ComboBox - Obtain Value From DataSet Based On Other Column Value
Jun 9, 2011
I have a combobox which is populated from a dataset (pulling values from the column Actuator_ID). When an item is selected from the combobox, I need to return another value from the dataset (column Gateway_Channel). In the 'selectedindexchanged' sub, I have the following line which should return the value from the second field (gateway_channel) but whatever item is selected in the combobox, only the value from the first row is returned.
errBox.AppendText((ds.Tables("Actuators").Rows("Actuator_ID" = ComboBox3.SelectedItem.substring(0, 2)).Item("Gateway_Channel")).ToString
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Apr 1, 2009
I would like to iterate through a dataset and obtain values of each column in a row
[Code]...
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Nov 15, 2010
I'm writing a help application for the Customer support team at my company to help agents ask better questions when customers report problems. In it, I've got a SQL database that contains all the products, topics, and questions. The layout is similar to the following:
Products Table:
Product_ID Product Name:
Topics Table:
Topic_ID Product_ID Topic
[code]....
I don't know if I'm making myself clear, but I basically need to do the equivalent to the following SQL statement: "SELECT PRODUCT_ID FROM Products WHERE PRODUCT_Name = LstProducts.SelectedValue"
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Jun 3, 2010
I am creating a program that will allow me to manage server EXE's for which I have the method to do so already completed. The problem comes when I want my front end to be able to use a database of different server configs stored in a dataset.
My Database has 4 columns (ServerID | ServerName | ServerPath | ServerMod)
I wish to be able to select the ServerName in a combo box (already done via Datasource/DataMember) and then load the ServerPATH and ServerMOD for that row into two variables.
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Aug 21, 2011
it's possibly to bind the values in a combobox to a column in a dataset? If so, how would I go about doing it? For example, If I have a column named 'Names' in a DataSet, each comboBox item would be a name from that column.(There will only me at maximum, 10 entries)
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Sep 30, 2011
I have a ComboBox with its datasource being a dataset from a SQL Server database.
The width of its columns are relative to the width of the name of the columns. I would like to increase that width in order to see the content properly and not cuted.[code]...
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Jul 31, 2009
I have 2 table in my dataset i want to add both table column names to the combobox.. how can I add the other table to the datacolumncollection?
'gets column names from typed datset and uses as combobox in datagridview
Dim columns As DataColumnCollection = DataSet1.Tables(1).Columns
Dim column As DataColumn
[code]....
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Apr 25, 2011
A ListView Column's with is set to -1 meaning its width is automatically set the width of the widest cell text in the column. I need the width automatcally set but I'd like to know the actual width of the column.
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Jan 27, 2010
I am using VB.NET together with ADO.NET to create a program. I have set my TableAdapters as needed and bound the correct tables-columns to my comboboxes.My problem though is this:My combobox2 item is bound to a datatable. The table adapter's Fill method (the select command basicaly) includes a public variable in the where clause to fetch the correct results. I ll put some code here to clarify it a bit more.Public Class Frm_inv
[Code]...
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Jun 17, 2011
I am new to vb.net and I am using visual studio 2010. I have two comboboxes on a form, each combobox is set to DropDownList so that a list of items can show in the combobox, but no text is allowed to be entered.
For combobox A, if user chooses item 1, the list of combobox B should be updated accordingly. I think this is quite common on a lot of applications. But I do not know to implement it. I even do not know the keyword to search for the relevant property or event handler.
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Oct 19, 2010
I think my question is discriptive, or as Microsoft in the Documentation for Data Grid the question is, How do I have a combo box column display a sub set of data based upon the value of a different combo box column?
[Code]...
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Mar 13, 2009
table named mytablei have columns like this
[Code]...
i would like is to include amount1 and amount 2 values into sum only if amount1paidstatus="yes" for amount1 and amount2paidstatus="yes" for amount2, something like for selected day and selected customer.query "should" look something like this:select amount1(if amount1paidstatus=1)+amount2(if amount2paidstatus="yes")from my tablewhere (day=1) and (customer=1)
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Jul 29, 2011
I have two ComboBoxes
<ComboBox Name="cmbMake" DisplayMemberPath="MakeName" SelectedValuePath="MakeID"/>
<ComboBox Name="cmbModel" DisplayMemberPath="ModelName"/>
I use LINQ-to-Entities to populate the cmbGroup ComboBox
Dim db as myDataEntity
cmbGroup.ItemsSource = db.Makes
How do I populate my second ComboBox (cmbModels) based on the selection of the first ComboBox (cmbMake) using XAML so that whatever I select in the first ComboBox automatically filters the ItemsSource in the second ComboBox?
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Dec 13, 2010
I have a data gridview on my windows form with 4 columns. Now I identify a column as followed:
Dim item1 as String = DataGridView1.Item(1, index).Value
So now I use a number ( In this case: 1 ) for the column index, but I want to make it a bit more readable so now I want to obtain the column index based on the datagridview column name.[code]...
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Dec 5, 2010
I would like to manually insert values in a combobox colum of a datagridview.I am using the DGV as an UNBOUND control.
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Jan 21, 2010
i make this code to achive what i need[code]but in datagridview what i make when i want to convert to use in dgv
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Feb 9, 2009
I've been able to add my own non-bound columns to a DATAGRIDVIEW - such as a check box column.But I'm not seeing how to take a bound column and make that column be a combobox. Doesn't appear to allow that.Do I have to hide the real column and add a "fake" front-end column that I make a combobox?
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Jan 25, 2011
I have an iSeries query in VB.NET/VS 2008 that I need to run with 2 separate values of a same parameter and present in a report for A/B comparison. In other words - I want to see a report where the result of a run with parameter = value1 is on the left, same query with parameter = value2 on the right.My initial idea was to use 2 tables on a report where each table would be based on result of each run from a DataSet (xsd), but I seem to be only able to specify the parameters on the ReportViewer level, which means I have 2 identical tables instead of A/B cases.
Obvious second way was to create 2 separate reports, each with its own parameter value and get them as subreports onto a main one. However, both subreports show up with "Error: Subreport cannot be shown". Is there a way to catch an error to see why?What is the best way (a.k.a. best practices, industry standard, whatever you want to call it) to create this kind of A/B report? I was well sure that there is a well-known method to make this work, but to my surprise I haven't found anything except multiple copies of MSDN articles.
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Feb 10, 2010
I'am trying to write a program for projects management.It is based on MS SQL Express Server 2008 database.I have 2 forms.In first form I have list of projects (using DataGridView and showing all projects).So if user click on Project name cell second form will open with Project details (using text boxes and labels to show one project).I try something like this:
Public strValue as String
Private Sub DataGridView1_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellClick
[code]....
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Jul 6, 2010
I am trying to create a spreadsheet based on a filtered Dataset. The problem is I cannot connect to XL. I get the following error:
Warning1Namespace or type specified in the Imports 'Microsoft.office.interop' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases.
From these lines of
Imports Microsoft.office.interop
Imports Excel = Microsoft.office.interop.excel
Another issue is I only have XL 2000, and I won't be able to get 2003 anytime soon. 2003 is what the target computer is using. I would like to develop the app with 2000 and make the appropriate changes to 2003 when I get upgraded. I couldn't get any information on the 2000 PIA here: [URL]. After reading this: [URL] it almost seems like I don't need the 2000 PIA. Many of the techniques described in this document involve the use of IAs for the Office applications.
For Office 97 and Office 2000, you can autogenerate these IAs using TlbImp. Office XP includes pregenerated (and optimized) IAs that you should use instead of autogenerating IAs. An IA distributed by the owner of the original COM server is called a primary interop assembly (PIA). You should always use the specific version of the IA that matches the version of Office you're targeting. I just want to develop the app. Then I can download the 2003 PIA, right? I would use this: [URL].
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Nov 7, 2011
I apologize if it is not. I am trying to write a script in Visual Studio 2008 (using a VB project) that will, upon the clicking of a button:
- A file object will be created.
-Said file object will read in a number of files from a specified file path.
-A dataset will be created and populated with fields from two columns within a database table; app_id and company_name.
-The script will read through the file names and fields recorded in the dataset, renaming the file to the app_id if the original file name contained the company_name.
The code I have so far to do this:
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
'Create the file object
Dim objFSO
The problem is that currently this code will only rename the file if the file name and company_name match exactly, ideally I'd need to include a clause to make it rename if the file name is "LIKE" or "contains" the company_name.
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Jun 3, 2011
am trying to calculate the values in rows in column 6 based on values of column 5. Bellow is the the code I am using I get a run time error about the string not formatted properly
[Code]...
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Nov 15, 2010
Q:how can i add columns dynamically to rdlc report from dataset in windows based.
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Dec 13, 2010
How do i populate my state combobox,such that when i select the appropriate country my combobox will automatically display the appropriate state?
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Aug 31, 2011
I have a combobox wich I want to populate based on the value of another combobox.[code
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Sep 20, 2011
I am wondering if it is possible to change the text of certain values in a combobox based on if a value is true in the sql datatable.what i have is a Roles Table with 3 columns RoleID, Role and Role not used.if Role Not used i want it to be displayed in bold.
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May 8, 2011
I have combobox, listbox and textbox. Combobox has datasource datamember values assigned i would like to select a customer from a combobox and save the datarow based on that selected value to an array it could be a list or whatever created in memory as variable and this will be my listview Datasource. I understand within that current row there is ID value which is interger.[code]...
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Mar 30, 2012
I want to limit the number of students (60) that will be enrolled in one section and prompt a message that it surpass the limit. I inserted it in my combobox1
Here's my code :
strsql = "select * from Schedulings where Sections = '" & ComboBox1.Text & "'"
Dim acscmd As New OleDb.OleDbCommand
acscmd.CommandText = strsql
acscmd.Connection = asconn
acsdr = acscmd.ExecuteReader()
It doesn't work. How should I do it?
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Jan 25, 2010
I am using a bound combobox control in a vb.net application. How do I set the combo box to an item if I know the value of the ValueMember, but I don't know the DisplayMember. I can use the FindExactString method if I know the DisplayMember, but not if I only know the ValueMember.In explanation, the value member is an employee Number, the display member is the Name. I get the employee number from a detail item in another table and now I want to set the combobox to display the Name that goes with that detail item.
Can someone post some vb code to show how to do this.
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Aug 15, 2010
How should i set the combobox selected index based on the "value". The following is the sample code. I am getting an error on the button click event.
[Code]...
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