I am having trouble filling my datagridview from a separate combobox selection.On my form, I have a datagridview that displays all the contents from my tab delimited text file (customers.txt). Also, on the same form I have a combo box that displays all the customers names.
Once a user selects a name, the datagridview should populate details about the selected customer. I figured out how to fill a multiline textbox; however,I want to fill a datagridview instead but am unsure how to go about doing so.Code for filling mutiline textbox with customers details
Private Sub ComboBox1_SelectedIndexChanged(sender As System.Object, e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
Dim dr As DataRow = table.Rows(combobox1.SelectedIndex)[code]......
I am pretty new on programing and for the past 2 days I“ve been trying to paint a table grid based on the selection made on 5 combo boxes. My problem is that I am trying to fill the combos based on the selections made on the other combos and really I am going insane. I have found a couple of examples that show how to do this using JavaScript but I don“t think this is the best solution. i would like to do this using a stored procedure which I think is more efficient. My db is on SQL 2000 and I am using asp for server script.At the moment all i have is this, which really doesn't do very much, all it does is composing the where clause so that whe i call the stored procedure if filters the results based on the combos, but ofcourse the combos are at the moment static: [code]
I need some advice I have a bound datagrid and a bound combobox lookup on a form. What i want to do is filter the combo box so it only shows the items left that are not in the datagrid already.
I have managed to achieve this already.But when the program runs, and there are items displayed in the data grid the combo box items are now filtered.The program crashes as it can't display the combobox item as i have filtered them out. The program runs fine if the datagrid is empty (IE combobox items not filtered). But as soon as there is a record in the datagrid when i save the database and refresh the combo box the program falls over is the items it is looking for is not in the combo box items list.
What would a work around be. I have thought of a separate combo box that is hidden and use the datagrid combobox events to show it in the correct position.Just to be tedious the displayed item is not the stored item value
I am building a simple GUI to view data within a database. I am getting stuck when it comes to filtering data. I have followed Beth Massi's video entitled How Do I: Filter data on the client?
However my datagridview will not filter, it simply moves the highlighted cell down to the location of the item selected in the combo box. The items in the combo box are also repeated as opposed to grouped by what they they are called, for instance I have a column called region and every cell contains the text "West" and the combo box just shows a list of all the cells as opposed to just one.I followed the video several times and every time this happens. Even with a new project. Could it be because my data isnt a table but a query of several tables? I can filter on this data in excel and access easily.
I am a new one to vb 2005 and I have no idea to get the datagrid filter view option.I developed a new program which have an datagrid view.I want to filter the data based on the 3 thingsthe first one is the "dates between start and end with 2 datetimepicker controlhe Second one is 2 of the filter combo boxes.For ex: it should filter the data between the two datetimepicker
i wanted to link options selected from Comb box A (general) to specific options in combo box B (specific). I want to pick a word in Combo box A that has specific words/phrases in Combo Box B show. But not all the words to show in the combo box B if they aren't associated with the Word picked in Combo Box A. Ex.When "Soda" is picked in A, only "Coke, Sprite, Fanta" should be visible in combo box b, not everything else.This is the code i used to make the boxes, but i don't know how to link them.
Private Sub MainForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load ' fills the combo boxes with values Me.xGeneralComboBox.Items.Add("Soda") Me.xGeneralComboBox.Items.Add("Juice")
How to use a databound combo box to display one field in the drop down, and another as the combo box text on roll up? Using VS 2005... For example, I have a datatable that has 2 fields. One called "ShortDesc" and one called "LongDesc". I want to be able to see the "LongDesc" column values in the drop down on the combo box. When I make a selection, I want the text in the combo box to read the corresponding "ShortDesc" value.
I am getting an error when i try to populate some combo boxes with a value, the combo box has values in and the right amount the code is getting the right number.
the error msg is "Object reference not set to an instance of an object."
Combo box 2 is filled based on a selection made in combo box 1 and a listview is populated based on the selection made in combo box 2.When the LostFocus event completes in combo box 1, it hits the LostFocus event in Combo Box 2 but it shouldn't. How do I prevent this from happening or if I can't prevent it, how do I work around it? The following is the code used.
Private Sub cboCategory_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles cboCategory.LostFocus
I've got some code like the following. I want it so that when I chose an item in 'select 1' it changes the in the second combo box but I'm not sure of the best way to go about it. Does it have to be AJax or can it be done with just Javascript?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head>
how do i program by saying if a certain item is selected in a combo box then that item will not appear in a second combo box. i have this code for now but it does not work
I know how to add the items during design time but how do you add the items through code. I want to fill the combo box in the datagrid with the results of an SQL query?
I have a form with 8 combo boxes and would like to disble certain combo boxes, depending on what was selected in another combo box. The reason is so the user will not have a blank return on a query. The first form I created like this worked great, no issues. This form only allows one combo box (Number_of_Lightheads) to disable any others. Below is the code I have for this Form. why the other combo boxes will not disable the ones that are called out in the code?
Option Compare Database Private Sub High_Def_AfterUpdate() If Me.High_Def = Yes Then
how do i program by saying if a certain item is selected in a combo box then that item will not appear in a second combo box i have this code for now but it does not work
j = 0 Do While j < cmbSession.Items.Count If (j <> lesson) Then
I created a query on a Access database, which I would like to show with the datagridview. So, I created a new table adapter with my query, which creates as well the datatable tbl1. Then, the wizard created the datagridview for me, showing the correct data. Now, I would like to filter these rows: I already read it is possible to do it by simply clicking "Add query...", but I would like to do it in a different way. I have some comboboxes, and I would like to use the strings inside them to filter my table tbl1. Is it possible to apply those queries one after the other on my datatable tbl1? I am able to filter only once with:
I have a structure representing a log, containing fields such as Order Number, Line Number, etc. Each time a test is done, this log structure is serialized and appended to an Xml file created on the day which the test was done. At present, i have 20 or so Xml files containing varying number of log structures which i would like to be able to filter through in a single search. My target at present is to be able to load all data against a specific order number, and also to perform a search and return distinct records, as there could be multiple Order Numbers in one or many files.So far, i've attempted to load all the data from all files into a large generic List(Of Log) and use LINQ to filter out the results. I've also tried loading all the data into a DataTable and filtering using the Select method. The last method i used was using the SelectNodes method from the XmlDocument class. All of these methods seemed to work but i was becoming stuck when filtering distinct records?
working on a little app which requires the user to select items from a listbox bound to a dataview, then adding selected items to a new table. In the new table calculations are done, and so far its all working pretty good. The problems comes in is that there are many values and types to filter and I am having some trouble with the search aspects. So far in my code I am going about the problem using the datatables in this manner:
to sum it up:
form loads initial data to table displays it in a dataview bound to a listbox dataview is filtered using rowfilter queries, controlled in various manner dataview is converted to table, then selected row is imported to final table Calculations done on final table values
So far its pretty damn fast and works well, however the searching needs refinement. To give you an idea here is *some* of the search criteria in one of my rowfilter calls.
color: red black
[code]....
Form is requested to be as so:
6 checkboxes, and 12 numericupdowns (spin) buttons I have a seperate method to enable/disable them dynamically.
Have a look at the select row query: its getting messy already.Although I am specifying max and min values it seems to only filter by the max value and color, so something is wrong here...but i think it is just syntax... but already its getting a little long, just wait until i add the types as well..
Public Sub mainFilter() ' variables to enable filtering by color Dim red = "" Dim black = ""
[code]....
So basically is there a better way for me to go about filtering these table values? I notice in visual studio I can add queries to the dataset in there and they work quite well directly on the source table, without using a dataview and temptable, but when I open the query builder I can't add variables to the queries, which would force me to make queries for every foreseable scenario, and add buttons or menus to activate them all....not good.is there a way to hand code these queries with variables?
alternatively I thought about making a little rowfilter query builder, that substitutes variables for the rowfilter syntax, using some simple control flow, perhaps select case and then add them to the rowfilter query as the user enables/disables them in the form.i.e.
if RedCheckbox1 then Redvar = "Color = 'Red'" Maxvar = " & spinMax.value & "'
Why does the following query raise the error below for a row with a NULL value for barrel when I explicitly filter out those rows in the Where clause?
Dim query = From row As dbDataSet.conformalRow In dbDataSet.Tables("conformal") _ Where Not IsDBNull(row.Cal) AndAlso tiCal_drop.Text = row.Cal _ AndAlso Not IsDBNull(row.Tran) AndAlso tiTrans_drop.Text = row.Tran _
[code]....
Run-time exception thrown : System.Data.StrongTypingException - The value for column 'barrel' in table 'conformal' is DBNull.
How should my query / condition be rewritten to work as I intended?
I am saving some operational log information into a XML file. At any time the user can bring up a datatable to display the information. I don't want them to see the 'HOURLY' log. I can't seem to filter this out. Also I need to populate a list box with all the unique events for filtering.
I work with an access mdb When I run the program with the following code it gives an error "Nullreference exception unhandled" "the object... is not for an example of an object..." (very free translated but you will surely recognize this)
This is my code:
Private Sub TextBox5_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox5.TextChanged Dim dvFilter As DataView = Nothing
Oke I'm writing a small program where the user can fill in some textboxes and a Montcalendar and then put it in a listview by clicking the add button.
The listview has the following columns:
--Month ( which is retrieved from the monthcalendar view as followed: Monthcalendar.SelectionStart.Month) --Day ( which is retrieved from the monthcalendar view as followed:
I'm currently trying to create a system which stores different cases for clients using Visual Studio 2010.When adding fields from the database a table adapter is automatically created.Me.TblMattersTableAdapter.Fill(Me.MJPAccessDataSet.tblMatters)Now my problem is that each case may be at a different stage. They are either 'Active', 'Closed' or 'Archived'.So my question, is there a way to filter these results? I've tried creating DataTable and only adding the archived cases but I couldn't get it to work. I was trying.
I am using VB Net (2008) and SQL (2008) in Windows Forms, I am trying to filter a DataGridView , this DataGridView is being fill by Add New Data Source to my win form thus Dataset, Binding Source, Table Adapter are added to my form. Also my win form has 4 combo Boxes, a button and a DataGridView . Cbobox1 hold all the columns Name of the DGV , let say for instance that Supplier is the name of the column selected by cboBox1, CboBox2 which hold all the operators (being fill manually) like ( =, <> =< , >=, < , > , like, not like, between, not between, is null, is not null ), CboBox3 hold all the names of the Suppliers in alphabetic order, CboBox4 hold the same as CobBox3, Note: Cbobox3 and Cbobox4 values change as CboBox1 select a different column name. When using BindingSource.Filter every thing work fine, for this ex: let say cboBox2 is worth <> See part of my code EX:BindingSource.Filter = String.Format ("{0} {1} {2}", cboBox1.text, cboBox2.text, boBox3.text) except when using the operator "Between" I get this message āBindingSource.Filter do not support this type of operator". So this is why I am trying to use the Sql Select Command. Wandering if it is possible to use the already Sql Connection and Table Adapter to build a SQLString Filter and also could I use the curly braces.
I want to be able to use this program to filter through a list of doctors, and based on what doctor you select, only show the patients who see that doctor.
Here is what I have so far, the database has a column with just the doctor names so I thought I should be able to filter it by that and show the patients, but none show up. I don't get an error and it seems to refresh, but nothing ends up in the schedule.
[Code]....
Actually I just realized I don't think I loaded the data from the database as the form loaded. I tried doing that, but get an error where I called for the data to be loaded. I added the code where I try loading the databases.
"No value given for one or more required parameters."
I am using a datagrid to display a dataset. I would like to filter rows on certain fields (ex: ____ (Male/Female). I would want to it post-data retrieval on the client side.
I have a database with a Student table and a Class table. There are many students and many classes and each student is a member of a class.I then have a windows form that needs to display a list of student names in a listbox. However, I have a different form for each class. So for example in this form I have coded below, I need to display all students that are members of class51. The code I have so far is reading in all students from tblStudent and this is not what I want. I know that if I was doing SQL or something I'd simply write SELECT * FROM TBLSTUDENT WHERE CLASSID =his?
Private Sub frmAttendace51_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 'clear data set of any existing data
