I have an open database (dataset) with two tables. It is binded to toolboxes, but I have one field, what I have to calculate about other parameters. I have binding navigator, and I can set field values from controls (eg. toolbox). I can step my rows, with binding navigator. I can update my database. But how can I set field value from code?
I want a code line:
database.fields("fieldname") = something - or something like this
I need to set a field that i have dumped into a dictionary to a value that is always a string, (well, it came from an xmlElement, so the .value is a string)
Function setMembers(ByRef ClssObj As Object, ByRef nLinkObj as Object, ByRef xml As XElement) as integer
Dim fields As New Dictionary(Of String, FieldInfo)
[code].....
How do I set a field value in a VB.NET module using Reflection?
View 2 RepliesI have a databound ComboBox on my form. Is there any way that I can make the first field blank.
I can do this with a DropDownList in the HTML part of .Net but is there a way to do it for a ComboBox?
I'm using vb.net 2005. I've a textbox , a hidden field and a button. My textbox is setted to password mode. While editing an existing password, in order to display the password in password mode, i wrote txtPassword.Attributes.Add("value", strpassword)
View 6 RepliesHow does one set Originator (or From field) in an e-mail. I have tried setting RecipType to 0 together with RecipAddress and RecipDisplayName but keep getting an error when I try to set the RecipType to 0. Does anyone know how to do this and why is there such a woeful lack of documentation on this control?
View 1 RepliesI have a form in whcih users will be able to select the required field that has to be printed.. can u tell me how to add field in CR at runtime ?
View 1 RepliesI am using VB 2005 pro and sql 2005 express.I have a form linked to a sql database. and linked a sql field to a textbox. All I get when the program is running is what is in the database displayed.
But what I would like to do is take a value from a textbox and add that to the chosen field database.
I am a beginner and looking for simple code.
I am trying to set the value of the image to
Code:
="file:///logo.jpg"
It works if I put that directly into the "value" field in the rdlc layout. However, if I create a "paramImage" string parameter and set it like this
Code:
Dim ImageParam As String
ImageParam = "=""file:///logo.jpg"""
[Code].....
Im writing an app which connects to a SQL Server database, via datasources / datatable.When Im looking at my .xsd I can see DataTables containing DataColumns. Each DataColumn has a 'NullValue' property which defaults to '(Throw exception)'.Because I have nulls in my tables I have gone through the fields and set all System.String fields to NullValue = 'Empty', System.int32 field to NullValue = 0.
View 1 RepliesI've placed this on a VB2008 project but it's telling me adNumeric,adVarChar & adBoolean are not declared, I'm assuming I need to "DIM" them, but what as? plus I need each field to accept NULL values, how do I do this? Also I'd like to add a field for accepting images.
Code:
Dim cat As New Catalog()
Dim col1 As New ADOX.Column
Dim col2 As New ADOX.Column
Dim col3 As New ADOX.Column
[code]....
This error has me completely baffled. There is no indication (that I ca FinD as to what field won't handle the information. Heres the situation:I am using an Accees query to insert a new record in a table with 49 fields. Of these fields, 1 is an integer, 7 are booleans and the other 41 are text fields. The text fields represent either Time of Day or a Timespan.
My field sizes are:
For time of day 8 digits(example 08:00 AM)
For a time span 5 digits(example 03:30) I will never exceed 2 digits for
hours
I have checked every field in the dtatbase and they are all as noted. I am at a loss as to how to proceed.
I am working on my media program which utilizes the amazon ecs web service. So far it does a search and pulls a list of image url's for the dvd covers.
Is what I want to do is take those image urls and somehow feed them into a datagridview, so that the user can scroll through the images and choose the right one.
Here's what I have so far
Code:
If item.IsSetLargeImage() Then
Dim largeImage As Image = item.LargeImage
If largeImage.IsSetURL() Then
[Code]......
I am writing a school project in VB2005 and am trying to hook up a second combo box that gets its information of what to display from the first combo box. My application is where a student takes a "test" but they can choose what instructor they want in the first combo box. From there, they choose from a test of what each instructor offers in the second combo box. As of right now, my first combo box works great and my second combo box has nothing in it. Just a note, when I debug, it shows my iUserID value as 0.
[Code]...
I have a RDLC report with a list that contains a table. I require a calculated column whose value depends on values from previous rows. Outside of a report I accomplish the same thing using code in a DataGridView's DataBindingComplete method.
From within a report how do I refer to specific cell values from previous rows? embedded code, but I have not had luck (#Error).
I am using Visual studio 2008 to build a web application. What I am trying to do is retrieve data from a database and populate text boxes based on the results.
View 4 RepliesI am using VB 2008 and SQL Server 2005. I have a texbox in which I need to show the field 'domain' from the table x. I am getting the field in the format needed from a stored procedure.Below is the Vb code that I am using in which I am getting an error message: Invalid attempt to read when no data is present.at this line sDomain = sDomain & " " & v_DR!Search
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I've got a database with the fields: tuneName, Artist, Sales and yearIssued I'm trying the load up just the first field (tuneName) into a list box. I've managed to load the database into VB but I dont know the code to do this specific thing.Also I want to be able to select one of the items in the list box and the rest of the fields to appear in text boxes on the form.
View 2 RepliesI have a database and I wanna select a field ..I usually do this with access:
dim chosen as string
chosen = textbox1.text
Dim querysql = "select * from table where field = " & chosen & ""
But with SQL it doesnt work =S I really need to make this work .
I know this sounds simple to the majority of the database gurus out there but I am finding it difficult to find anything related.I am using Visual Studio 2008 VB.net winforms application.I have a form which contains a datagridview. what I want to do by push of a button is set the field "OnHand" either to default or 0. The 'either or' is really for you guys. Which ever one works the best in terms of reducing code or functionality is obviouls prefered.Once the 'OnHand' Fields in every record has changed then I would like to save all the data back to the database'This is more than likely very simple I just cannot find anything that discusses this kind of thing.
View 1 RepliesI'm using an access database in a program that I'm making for my school, the user is able to select an item from the menu, then it sends it to a list box, there is also a textbox to put a quantity of how much of the item you want. I have a field in my database called Amout Ordered, I want to update it with the amount of each item ordered, and I can't figure out how.
View 1 RepliesI have a form that allows use the use to change the Email address to be sent to and that is save in a my.setting. my issues is that the Email is in a variable to be used and Dim sendTo As New MailAddress("Email Address")well I cant figure out how would i variablize the "Email address" I tried to place a Variable just says its not a address because it a variable. but it work if i put in a email as a hardcode.
View 1 RepliesIm pretty use to doing loops (although still relative new to vb) in my code however am having difficulty setting up one that picks up an entry in one data table and then sums a field in another where records have matching criteria. Example:
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What i am trying to do is set up a datagridview on a form that shows the summary data. The time is controlled on the form by a trackbar (output to textbox) and I started setting up a loop using (For/Next) to isolate firstly the matching entries in field 3 (time). This works fine. I then used compute to sum the the field 2. However what i want to do is to loop through table 2 and where entries match i.e. where Field 1 in table 2="A" sum matching entries in table 1 where the DateTime matches.
I have a crystal report that fails on a formula field but I cannot see why.
Here is my code:
Code:
Public Function CreateReportPDF(ByVal dsReport As DataSet, ByVal CrystalReportPath As String, _
ByVal reportSize As String, ByVal landScape As Boolean, _
ByVal dsParameters As DataSet, ByVal filePath As String, _
ByVal fileName As String) As Boolean
[Code]...
I've been staring at this and can't seem to come up with a solution. I've tried several different methods that i found on the web but to no avail. I'm hoping you all could take a look at the code below and give me some direction as to why I'm receiving the error "The INSERT INTO statement contains the following unknown field name: 'Deposit_Date' . Make sure you have typed the name correctly and try the operation again. Sorry if it's kinda jumbled below
Code:
Dim SQL As String = "INSERT INTO Deposits ( Deposit_Date, Deposit_Time, Location, Miscellaneous, " & _
"Miscellaneous_Adjustment, Dispense, Dispense_Adjustment, " & _
"Replacement_Card, Replacement_Card_Adjustment, Deposit, " & _
[code]...
I am working on a 1-page report, that basically consists to select 1 record from table and bind values to proper fields (eg. =Fields!name.Value).However, I have one field in the table that will be just "Y" or "N".When this field will be "Y" I would like to show in the report "Yes, I do."; otherwise I would like to show "No, I dont."
View 1 RepliesThis is the only code I could find and it doesnt work:
Private Sub DataGridView1_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles DataGridView1.MouseUp
Dim pt = New Point(e.X, e.Y)
[Code]....
I wrote some code to update the count of a field in a table, but it is very slow. So I'm trying to do it in a subquery to speed things up, but I'm not very good with subqueries. I'm getting the error "Subquery returned more than 1 value".
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Using VB2008, Access
I have 2 fields defined as date/time (short date).
I need to store dates fields which may at times be blank (null), how do I go about that?
I tried using:date.minvalue and that stores the value of 12/30/1899. I would like the field to be blank until the user enters a valid date.
I am linking to an SQL table with 'Money' field. When i try to update this field in VB.NET I get an error message that "Can not convert a character value to money. The char value has incorrect syntax".
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