VS 2010 - BindingSource And Dataset - Show Attributes In Textboxes Inside A Form
May 16, 2011
[Code] Somewhere my system haves a function that returns a DataSet with the books of a certain subject and all the Authors that wrote such books. I need to show the book's attributes in some textboxes inside a Form. I use a BindingSource to display the ISBN, Name and Subject of the books in a textbox, yet I don't know how to display the author name of the book I am currently viewing in a TextBox, taking into account I already fetched the Author into the DataSet.
Its pretty much the Child/Parent display problem somewhere discussed in the codebank, but kinda backwards, the thing is that I;m navigating through the CHILD records here, not the parent, yet i have all the data needed in my Dataset.
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Dec 21, 2011
i have a strongly typed DataSet that haves these two tables:
AUTHORS
ID
Name
and
[code]....
Somewhere my system haves a function that returns a DataSet with the books of a certain subject and all the Authors that wrote such books.I need to show the book's attributes in some textboxes inside a Form. I use a BindingSource to display the ISBN, Name and Subject of the books in a textbox, yet I don't know how to display the author name of the book I am currently viewing in a TextBox, taking into account I already fetched the Author into the DataSet.
Its pretty much the Child/Parent display problem somewhere discussed in the codebank, but kinda backwards, the thing is that I;m navigating through the CHILD records here, not the parent, yet i have all the data needed in my Dataset.
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Dec 9, 2009
Am new to VB, can anyone tell me very simple how to share the MAIN Bindingsource with an detail form where i want to edit 1 record from the main datasource?
andreg
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Jan 12, 2011
I have several textboxes in a winform, some of them are inside a groupbox. I tried to loop over all textboxes in my form:
For Each c As Control In Me.Controls
If c.GetType Is GetType(TextBox) Then
' Do something
[code].....
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Jan 16, 2004
I think I fried my brain. Something so easy and I can't figure it out. I have a windows form with a datagrid and a dataset and some textboxes.I have a button that populates the textboxes with the selected row from the datadrid. That works.The user then makes changes to those text boxes.Now I would like to update the dataset with those new values and can not figure it out.If you could please give me some sample code,
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Jan 23, 2011
I have created my own object, wich contains a SerialPort. I have a sub in my object wich handles the .DataRecieved-event. I'm trying to access my DataSet from that sub, but for some reason I'm unable to do that. It keeps telling me that my tables contains 0 rows, but I'm 100% sure that they contains several rows.
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Jan 15, 2012
How I can change Autocad information inside block Attributes(I think on width, rotate, text style, layer, height..etc ) in visual basic? For example, We have some block with 2 attributes and I want replace width factor.
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Jul 12, 2010
I have a form with multiple DataSets (filled by multiple Stored Procedures) and corresponding DataAdapters. Associated with the DataApters are commands for UPDATE, INSERT......... Before using the DA Update I am using 'If DSxyz.HasChanges(). It seems that when I make a change anywhere on the form affecting 1 dataset, all of the datasets show this to be true. Why should changing one dataset on a form cause all of the datasets to show changes?
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Aug 20, 2009
I have a dataset which I am populating via an Oracle SQL query:
SELECT col_id, col_desc
FROM table_data;
Then I generate the dataset, via the function
Dim ds as New DataSet
OracleDataAdapter.Fill(ds)
Now, when I get the XML of the generated dataset via:
Dim strXML as String
strXML = ds.GetXML()
When I read/display the string, it is showing as follows:
<NewDataSet>
<Table>
<COL_ID>ABC001</COL_ID>[code]....
How would I be able to accomplish this? I would read the rows from the table in the dataset and construct the string?
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May 20, 2011
I have written my and in a test class for vb.net and it works as follows:
A stored procedure is executed and the result is saved in an xml file with the help of a dataset. What I need to do now is , Information of this dataset should also be redirected to a textbox in a form so that I can copy this information in clipboard and create dynamic assert statements for instance I want
datatable.rows.count,
datatable.columns.count,
datatable.columns(i).ColumnName,
and same to get columnType. All of this info would be shown in the form but I am unable to open a form in NUnit test class.
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Nov 20, 2010
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] .....
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Oct 22, 2009
I am creating an application using an Access database and the DataSet, BindingSource and TableAdapter to connect to my database, but I need to able to switch between different databases with the same tables, but new name and path. So I will need to set a new
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Jun 5, 2011
use dataset , bindingsource and table adabter to filter or serch on database and update the datagridview
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'Database3DataSet1.Table3' table. You can
[code].....
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Sep 27, 2010
Inside a form, I would like to display a pdf file which is already available in my resources (template file "untitled"). In this pdf file, I have some fields which get their values from some texboxes in another form. My aim is, when the user triggers the button to call this form, it should insert the values inside the pdf file and display the output pdf inside the form.I have written the code to an extend but could not finish it myself after my many trials... Now here are the two things I cannot manage:I can use a directory to read the template pdf "untitled1.pdf". But my aim is to use the file inside my resources. can save the output file in a directory but this is not I want to do. I want to display the output pdf.
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Apr 25, 2012
I've got a databound query in my application which is querying the "Customers" table in our database.I've created this directly from the ComboBox's datasource creator in the Design view.Various bits of code created in the designer include:
Me.CustomerBindingSource.DataSource = Me.CustomerDataSet
Me.ComboBox_Customers.DataSource = Me.CustomerBindingSource
What I've done in the first stage of developing this feature is to show my users a ComboBox showing a specific subset of the customer list by applying a filter to the BindingSource.
Me.CustomerBindingSource.Filter = "someColumn = 3"
What I want to do on a second pass is to allow the users to type a specific bit of information into a textbox and check whether it appears in Me.CustomerDataSet like so:
Dim x As IEnumerable(Of CustomerDataSet.customerRow) = From cust In Me.CustomerDataSet.customer Where cust.custno.Trim = "test"
If x.Count <> 0 Then
At this point, I have a customerRow object. I want to check whether this customerRow object appears in the list presented to users in Me.ComboBox_Customers via the filtered Me.CustomerBindingSource. Me.CustomerBindingSource does not (directly) contain customerRow objects, it contains Object objects.How do I find out whether Me.CustomerBindingSource contains the customerRow object at whatever lower level?Also Once I've determined that Me.CustomerBindingSource contains the item, how do I select that entry in the ComboBox?
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Apr 29, 2011
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.
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Nov 22, 2009
I 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.
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Mar 7, 2011
I've got a BindingSource for a DataSet. I'm fairly new to this whole binding business and databases, and it took me hours to figure out how to use BindingSource to get to an item, because the Row method was not included in the autocomplete. Not to confuse anyone, here's some sample code:[code]The code runs perfectly and does exactly what I want. My problem is the following: When I've typed in source.Item(0)., autocomplete does not display Row in the list. Is this perhaps not the best way to do what I'm doing? Is there a reason it's hidden? Is this a good coding practice to do so? The fact that is wasn't there took me lots of time Googling, so I'm trying to figure out whether it's a Visual Studio glitch or my own.
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Nov 7, 2009
I'm trying to filter all the records in my datatable that have a NULL value for one the fields in the table, I'd like the bindingsource to show only those records that have null values.
[Code]...
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Oct 12, 2011
I have a form that has 1 listbox and multiple textboxes. I need to write an array code to beable to select on an item in the listbox and then display different data into the multiple textboxes due to what is specifically chosen in the listbox. Im having a lot of trouble figuring this out.
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Jan 13, 2011
I would like a method that opens a form which has a textbox. The user then types into the text ox and click the button "OK". The method then performs an action on the userinput before returning the manipulated value to the program.
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Dec 1, 2010
So I have my main form (Form1) and I have a module called globalMod. On start up, Form1 loads, and globalMod contains functions and global variables (using Friend). I need to be able to have a function inside of globalMod edit a label/text box/etc in Form1. I tired Form1.object.Text = "content" and it doesn't do anything, even if I update / refresh the form.
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Oct 11, 2011
I have a listview with a collection that is filled from an array with data from a database.
HTML
Public Sub AddHandoverItems()
'Create item to hold contents of handover array
Dim itm As ListViewItem
[code]....
highlight/select an column and each column in the entire row, doubleclick the row, and populated a form with the .selecteditems(0) and subitems(0) to the text controls on the called form?
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Dec 29, 2008
[URL] I'm trying to do an exercise on that website but it doesn't show the answers to the exercises..
I've gotten everything to work except one thing. I can't get the right numbers inside the textboxes! I've been sitting here for like an hour trying to use a case statement.. it didn't work for me so I tried to use if then statements and I still couldn't get it to work!
Here's my code for that part:
Ignore the second if I was desperate xD
Private Sub btnSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
[Code].....
And for the Case statements, if I wanted to use it for a range of numbers, do I write "Case 1 To 10" and that's numbers between 1 and 10? Is that right?
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Mar 4, 2012
I have a project with 2 Forms. Form1 with 2 SplitContainers and the code below to show the Form2 inside SplitContainer2.Panel2. Form2 with no borders and orange color.
Public Class Form1
Declare Auto Function SetParent Lib "user32" (ByVal hWndChild As IntPtr, ByVal nWndPArent As IntPtr) As Integer
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[code]....
I want to resize Form2 when change Form1 size by mouse.I use frm.Size = SplitContainer2.Panel2.Size but look in pictures what happen:This is Form1 without Form2 inside Panel2 This is the application in first run. Form2 showed in Panel2 with orange color.The size is OK (frm.Size = SplitContainer2.Panel2.Size)Now i have change the size of Form1 with mouse click (or move form corner).Look the Form2 in Panel2. Didn't change size. Stay in first run size.How to change the size of Form2 when i change the size of Form1?
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May 27, 2009
I've got the following issue: I want to make my program change the Backcolor property of all textboxes inside a TabControl. The problem is that one of the Tabs has got another TabControl in it, and I need to change those too.I'd like to to it all at once, but I'm getting an error using this code.
vb.net
For Each SpeechTextBox As TextBox In TabControl.Controls
SpeechTextBox.BackColor = ColorFondoTablasUSE[code].....
The error I get says this:
System.InvalidCastException was unhandled
Message="Unable to cast object of type 'System.Windows.Forms.TabPage' to type 'System.Windows.Forms.TextBox'."
I read somewhere in the forum how to make this work, but I can't find it.
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Jul 22, 2009
I am using a gridview in my form.aspx page. The textboxes in each row of the gridview are to be populated from a datagrid upon clicking a particular field of the datagrid
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May 30, 2012
This is my first time using WPF. It has been a bit of a nightmare, but I've done enough of the project that I now don't want to start all over again with a forms application.
My problem is this: I have 50 textboxes inside an expander, which in turn is inside a stackpanel. I need to store the value of each textbox in an array. In forms I would probably do it something like this (I am using vb.net by the way):
Dim i As Integer
Dim values() as string
For i = 0 To 49
values(i) = form1.Controls("TextBox" & i).text
Next i
(Assuming my textboxes were named Textbox1, Textbox2, Textbox3 etc.)
How can I do this in WPF? I've tried using Trees (I think they're called?) but have failed every time and now given up.
Oh, I also forgot to mention that there are also other controls in the expander (labels that are paired with the textboxes).
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Nov 11, 2009
Can you add values inside textboxes that are located in tables in Visual Basic 2008?
I put a TableLayoutPanel on a form and inside the Table I put textboxes. Outside the table there is a button. The whole point of the program is so that the user inputs numerical values inside the textboxes and then hits the button and the answer comes out in another textbox. But its not working. It worked when I didn't put my textboxes inside the TableLayoutPanel.[code]...
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Aug 7, 2010
My two forms are: form 1: 2 picture boxes (#2 is hidden) form2: 1 button
My code for this button is:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Form1.PictureBox2.Visible = True
End Sub
In my program I want to do the same thing, but I'm using MDI forms - for some reason it doesn't work like above. I tried the same as above as appropriate for the new project but it doesn't show the 2nd picture box.
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