I am building a real estate website. I have a table for properties (i.e. "houses"), a table for pictures, a table for features, etc. So each property's data comes from three, not only one table. I need to provide a function that retrieves requested property data depending on a search criteria, for example:
[Code]...
Does anyone know what the problem is with this error message? One or more errors encountered while loading the designer. The errors are listed below. Some errors can be fixed by rebuilding your project, while others may require code changes. Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
View 2 Repliesi have a DB table and a form the following fields , combobox and textboxes, what i need is how to write a query to retrieve data from the table when the user select some record from combobox
View 7 RepliesI'm trying to gather some WMI data, search that data and depending on the results change the color of a textbox and append some text.I can acheive this using a select statement but was hoping there is a more elegant solution as what I have generates a lot of similar code At the moment, the WMI data contains two properties I'm interested "State" and "ReplicatedFolderName". The"State" value determines the color and text that goes in the text box, however there are different textboxes for each replicated folder name.What I have which works is
Code to gather WMI data
For each mo in queryCollection
If (CShort(mo("State"))) = 2 Then[code]........
I'm in a bit of a quandry. I am trying to build a simple search form where the user selects the column title and in puts the criteria then clicks the search button. This is the code I am using
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
details = ComboBox2.Text
'column name selected by user
specifics = TextBox1.Text
'criteria input by user
[Code]...
I have three controls on my form; Textbox1, cboCity, lstCity When something (lets say "a") is entered in the TextBox1; I want to get each and every item in combobox cboCity that starts with "a" and add them to listbox lstCity.
View 5 RepliesI used this code in vb2008 to search or retreive data depends on calender the question is is that code true and it gives me error when i click in button under that line in yellow the msg "Keyword not supported: 'provider'."
Dim sql As String
Dim conn As New OleDb.OleDbConnection
conn.ConnectionString = "provider=Microsoft.ACE.OLEDB.12.0;Data Source=c:\user\Ayman\Desktop\lama\ayman project\totalsp.accdb"
sql = "SELECT * from total"
[Code]...
How do you store data in the access database and also to retrieve it? and also a search engine for the database?
View 1 RepliesI am trying to solve an issue in my application where the following exception is occurring: there is already an open datareader associated with this command which must be closed first. I am using TableAdapters, which maintain their own DataReaders, and everything seems to work fine unless I am interacting with one of my background workers.
In my code, I shadow the Item property of my collections so that I can retrieve the actual data from the database if needed. Here is a sample:
[code]...
Now each reference to the Item get property instantiates its own DataAdapter, so I am confused as to how the same DataReader will ever be used in this scenario. Is there something I am missing? All the TableAdapters do in fact use the same connection object, but I wouldn't think that would be a problem
In DataGridView I have three columns(year, month, day)
I wont first search dategridview by mounth, and the results search per day
I am doing a simple database project.I need to give the input in the database which is an access db from my input form and i have managed to do this part right.then i need to retrieve the details from the db using multiple search fields and show them in the datagrid view.I have 8 search fields(5 textboxes and 3 combo boxes). I also have included 4 other buttons which respectively clears the search boxes;clear the results of the gridview; show all results from the database;go to the input form and offcourse 1 search button.now all the buttons working fine except the search button. actually when i click on the search button if i include sql query for all the search fields only the first one works and also if i have clicked any other buttons before clicking the search button nothing happens, no result is shown and it happens the same if i search once and clicked any other buttons and come back to search, no result. I need to show the results in the gridview depending on the user input on those search criterias. user should be able to search in any combinations.I am using the below codings in my search form. the combo boxes are not bound.datagrid is bound to database though.
Public Class Paxsearchfrm
Private Sub Paxsearchfrm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'LAFDataSet.Table1' table. You can move, or remove it, as needed.
End Sub
[code]....
I want to retrieve query from MS.Access database criteria is between some date range,but I get the following error when execute my reader:Syntax error in date in query expression 'D_ate BETWEEN # @DateFrom # AND # @DateTo #'.
Dim StrSQL As String
StrSQL = "Select * from Pla_Comp Where D_ate BETWEEN # @DateFrom # AND # @DateTo #"
myCommand = New OleDbCommand(strSQL, conn)
[code]....
I've got a form that populates a DataGridView from an excel file. How would I filter that DataGridView so only the search criteria are visible. I need to search through 2 columns by all rows. I'm not very good with datasources I guess and can't figure out what all I need to accomplish this. DataSets, DataViews, DataTables.
View 17 RepliesCurrently I am searching through my list to find Customers that match on Address.
I need to match on both address and city. How do I rewrite my lambda Expression to match both criteria?
CustomerList.FindAll(Function(c) c.Address = addressToMatch)
[code]the main piece deals with the binding source filter. I've tried or/and. i tried to include that both codes in the string. i don't know what to do again i know you would recommend SQL but i don't know how to use that yet, so could you please recommend some bindingsourcefilter code to assist please. Its for a School project the search window looks like the attached picture
View 13 RepliesI'm using VB.NET with the MySQLConnector, I have an ID column with differents values, i.e:
101
102
201
202
203
302
304
305
306
I want to select all the values that start with "3" and then, select the MAX of them, in this case, "306"
I need some guidance on the best way to proceed with searching a file content. I have a large file (see attachment) that is in text form, some of these files could be upto 50 times as big, therefore creating a huge file. These files contain information that is produced from another application and therefore I am unable to change the format of the file.
[Code]...
I'm trying to search files for matches, and depending on what catagory the match is under, do a certain function... Say I have a .txt file that looks like this
[Code]...
Then I have a form with Button1 and Textbox1. Say I type "Cat" into Textbox1 and press Button1. It would then bring up a MsgBox that says "Match found under Animal catagory". But if I put "Three" in Textbox1, the messagebox would say "Found under Numbers catagory".
how I can Encrypt the data that is requested/sent? I wrote an application that connects to MySQL to INSERT/UPDATE/READ information from/to. The application also connects to a website of mine. I have obfuscated the codes so that people can not simply de-compile it to see my information. However I, or anyone, can simple use Wireshark or Fiddler to see information like...
How can I encrypt that so i can at least feel a bit safer... the attacker can also use replay attack on my website until they get into a user's account...
i am using visual studio 2008 and oracle database 10g. I trying to connect to the backend like this Subwindow "Server explorer". Push button "Connect to database" and make next chain Data Connection->Choose Data Source->Oracle Database->oracle Data provider for .Net->Continue->Data Source name oraclexe->Userneme: hr password: hr -> Test connection (answer "Test connected succeeded ")->push button OK and.
"Unable to find the requested .Net Framework Data Provider. It May not be installed"
i have made changes to machine.config
<add name="Oracle Data Provider for .NET"
invariant="Oracle.DataAccess.Client" description="Oracle Data Provider for .NET"
type="Oracle.DataAccess.Client.OracleClientFactory,
Oracle.DataAccess, Version=2.111.6.20, Culture=neutral, PublicKeyToken=89b483f429c47342" />
I am developing a vb.net application with MS Access Database . I have a field(cut) with double data type in table marks of markss.mdb.[code]On debugging , when I enter ,say 7.9 , in Textbox 1 ,I get an error saying Data type mismatch in criteria expression.
View 1 Repliesdata type mismatch criteria error .. please help im getting this error .. and i don't know where's the error ..
Private Sub frmUpdateChapter_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = D:dbCAI.mdb"
con.Open()
[code]....
I am using parameters in my code to update records in an access database.
One of the fields I am using in my sql Query Update statement is the ID field and it is causing this error -
Data type mismatch in criteria expression.
I have isolated the error and it occurs with the ID field in the Update query.
The DataType for the ID Field in Access is AutoNumber, Field Size is Long Integer and New Values is Increment.
In my code I have declared the Data Type as Integer.
Is there an obvious mistake in my code?
[Code].....
I have a reader that pulls dates out of a database, and saves them in a list.
dateList As New List(Of Date)
Probably a simple problem but I'm failing to see how or why it's happening.
The error message I'm getting is Data type mismatch in criteria expression.
My coding is below:[code...]
The error is coming up when i'm filling the dataset, i've already figured that it works when the WHERE is removed.
So i'm assuming the mismatch must be from (VirtualLearningExercises.Level = '" & UserLevel). UserLevel is defined as a integer in vb and VirtualLearningExercises.Level is data type number on access.
I've had this problem many, many times. And it's always turned out to be a small typo or "" around an integer, but I just cannot find what's wrong with my SQL Statement this time! SELECT Card_ID FROM Payment WHERE Customer_ID = 12 AND Card_Number = 1231231231231231 The table and fields are named correctly (the table is actually a query).The only thing I can think of is the card number being too large, however it works fine in my INSERT INTO statement!All of the fields are formatted as their respective data types, ie. Integers are set to integer, not string.
View 7 RepliesI run a query on Access and although it warns me about null fields, it can still run the query and add the rows.However, when I run through JET in VB.NET, it says "Data type mismatch in criteria expression".Is there a way for JET to behave like Access (ie. still run the query and add the rows)?
View 1 RepliesI'm realy new to this VB & Db programming#..I have two tables, one has the Vendor details, the other has all past and current PO details for each Vendor.[code]This needs to be done befere the 'For Each objDataRow In objDataTable.Rows. As the Dataset values will also populate another check Boxlist for 3rd Party.[code]
View 7 RepliesI am getting this error when create new record.
Data type mismatch in criteria expression.
Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim com As New OleDbCommand
Dim d As Integer = 0
Dim result
[Code] .....
I have a question about binding the datasource (MS Access database) to a listbox in a VB form. I have created a listbox and in the datasources explorer I have my datasource say SampleDS. I have several columns inside my datasource, say name, age, address in it. If I select name and drag to the listobx in the form, only the entries in the name column will be displayed in the listbox.
I want to know how to filter the name based on criteria. For example, how do I display names whose age >25?