Datatable Rows - Populate A Combobox With All The Results Where A Condition Is Met
May 5, 2012
I've populated my DataTable will all the results from a SQL search. Upon a button click I want to populate a combobox with all the results where a condition is met. My DataTable as a column called UserID and I want to add all results where the UserID is equal to a set value (for example 12). I can do this to add all results and I guess I could add a if statement inside this to be If Entry.Tag = 12 Then but is there a better way?
Im using a combobox that bound to a DataSet. The Dataset retreives it's values from SQL.
I can retreive the values fine. However only displaying (1) Column. Which is fine.
Here's where it gets complicated for me. The dataset has 2 other columns that get filled. I need the resulting columns to be sent to text boxes when I select a value from the combobox.
I need to pull from an access database to populate a combobox. Then from there I need to have a second combo box populated depending on the selection in the first box. My thought of an example would be a website that is setup for selecting car make, modle,year...can that be done in VB?
I have three sub tables that I want to process. For each I want to combine the rows, as they are only different by contents in the second column(I want to do the same to the fourth column, later):
method to query. I then use a datarepeater to display the results. Is there a way to programatically tell if no results are returned? I'm aware of the Dataset.tables.Rows.count, but can this be done after the select method?
i have datagridview with rows in it and one of the col show type of product. there are row with same type. on click of button i want to select all the row where productype = 1 (for example)
do i have to go thru each row in grid and check the condition for product type and then select it or there is another quick method.
How to update columns in datatable using linq without conditions. I have an idea that I'm just gonna loop all the data in the datatable but don't know what comes in LINQ.
Dim _tableBackLogs As System.Data.DataTable Do While i - 2 > 0 _tableBackLogs = Global.DataAccess.GetDataTable("SELECT SubjectID,SubjectName,Grade FROM SubjectPI WHERE RegNo='" & CInt(HttpContext.Current.Session("userName")) & "' AND Status='Fail' AND Semester='" & i - 2 & "'") i = i - 2
Doing this replaces the previous data in the DataTable. I want to retain the previous data i.e i want the new rows to be added to the DataTable w/o replacing the previous rows.
I'm trying to populate it with the results from a table in a dataset, something like Dim MyStringArray() as string = {Me.MyDataset.MyUsers.Rows.Tostring}. So I would end up with, StringArray() = {"Bob", "Jane", "Sally"}. I know I'm missing something very simple but I'm just not getting it.
I do however have a slight background with VBA particularly with MS Access, so I am not completely lost.I am recreating my Access database application in VB.net.I created a new project and added an Access database through the wizard, which automatically created a dataset for the database. On one of my forms I have, esentially, a search form. What I want to happen is have a text box, and as I start typing display a search result from my customers table in the list box under it. So for example, I type "A" and all customer names that start with "A" are displayed in the list box.I continue typing with a "p" (full string is now "Ap"), then all customer names that start with "Ap" are displayed and so on...
I did search on my own first before posting this and found a few tips but cant really get it to work the way I want. This is what I have... I know I would put this code in the keypress event of my test box, but just until I get it working I attached it to a button to search. (I basically got this online and not even sure its the correct usage.
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click 'Create a dataview[code].....
The item in red is where i get an error. it sucessfully builds and i open the find form enter a last name that I know is in the customers table, but I get the error "Cannot find Column ["whatever name i typed inthe text box"].So first of all is this the correct way of going about what I want to achieve?If so how can I get it to work?BTW the next step for the user would be to double click the customer in the list box they are searching for to open the customer Details form for that customer, so I would need an ID or Index attached to that item to be able to open that record in another form.
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?
I have a database containing the tables afdelinginfo,afdeling en personeel in afdelinginfo is information about departements stored like webdesign etc in afdeling is stored who is working in which departement and personeel stores the information on the persons I have a treeview which I'd like to populate the with the departements from afdelinginfo and in every departement node as child node the names of the persons working there. this is what I've tried:
#Region "personeel management Queries" Private Sub fillTree(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 'Declare variables and objects Dim strConnectionString As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|DataDirectory|\bedrijf.accdb;Persist Security Info=True;Jet OLEDB:Database Password=miniemen"
I have a data bound datagridview on my form. I need the datagridview to sort by oldest date, and then return only the 150 oldest. The goal is to export the 150 rows with the oldest date to a .csv file and then update the date column to the current date for only those 150.
Here is what I have so far: Dim appPath As String = Path.GetDirectoryName(Application.ExecutablePath) Dim tdate As Date tdate = Today.Date 'sort datelastemailed by oldest to be emailed first DataGridView1.Sort(DateLastEmailedDataGridViewTextBoxColumn, [Code] ....
I can get it filter by the column "status" and then sort by "datelastemailed". I can also get it to export only those 150 to the .csv file. My issue is that I need only those 150 to have their date column updated to today's date and then saved to the database. The only way I can see to get that done is to set a max number of rows for my databound datagridview and then loop through each row in the date column. How I can create a filter that limits results?
I have a little problem with interacting with sql server from vb.net. I look here [URL]. I made an sql server table called Per: Until here all it's ok. What I want to do is to insert in the two textboxes the user types Mike (in textbox1) and Bottomley (in textbox2) ,press the button search and stored the results in listview if he finds the row (and in this case it finds).
Here is the printscreen of my windows forms application vb.net (I am using visual studio 2008. So I type in the two textboxes Mike(textbox1), Bottomley(textbox2) press the button and it searches in my sql server table (if it finds -in this case I have this rows it's row1) it displays me the result in the Listview.
I currently have a form with two comboxes. The first cbo is being populated with a project number, which is being pulled from the first column of a spreadsheet. I now want the second cbo to read the first cbo and then find that project number on the spreadsheet; when it finds that project number, I then need it to copy data from the row the project number is on. I have converted to vb from vba. Below is the code I used in vba (which obviously does not work). I only need certain cells from the project row.
Dim proj_num, rng As Range Dim data, i As Long, j As Long With Sheet1
I have been having an issue with returning records from a SQLServer database where the date the record was created is between 2 user specified dates. When I populate the DataGridView with the results, they are incorrect and do not follow any recognisable pattern.
For example, if I specify the dates 05/05/2010 and 12/05/2010 I get the attached data in the DataGridView.
Code: Private Sub btnGo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGo.Click 'Clear the DataGridView
Currently I have a gridview bound to a datatable which is populated with groups from the AD. I need to be able to add search functionality so users can type in part of a group name and have the results display only groups that fit their search criteria.
In my datatable I have a single column containing a series of integer values. eg:- 1 2 3 1 2 2 2, etc
I am looking to do an equivalent of the following SQL statement :- Select Value, Count(Value) as Total From DataTable Group By Value Order by Value ASC
I'm looking to return the following from the above example :- Value Total 1 2 2 4 3 1
I'm making a questback in Windows forms (VB). I've succesfully setup the MySQL-database, and made connection with everything needed. I've also manage to populate a DataTable called tblAlt for the alternatives for the question.Then I try to populate each radiobutton with rows from the DataTable.Here's what I tried:
For Each row In tblAlt.Rows If tblAlt.Rows.IndexOf(row) = 0 Thenof the table).
I am trying to add the Sales Revenue for each of the three rows and populate them in their own text box and then get a sum of the three text boxes. For Example:
I'm trying to populate a datagridview with rows in the sqlserver 2005.how to use DataAdapters too well so I go back and forth between hard code and controls.I used the Datagridview control and added columns to it this way. 2 combo boxes, a check box, and 2 text boxes.The 2 combo boxes are populated with values that are already in sql Server for users to pick from. The task is displaying the description while the value is the task_ID. Here is my form on load:
Private Sub frmTimeSheet_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load currentDate = Date.Now.ToShortDateString lblDate.Text = currentDate
I have a data table that has thousands of entries. The table has employee production information: YearMonth, Employee ID, Pages worked and Jobtypes (e,k,o and r). I need to calculate a sum of each jobtype and a sum of pages worked for each jobtype, for each individual employee. I am pulling this data from an Access database and so unfortunately I am unable to use LINQ.[code]...
