[2008] Filtering And Displaying A Database?
Jan 20, 2009
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.
vb
Public Structure ScheduleOwner
Dim _doctorname As String
Dim _description As String
[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."
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Jan 20, 2009
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."
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Mar 9, 2010
How to filter data from the database to combobox? For example, the database have the data, and i have a combobox, then i want to type the first letter, and the dropdown list comes down that the data have the first letter that i type in the combobox.
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Feb 4, 2012
I have database like this [URL]but I will need to display only certain columns, which will depend on which user has logged in. Each user will have a unique ID, and so I want that that datagridview would only display the rows, which are for him, well have his ID, so that he couldn't see other users information, but only the one associated with him.I also need to output that user's forename and surename into label, it is stored in the database.
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Feb 9, 2012
How do i get this code to display my image using a database this is my code.
code
Private Sub Details()
Dim oleDBC As New OleDbCommand
Dim OLEDBDR As OleDbDataReader
con.Open()
[Code]...
Unable to cast object of type 'System.String' to type 'System.Drawing.Image'.
but if i use lblName.Text = (OLEDBDR.Item(1)) it will display the path to the image.?
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Mar 10, 2010
Public Class ReceiptSpectacles
Private Sub ReceiptSpectacles_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[code].....
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Aug 24, 2009
Well, just struggeling to decice on which would suit my situation best. I am developing a simple app to show a log of radio messages. Should I display these in a listview or in a datagridview? What is the actual difference?
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Mar 24, 2010
Private Sub DisplayList(ByVal CusRef As Integer)
Dim ConnectionString As String
Dim SQLString As String
Dim TitleString As String
Dim conn As System.Data.OleDb.OleDbConnection
[Code]...
So that works, but how do I display multiple things, CustomerID & CustomerName on the same line?
I can't get it going, it only puts my CustomerName under the ID
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Sep 25, 2009
I had done this by using the query builder (in VS Studio) but soon found out thay I gain no points by doing it this way as I am not using any code. I have tried to adapt the code I had to insert data into my database, just changing the SQL sintaxa and some other bits, but it is not working yet. Well, it gives results, but I think it is still geting the results from the query I had built using the query builder. Here is the code I've got so far:
Public Class Form2
Private Sub btn_search_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_search.Click
Dim str_search As String = txt_search.Text
Dim str_dob As String = txt_dob.Text
[code]....
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Dec 28, 2011
im using vb.net winform.i want to update a datatable to sqlserver. but before that. i need to check by comparing it to another datatable(same structure but contain new data). i need to insert new data only.
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Mar 22, 2011
I have a filter which is applied to a database on a listboxchanged event, and applies the listbox.text as the filter, so for example if the selected item in the list box is 'Terminator 4' then thats the filter. Its set on the listbox selected changed liek this;
[Code]....
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Feb 1, 2010
I have a dataset (WW1Dataset) with one data table(WW1).(database used in an access database) I'm trying to filter the dataset e.g a user wants to filter by a chosen surname (SurnameTextBox.text) so the datset is filtered to display only those records wherethe surname column in the dataset matches SurnameTextBox.text.
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Apr 5, 2009
i have a datagridview(has about 7000 rows) like this:
ID Name
9 David Brown
11 David Blue
17 Hans Yellow
what i want to do is when i write something in a textbox, i want to show rows only which starts with my text.for example, if i write "dav", then first 2 rows should be visible.
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Aug 15, 2011
I am running a stored procedure and presenting the data back to users in a simple datagridview. I'm unable to figure out a way to filter my data through the SQL side, so I wanted to see if I could filter data through the datagridview. Basically my sql query returns back values of "activity" that are either added or deleted, and I only want to present data back to users that are "added.' Is there a way to do this by filtering the contents of the datagridview?This is what I have in my codebehind for the page for both the SQL connection string, and the stored procedure. I'm assuming that this would be where I would filter the information.
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles oncallsubmitButton.Click
Dim dt As New DataTable
Dim da As New SqlDataAdapter
Dim cmd As New SqlCommand
[code].....
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May 2, 2011
I am pulling different information from the same file at two different times: 1) The first time, I pull information that is inserted into a combobox. I need to use the combobox as a filter for when I pull the information a second time. 2) I pull different information from the same file, and it is outputted into a datagridview table. I already have a filter in place when the information is pulled the second time, and I was wondering if I could add to that filter or if I have to make another filter? The filter (or filters) will be used to filter the information in the datagridview before it is outputted in a chart.
This is the code for binding the combobox to the information
Dim cnRange As String = "provider=Microsoft.Jet.OLEDB.4.0; " & _
"data source='" & strFileName & "';" & _
"Extended Properties=""Excel 8.0; IMEX=1; HDR=No;"""
[code].....
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Mar 21, 2010
I am having some trouble filtering a datagridview using a combo box. Does anyone have an samples of code that I could utilise to do this exact task? I have tried using the samples here url... but I cant get them to run in Visual Studio 2008.
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May 5, 2010
I am trying to filter a datagrid based upon stepping through records and suming the contents. What i am trying to do is get to select records that equal (or if the sum of records exceed the entry they revert to the previous record) or less than the entries specified in a combobox on a form.
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Dec 15, 2011
Alright i have a code for getting the path of drop file to my label.Private Sub Label1_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles Label1.DragDrop If e.Data.GetDataPresent("FileDrop") Then
Dim theFiles() As String = CType(e.Data.GetData("FileDrop", True), String())
For Each theFile As String In theFiles
MsgBox(theFile)
Next
End If
End Sub
[Code]...
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Jun 12, 2011
My client wants that my table be filtered based on the values from a field regardless of its order.
Example: I want to search for a student whose surname is 'Thomas' but the keyword is not the first in the field. The 'Surname' field, instead, contains the value "Ian Thomas".
If I am going to use this code;
bindingsource.filter = "surname Like '" & textbox1.text & "'"
It will base the searching on the first characters of the field only.
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Jan 14, 2009
my table is:
CREATE TABLE [dbo].[VarianceReport](
[ID] [int] IDENTITY(1,1) NOT NULL,
[FN] [nvarchar](50) NOT NULL,
[Fdate] [nvarchar](50) NOT NULL,
[code]....
But inserted null value when all textbox is temp!?!How to resolve this problem and best way for this action?
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Aug 16, 2009
I need to use .Select and filtering year on a date field,how can this be done,the next code give me error : the expression contains undefined function call year() vb.net For Each wRwTmp As DataRow In wTblC.Select("year(start_date)=" + wYear.ToString)Next
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Oct 28, 2009
My program so far reads a certain webpage's source code and places it in a textbox. This much has already been accomplished.
Now I need to pick certain strings out of the rather large amount of text data and have the lines stored in variables, but the trick of it is, the exact string is unknown. The exact function should be, that the code finds certain tags from the source code, say <td> and </td> and takes the string data in between those tags, what ever it may be.
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Apr 15, 2009
I tried to show the rows of the table I created. First I added a bindingsource object and selected my database and table. Then I added a textbox and set databinding>text to the item i wanted in the table. In the begining it worked but then it suddenly stopped working and even though I built the program again from scratch it no longer works.
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Nov 24, 2011
I have a table in an access database that binds to a datagridview with a binding source. The table is named Charges and contains all the charges to a lot of accounts. Let's say I only want to display the charges that are associated with Account ID = 1.
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Sep 13, 2009
I'm currently attempting a project where I need to display a series of images from a database, in thumbnail form, then fullscreen when they are selected. Next/Back arrows will be used to navigate through different pages of images. These images will be across a number of categories each one with a different table in the database. It is very important that the user can change the images in the database.
Rather than have a number of different pages and each image designated to a picturebox, I was wondering how I could make it so the program just displays the next 6-8 images from the database in the same picture boxes, giving a message when the it reaches EOF, This way the number and order of the pictures can be changed just by changing the database.
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Jun 22, 2010
I tried the same.. but its not displaying any data from database[code]...
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Oct 3, 2011
I created a small databse program, when I created the search field I wanted to display the results in "listbox" which I found some code that work perfectly
For each row in ds.tables("Tablename").rows
me.listbox1.items.add(row(1).tostring())
Next
but I also need to display "row 2" ACCORDING to the selected item from listbox in a textbox.
since the listbox is displaying the result of a search, it's been hard to find, how to do this?
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Oct 27, 2009
i have managed to add a database to my project its kind of a client database tells me their first, second name, email, date they last called etc etc anyway everything works fine it allows me to add, delete edit etc no problems.What i wanna do is on my main form i have a DateTimePicker1 if i select a date on the DateTimePicker1 how can i make it display last client calls in a RichTextBox?
[Code]...
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Feb 15, 2012
I seem to be having a problem with displaying data in a second form. I've created a linear search algorithm which works just fine - it locates the records from the database. I now want to be able to display the record in another form, I've attempted this using the code below but it doesn't seem to work:
Public Class formSearch
Dim searchItem As String
Dim currentRecord As Integer
Dim Provider As String
Dim Source As String
[Code] .....
The commented out lines are the ones that don't seem to work. The "txtfirstname" and "txtlastname" fields are located in the coding of another form, called "formcustomers".
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Dec 24, 2009
I am displaying four fields from a access database. This code displays the records in listbox4.
Me.ListBox4.DataSource = DB
Me.ListBox4.DisplayMember = "fldRecNo"
Using the doubleclick event, I would like to display on a label the record number that I doubleclick.
Windows 7 and VB 2008
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