBindingSource.filter is changed accordingly.
For the cell and row validation on the DataGridView, I set the row error text accordingly as opposed to displaying a message box.
Occasionally, when switching between items in the combo box, the datagridview gets filled with a bunch of empty rows that all have error messages. It seems it is validating the rows that existed from the previously selected filter against the new filter.
See attached image. I hope I am making myself clear.
Basically I try to get a DataGridView and a BindingSource working inside a class. I define them by:
Dim TempDGV3 As DataGridView = New DataGridView
Dim TestBinding As BindingSource = New BindingSource
When I manually add columns to the DataGridView, it works perfectly, but when I set it's DataSource to a bindingsource from a base class, it doesn't load data and keeps throwing 'object does not exist' errors. The bindingsource mentioned here did, however, work on other DataGridViews that are defined in the base class (and implemented in the form to which the base class belongs)
Same for the BindingSource(not the above mentioned, but the one I try to create inside the class in the beginning of this post). I try to use it in the following way:
TestBinding.DataSource = TempDGV3
TestBinding.Filter = filterString()
SourceDataGridView.DataSource = TestBinding
But the BindingSource keeps returning 'Nothing' for it's datasource and basically doesn't work. However, the SourceDataGridView mentioned here gets filled with 63 columns with "AllowUserToAddRows" and other properties when the columns names are asked.
So my question is: how do I get the BindingSource and the DataGridView to work in this class? I'm getting the feeling I'm missing out on something very obviously here. If that's not the case, I can report back with more code?
I'm having problems with bindingsource. I have a proc used to update a datagridview from a bindingsource. When I run the debugger, the datatable appears to be populated rowcount is 2206 and 7 columns. When the bindingsource.datasource is set, everything looks good. The filter appears to be ok, however, when the datagridview is set to the bindingsource, it's not working. I have it in a try/catch block and an error isn't being raised. When I reference the columns to size them, an error is raised. Below is the snippet of
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I'm using the filter method of Binding source in VB.net to filter results in a DataGridView based on the text in a search box. However, the idea of this search, is that it shows a row if any of the cells contain the text. So my filter string ends up looking like this:
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I'm following advice to load data to a DataTable, binding to a BindingSource then a DataGridView. But some exzamples I've found use a DataAdapter, not a DataTable. [code]
View 3 RepliesIn the following sample, I create a collection of objects and bind them to a DataGridView. When the button is clicked, I .SuspendBinding, then remove all the records, then .ResumeBinding. The DataGridView1_SelectionChanged event is fired when I remove { m_dataSource.RemoveAt(pos) } the selected row of the Grid. Why is this? I would think that .SuspendBinding() would stop any events from firing through to the grid. If not, what is the point of .SuspendBinding()?
Imports System.ComponentModel
Public Class Form1
Private m_dataSource As New BindingList(Of BusinessObjects.Person)
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For a WinForms VB.Net application, I use the Bindingsource's filtering capacity to filter data, which is seen in a DataGridview. The BindingSource is from a DataSet, created using the Designer, and the data comes from a Access DB, using JetEngine and .Net 3.5. So basically:
Datagridview.Datasource = xxBindingSource
xxBindingsource.Filter = "[extended filter string with multiple columns]"
This filtering works fine, however, now I included some extra columns in the DataGridView, which I'd like to filter on, too. Of course, when I feed the manually added columns to the Filter of the BindingSource, this doesn't work out.I've done some research, and was not able to find any way to use the BindingSource's filtering syntax on the DataGridview. I'd like to use this syntax though, as I designed quite a nice UserControl and class around it, to provide smooth, fast and simple filtering capabilities.
Changing DataGridView BindingSource at Runtime Works but then Fails When Changed
View 1 RepliesAll fields from my class objects are added to the columns collection of DataGridViews, when the forms or custom controls that contain them are viewed within the VS 2005 designer. I haven't been able to figure out how to stop the designer from auto-adding all of the fields found within the bindingsource object.
View 6 RepliesI have a datagridview bounded to a bindingsource (that is, in turn, bounded to a dataset that is the data origin of the project) and a bindingnavigator to a Access table, all of this done with the visual designer of Visual Basic .net 2005. I want to print in a crystal report the rows shown in the datagridview after filtered using the .filter property of the datagridview. But, to achieve this, I need to get the filtered rows in a dataset, and I havenīt got this in any way. If I pass to the crystal report the main dataset origin of the project, it will print all the rows, not only the filtered rows. I would have figured out that there would be a .getfilteredrows or something like that in the bindingsource object, but there isnīt. I managed to get this manually, through a loop, but I canīt believe it is the solution experts use.
View 7 RepliesIs there any way to put a DateTimePicker control in the DataGridView? I checked all the possible properties but it give option of checkbox, combo box etc, but not the DateTimePicker.
View 1 RepliesI am trying to add a combobox into my datagrid which connect to access database by using the code below. The result I wish to get is the combobox is locate at my datagrid column that already exist, but what I get now is it will add a new column with combobox that I want to add. Can I just update the combobox into my existing column7 but not a new column?[code]...
View 1 RepliesUsing VB.Net I have the Datagridview control, In Datagridview one of the column I want to use Datetimepicker control Inside of the column.
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is there a way to filter my DataGridView?
i have a datagridview with a column name 'Date' and i want to filter it using a datetimepicker.
example: when the value of datetimepicker = "specific date" then the data that will show only in my datagrid is = "specific date".
Currently I'm loading my dgv with a dtp control using Microsofts example:at I would like the dtp column to do is when I click it once, show the entire calander, not just the current date.
View 2 Replieshow to sort my datagridview depending on the value of my datetimepicker. i have used the code below to view my access file into the datagrid
Private Sub showitems()
Dim dt As New DataTable
Dim ds As New DataSet
[Code]....
I am a new one to vb 2005. I dont know how to filter the datagridview with the 2 datetimepicker control one for start date and another one for end date. I want to search the dates based on the datevalue of the data in one coloumn.
View 8 RepliesI'm hosting a DateTimePicker in a DataGridView using the Example code from this page [URL]..I'm looking to set the MinDate of the DateTimePicker from within Form1 when I declare the CalendarColumn as I want to limit how far back the user is able to selet a date. Since this MinDate will change as time marches on I need to be able to set it from within Form1.
View 1 Repliessource code visualbasic2008 "9" and can filter through DataGridView fields in a table, using two date ranges
View 3 Replies