Currency Manager With Database Lookup Not Working?
Aug 22, 2009
I have a form with labels that have databindings on them from an access database .. im using vb 2008 .. and i have a search query and a next button on the form displays when the currency manager count is greater than 1, to be able to display the next set of data.. now the problem i am having is that when i click the next button, its not changing any of the data in the labels on the form .. i have no clue why it isnt working, im for sure the code i am using is correct, i've tried for hours and cannot figure out where the problem is..
here is the code that i am using
Dim currManager As CurrencyManager
Private Sub frmLookupChild_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
I have a code that binds the data from the database to textboxes. The problem is I want to make one of the textboxes Payment use a dollar sign.I tried formatting it as shown in the code below but only the first record gets formatted, the rest do not. When I click the next button, the dollar sign disappeared.
I have tried everything else I know, FormatCurrency but no luck.Payment is the name of the column in the database, the data type in SQL Server is Small Money.
I have a form which has a dataset and a datagridview. The form is built with 3 textboxes (TxtPracticename, TxtRegion, TxtPostcode) and the datagridview (Dgvcontacts) has 4 columns (address1, address2, address3, town). So when the form loads the textboxes and columns are populated by the following;
I started a forms solution in VB 2008, created a datasource to an access database (2010) and used the datagrid view to display the data. 3 fields in the access database are lookup fields with 2-8 values each, typed in by me, since the linking to other fields did not work. This is not working either. When I change the column to combo-box or not, those values, typed into access, are NOT showing up in the datagrid. the combo box has its drop down arrow but the value fields are empty.
I have a program which I am securing with a Username and Password box, in which the user enters their credentials. In the database, the username is a number field (VB would not accept this as a string and was looking for it as Int32). And the password is a text field. I have the form linked to the database by an OleDbConnection with a DataAdapter (DaUser) and DataSet (DsUser). I am using a datarow which I have declared at the top of my code i.e. Public drUser As DataRow. The problem arises when the user enters their username and password.
The following code searches the primary key row of the database (Username) drUser = DsUser.Tables("User").Rows.Find(txtUsername.Text) When the Username entered does not exist, I'm getting this error when trying to display on the form the users email: NullReferenceException was unhandled - Object reference not set to an instance of an object. I've tried both if statements and try/catch to basically say if the Username doesn't exist... display an error message etc.
I have a lookup table that contains a label that describes the data to be written back to my database. For example:Label = Manufacturing Repair Issue (This is what the user see's in my front-end windows app)Data = Mfg_Repair (What I want to save to the database when the user choses the label)
I am trying to create a currency converter that will convert currency. I have a text box to enter the amount and 2 combo boxes to choose which currency you are converting from and to.
I am using a webservice site XML that contains the conversions.
The problem is I cannot get the display to work properly.
I am trying to create a document manager for my winforms application. It is not web-based.I would like to be able to allow users to "attach" documents to various entities (personnel, companies, work orders, tasks, batch parts etc) in my application. After lots of research I have made the decision to use the file system to store the files instead of a blob in SQL. I will set up a folder to store all the files, but I will store the document information (filepath, uploaded by, changed by, revision etc) in parent-child relationship with the entity in an sql database.
I only want users to be able to work with the documents through the application to prevent the files and database records getting out of sync. I some how need to protect the document folder from normal users but at the same time allow the application to work with it. My original thoughts were to set the application up with the only username and password with access to the folder and use impersonation to login to the folder and work with the files. From feedback in a recent thread I started I now believe this was not a good idea, and working with impersonation has been a headache.I also thought about using a webservice but some of our clients just run the application on there laptops with no windows server. Most are using windows server or citrix/windows server.What would be the best way to set this up so that only the application handles the documents?
I have a function that will allow me to edit the manager property of a user here:
Public Shared Sub SetManagerProperty(ByVal de As DirectoryEntry, ByVal pName As String, ByVal pValue As String) 'First make sure the property value isnt "nothing"
[Code]....
But what if the manager is not in the Company OU? How can I edit this to search for him in the entire domain?
Im making just a fun project using visual studio 2010. Its a simple password manager. The issue im having is trying to put the information from my Access database into a gridview. The issue im having is that it just doesnt do it, no error, just no results. I have done some looking, tried different examples but no luck on this.
Here is what i have for this part:
Dim mypath = Application.StartupPath & "\User Passwords.mdb" Dim password = "password" 'I do have an actual password, im just not going to put it out there
Dim connString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & mypath & ";Jet
I have a datagridviewcomboboxcolumn which has its .DataPropertyName set to a int field, its .DisplayMember set to a nvarchar field and its .ValueMember set to a int field on a lookup table. I have captured a dataerror which states that the control is trying to push the .DisplayMember(nvarchar) to the .DataPropertyName(int) field. When I load existing data it works fine. When I try to leave the datagridviewcomboboxcolumn after selecting a different value in it or leave it when I add a new row, I get the error. What am I doing wrong?
Simple Code lookup to get Description I have a static list of Street Type Abbreviations and their associated Street Type Descriptions: RD to Road. I have the complete list needed. There are 37 elements in the list - 37 Street Type Abbreviations with their associated Descriptions. The lookup will only happen once. The input lookup field is in a single field: stType.
i am using the LookupEdit control from DevExpress fairly heavily in my projects. It is like a combobox, but it is bound to a datasource and can display multiple columns from the datasource. A single column is identified as the "value" column and a single column is identified as the "Display" column.
I use the LookupEdit control on my forms to give users a pick-list of appropriate values for a particulat database field. Each field has its own table in the database holding said values, commonly referred to as a lookup table, and each lookup table is used as the datasource for each paired LookupEdit control. Of course when a form is being filled-in by the user this works great. And it works good when the user opens a saved record into the form and I set the EditValue of the LookupEdit based on the value stored in the database. Pretty basic stuff right?
Now here is the problem... Let's say a lookup value is no longer an appropriate entry and so it is removed from the lookup table. Say I sell cars and one of the fields in the Cars table is Color. And I have a lookup table called CarColors and the selections are: Black, White, Red, and Silver. Now let's say we sold some Red cars in the past, but now we no longer carry Red as an option and we probably never will. So I remove "Red" from my lookup table, and now when I load an old Order into my form the LookupEdit for Car Color value now shows NULL. What is the best way to handle this situation? ProcessNewValue? Set NullText property? Use a bit field in my lookup table for IsActive, and set to FALSE for Red instead of deleting it?
Obviuosly I want to retain the historical values while maintaining a currently valid lookup list. And I know this question goes deeper as there are probably database design considerations like whether or not to put a constraint on the foreign key relationship between the lookup and child table, etc... I should also mentioin I am using LookupEdit control rather than a ComboBox becasue a lot of my lookups have other information like Description, Sort Order, or are coded and thus require a multiple column display.
I have an Access 2003/2007 application that pulls computer names from my network along with their last know TCPIP address. This data is created by another application. I am trying to use the IP Adresses to install software via a push application that accepts a list of IP Addresses.My app has a history table of every comuter that has been checked to see if the software is installed. I use the Fully Qualified Domain Name to make this verification. I then populate my text file with the IP address of the computers that have not been installed.This all works well if the last know IP address is still valid for that computer.What I am trying to find is a function that I can pass the FQDN to and have it do a NetBios lookup to return the current IP Address from our DNS Servers so I can be sure that the IP addresses I am populating the text file with match the FQDNs of the computers I am trying to push the software to.I found some info on System.Managment.dll. For some reason Access will not let me add it to my library references.Does anyone know of a standard library function I can use to achive this.[code]
I am trying to setup a macro to lookup a value. Its very basic, I am trying setup a sheet to build tariff requests for mobile phone deals. so on sheet i will have lots of macro boxes that simply pubulate a table with a value on sheet 2.
Its basically so a sales person can go onto the excel sheet click click click and it will produce a table of all the product on each mobile number connection.
I am converting a DTS update lookup to an SSIS lookup with an update query. So far it doesn't seem to work.
OLD DTS ACTIVE X CODE: value = DTSLookups("apple").Execute(DTSSource("ID2")) SQL Query in DTS: UPDATE TABLE1 SET STAMP="TEST" WHERE (ID = ?) In SSIS:
Create a lookup, use same above query, and I get an error if I click on column: "Parameter information cannot be derived from SQL statements. Set parameter information before preparing command"
IS there anyway to accomplish this in SSIS with a lookup? Or is there a better way?
in item Search form i can search the item that i want, if i found the item that i need i will select the entire row and fill this row in DataGridView in frmSWSfromGrid.i been able to achieved this same scenario but it uses textboxes.the ff. COde
frm Dialog code Public Property DepartmentID() As String Get
I am almost finished building my application. All the data need is being inputted from various locations. I have a form that is suppose to consolidate all this data into a specific format. There are 47 fields that have to be populated and/or calculated based on two fields, the Username and a date range (this part is done). I was trying to set each of the TextBoxes equal to the SQLCommand that would return the proper value, but i am not calling it correctly. Would somebody please take look, is there something i am missing, do i need to write it in a function? I have had to use the Select statement itself in a couple of filters so I'm pretty sure that is correct, but i need help getting it to run the sqlcommand.[code]
I'm creating a Macro for reporting purposes and trying to create a formula that will look at a prior days report, save it out, and work off of that one.
i am using a third party tool "lookupedit control" which is similar to a combobox. as we type in the address bar of our browser we get the related items in the dropdown of the address bar. eg: if e type go we get all the items starting from go in the drop down of the address bar. I want to implement the same functionality for lookupedit or a combobox.
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 trying to setup a lookup combo box in my web page. I was using a linq data source but I then moved my linqtosql code to it's own class library for my DAL dll (took out of app_code folder). So, I am converting the page code to be able to still have lookups driven now by a biz object.Here's what I have done in my biz layer...
Public Class KosherTypes Public Shared Function GetKosherTypes() As List(Of KosherTypeLookup) Dim db As New DBDataContext
[code]....
I then setup an object data source and mapped it to this class.I have a few questions as when I was doing internet searches I didn't find anyone that seemed to be doing this and yet I know lookup tables / combo boxes are common...I went with returning a list but I could have returned an IEnumerable or IQueryable. In my reading it seemed IQueryable had more functionality for linq to sql but since I am returning a simple two column list then I only need to return an IEnumerable or List. I went with a List since it's strongly typed.
Simple Code lookup to get Description I have a static list of Street Type Abbreviations and their associated Street Type Descriptions: RD to Road. I have the complete list needed. There are 37 elements in the list - 37 Street Type Abbreviations with their associated Descriptions. The lookup will only happen once. The input lookup field is in a single field: stType. Not trying to get fancy. but what is the best approach? Dictionary, List, two dimensional array, etc. Started with Dictionary but the .Add was getting redundant. Two dimensional array let me initialize the values, but searching an old school loop.
I'm using VB.NET but any other known language should be fine as long as it uses basic features. My task is to create astrological compatibility chart, when two users have certain astrological sign as inputs and there is a text about those signs compatibility. for those who are unaware of astrological signs but still want to help, there are 12 signs. Each sign has different compatibility with other sign or itself. So basically i get into 12^2-12 conditions. ie. Aries with Cancer "do not match at all" so I can save one record of that issue as backwards it is the same (thus -12 at the end). Question is simple is there any other way to create this except of using 12^2-12 case issues...
