Is there a way to use the DataTable.Compute Method with 2 or more filters, i have googled a bit and cant seem to come up with answer?
Current code
Dim Dt As Decimal = NumericUpDown1.Value
dtlist.Rows(i)("Value") = dtsold.Compute("Max(ClosePrice)", "Distance <=" & Dt & "")
[code].....
I have a windows applicatin built using vb.net 2005 - backend webservice that uses a sql db. I'm working on a form that contains a datagridview that I bound. My pic below to displays the outcome. I have a combination of dropdowns, textboxes, checkboxes, etc in the grid. I now need to add several filters and would like to know, what is the best approach:
1) adding the filters to the header row in the grid.
2) adding the filters outside of the grid as you can see i've started to do from looking at the pic?
I've been reading how it's possible to add them to the grid; but not sure if this is possible to do this when there are controls other than text boxes inside the grid.
I'm designing a form wherein a datagrid is being filtered from numerous controls.
The issue im having is each filter overrides the previous one. Just wondering the best way to approach this problem.
Heres a snippet of my
Private Sub MakeIDComboBox_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MakeIDComboBox.SelectedIndexChanged
Sheet1BindingSource.Filter = "Make like '" & MakeIDComboBox.SelectedItem & "'"
End Sub
[Code]......
I had this - in the CURRENTCHANGED event of my BINDING SOURCE.
Private Sub vendorBS_CurrentChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles vendorBS.CurrentChanged
If Me.CMCStarting Then Exit Sub
vendorBAL_C.vendorUpdate()
End Sub
This calls a sub in the class vendorBAL_C that does this
Private Sub SaveData()
_adapter.Update(_vendortable)
[code]....
The vendorUpdate sub calls two .Update's on my SQL Data Adapter.Only the first one is getting saved._vendortable gets saved - changes to _vendorcapabilitiestable does not.Those two DATATABLES are getting created by
_adapter.Fill(_vendorSet)
_vendortable = _vendorSet.Tables(0)
_vendorcapabilitiestable = _vendorSet.Tables(1)
To add just a tad complexity to all this I'm making changes to _vendorcapabilitiestable through a filtered binding source in the UI.
capabiltiesBS.DataSource = vendorBAL_C.capabilitiesTable
.
.
.
Private Sub CapabiltiesTreeView_AfterSelect(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles
[code]....
I tried calling .EndEdit's on my binding source - no change.Changes to the second table are not being saved.
How can i compute the total value of a row in datagridview in vb 2008[code]...
View 4 RepliesI am retrieving the Max Value of a column using the Table.Compute Method
Max Value
dtlist.Rows(i)("Value") = dtsold.Compute("Max(ClosePrice)", "Distance <= " & Dt & " And BuildingSize<= " & GLA & "")
I would like to also return another value of that same record
How do I identify the record that is the Max Value?
I have a datatable with 2 columns named TimeStamp and value. After I populate the table with rows, I am using the table's compute method to get the max value like this....
MyTable.Compute("MAX(value)", Nothing)
Is there is a way to get the row (or more specifically the TimeStamp value) where the max was found?
I have a dgv and in it the user can move around column's or resize columns or filter columns. Now there's an issue when the user try's to move the column's around because you have to click on the column and drag it over. But once you click on it, it sorts that column in ascending (or descending) order.
View 5 RepliesI have a DataGridView to display the content of my database. I Queried the required fields to a Dataset and Used this as DataSource for the Datagridview. Now i want to add dropdown filters to each column as we see in Excel Sheets. Is it possible and how.
Any how i require dropdown for the columns i also tried from below link to set the BindingSource.Filter = value but i did not find this property for Datagridview[URL]..
is there any possiblities like this select two conditions in one dataview like
Childds.Tables("ColumnList").DefaultView.RowFilter = customername='hello'
dv = Childds.Tables("ColumnList").DefaultView()
it has given correct answer but
Childds.Tables("ColumnList").DefaultView.RowFilter = customername='hello' or customername='hai'
dv = Childds.Tables("ColumnList").DefaultView()
In this case it takes only first one and ignore the second or condition
how to write the rowfilter to select when the customers are multiple
What is the difference, and why don't any of these methods work?
[code]...
I'm currently searching a database using filters. The user can use any or all of them, and to achieve this, I have the following
Private Sub GetData()
Dim QueryString As String = "SELECT * FROM Inventory WHERE"
Dim FiltersExist As Boolean = False
'Set Up Connection to Database
[Code] ....
I would like to create this using the query builder instead, but I don't know how to tell it to ignore a parameter if its value is null or an empty string. Another problem with the way I'm doing it now is that if the user has filtered the results, then adds a record, I cannot use the Update method of my TableAdapter, because the datasource of my DGV has changed. Even if I can't achieve what I want with the Query Builder.
I am attemting to read a .txt file database into an xml file and then read the xml file into a DataSet and then bind the dataset to bindingSources and then subsequently bind comboboxes and text boxes to the binding source. I am struggling with how to create bindingsources with different filters. I am not sure if I am even going about this the right way. Perhaps there is a better way. I already have the program working using traditional OLEDB and creating different datatables but I wanted to be able to add and edit my datafile so I decided to convert it to a xml file.
HTML
If Me.OpenFileDialog2.ShowDialog() = Windows.Forms.DialogResult.OK Then
With OpenFileDialog2
folderName = .FileName.Substring(0, .FileName.LastIndexOf(""))
'fill dataset with selected xml table
[Code] .....
I am trying to merge two filters but it aint happening:
ClientProfileBindingSource.Filter = "ClientType = '" & "Seeker" & "'" And "ClientType = '" & "Both" & "'"
error:
Quote:
Conversion from string "ClientType = 'Seeker'" to type 'Long' is not valid.
I have the code below and would like to sharpen the image in the increments of 10% starting at 0% to 100%. How do i apply separate filters so that when i move the track bar, i am able to see the effects take place step by step?
Private Sub TrackBar1_Scroll(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TrackBar1.Scroll
Dim sharpness As Single = CSng(TrackBar1.Value / 100) ' no change in brightness
[code].....
I am looking to find the best way to do the following: Filter data based on the drop down filters, as long as I am within the same product category (e.g. toys, puzzles, etc...), but in different web forms (product grid and product detail).So if I select toys under $25, I need the filter to the toys in a grid format, but if I click to view the detail I need the filter information so I can filter the related items display.Display certain filters depending on the product category.Right now I believe that if I build a user control and session variables that I should be able to accomplish this.
EDIT: Right now I am using the page_load event to update the data and would like to avoid AJAX for right now.
I have a notepad I am making. I need to resolve to more then 1 Save and Open Filter. I have the code:
Try
Dim dlg As SaveFileDialog = New SaveFileDialog
dlg.Title = "Save"
dlg.Filter = "Text Document (*.txt)|*.txt"
If dlg.ShowDialog = System.Windows.Forms.DialogResult.OK Then
RichTextBox1.SaveFile(dlg.FileName, RichTextBoxStreamType.RichText)
[Code] .....
I would like to sharpen an image using pure vb with no filters or unsharp method.Then use a track bar to slide through so that the image in the second picture box shows the effects of sharpening, up and down. I have the code below but it gives me errors:
Private Sub Sharpen()
Dim fpixel, secpixel As Color
Dim NewImg As Bitmap = New Bitmap(PicBefore.Image)
[code]....
I am writing an app that reads from the com port, filters the data, then writes to the text box, then immediately starts over. This all takes place in an endless " do while" loop within the "start" button code. I also have a end button too which closes the com port and ends the program. Some other buttons are present also to change the filter settings.Problem is when I click start, data is logged, but none of the other buttons work. Also some of the text boxes are "see through" and dont look like thy have updated with the rest of the form.
View 9 Repliesi would like to create a small tool that filters new and old facebook groups, i am almost finished, but one part isnt working the filtering here is the source code, grabbing groups works but checking if they are old or new doesn't, even though it should. There is one more feature not working where it filters the members size it is not grabbing the text it should (instead of grabbing the amount of members its just grabbing something from the beginning of the source code) [code]
View 1 RepliesI'm using VB.net 2005 to input data from a database application into Excel files.I un-protect the sheets, input data into specific cells using named ranges, then re-protect the sheets.
This has worked fine so far, up until I ran into a file that is protected with auto-filtering enabled. When I re-protect the sheets, I can't seem to protect it while allowing the use of autofilter dropdowns. The dropdown arrows for the autofilter are greyed out and disabled.
Using the following code to re-protect the sheets after inputting the data.
[Code]...
works fine. The sheet is protected and I can use the autofilter drop downs. But when I use that same code in my VB.net project, the drop downs are not enabled.
Scenario: FormA has a DataGridView with a DataTable as it's DataSource. The DefaultView of the DataTable is set to a particular filter, say "UnitFreight < 2.00". The user selects multiple rows then selects a context menu item to open up form2. Form2 does a bunch of stuff and in this example it will change the UnitFreight value in the selected rows on form1 to say 2.27. It also raises an event in form1 to adjust attribute cells such as UnitPrice.
The issue is that doing the above example puts the selected rows out of the range of the applied filter and I believe this is the issue because I end up getting a "Column named UnitPrice cannot be found" error. This is happening during the update of those attribute columns. I'm guessing the row has been filtered out so there's no column to be found. If I do the update without the filter applied it works fine. So my question is, what's the best approach to updating the data in this situation. I've started converting the updates to work against the DataTable directly instead of the DataGridView.
HI have a small problem that i cant figure out. i have a program that i want when a user select a date from a datetimepicker, it filters evrything from the datagridview that are for that date..Hare is the code i have
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim oledb As System.Data.OleDb.OleDbConnection
[code].....
The SaveFileDialog that opens up while clicking the export button of the CrystalReportViewer by default filters the predefined file types. Is it possible to custom define which files to be filtered?
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View 5 RepliesI have a Database named CarsType.accdb there are four fields in the data base Item_Name, Item_Num, Item_Qty, Item_Cost.
I am able to get the database to display my data in VisualBasic but I am not sure how to get the total cost to appear in my label (lblTotalCost). I prefer doing it in VB versus writing in my access program. All I am wanting to do it multiply item_qty * Item_Cost How would I go about doing that?[code]...
I have 3 column Qty,Price and Amount and i need to compute the amount per line using DataGridView, what are the possible events I may use?
View 1 RepliesI need to round the result from compute.8/19, how can i round this result to two decimal.Is there any symbol i can use for compute function to recognize the rounding format, because not must be two decimal,sometime may one or in integer?
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