I want to assign a value programatically to a field in current DataSet which is not bound to any control on the form. I am using the following method but it does not save the value "F" in DB on calling UpdateAll command.
Me.WorkOrderDataSet.Orders.status1Column.DefaultValue = "F"
My update command:
Try
Me.Validate()
Me.OrdersBindingSource.EndEdit()
[Code].....
I'm new with vb.net my problem is how to assign field value from database to a variable here is my code
Call connectdatabase()
dim uname as string
dim pass as string
Try
sql = "SELECT * FROM user;"
command.Connection = conn
[Code] .....
Probably a simple question for most of you. I'm putting members of a group into a SQL Database so we can better manage attendance and 'points' that they earn for doing work. I've written the program in VB and have the SQL server running fine. However, I have created a separate table to handle the points and have marked the relationship between the table - the column is named 'PointID', and should be unique for each person. When I add a new user to the database, I want it to automatically assign a value to that without me having to do anything extra beyond pressing save. From this PointID, it should identify the user and it will bring up the person's points.
View 12 RepliesI have a field which is static and readonly. The requirement is that the value should be allocated to the field at the login time and after that it should be readonly. How can i achieve this ?
public static class Constant
{
public static readonly string name;
}
Public Structure testStruct
Dim blah as integer
Dim foo as string
[code].....
I have this working for a single field in a text but im trying to add more than one fields data .[code]...
View 7 RepliesI am using Page.ClientScript.RegisterHiddenField("hf_Name",value) in an ASP.net application, how to override or assign a new value to the same Hidden Field 'hf_Name' in code behind?
View 1 RepliesI'm trying to select a 'Username' value from a table called 'tblUsers' where the 'UserID' is 1 and assign it to the 'Text' property of a field. The SQL command is fine, but I don't know how to assign the value to the file. I've changed the SQL command to select the value I want. I just don't know how to assign it to a field:
'Use these import statements, so you don't have to fully qualify the Oledb Object names:
Imports System.Data.OleDb
Imports System.Data
Public Class Register
Function Register()
[Code] .....
I am trying to assign a dataset to the TAG property of a textbox control in my application. The code seems to do the assignment without any error but I cant see the property TAG name or the assigned value using quickwatch etc. etc. The TAG property name does show in the design window.
Is this property useable in my version (academic 2002 version 7.0) or does the TAG and any assigned value it holds not show in quickwatch. I can only find 1 reference which seems to suggest the TAG property is not supported in early versions, but would prefer a definitive answer.
So I have a form that uses a datagrid with checkbox selections for multiple (read as many!) items.When I click a button labeled "Save to file", all the information on the form, to include the values of the selected datagrid items are then saved to a database. It works great most of the time.However, I have found that if I select more than 3 items in the datagrid, I get an error pointing to the data set and data adapter stating "OleDbException was unhandled - The field is too small to accept the amount of data you attempted to add.Try inserting or pasting less data".The code it points to is:
da.update(ds, "TrainingRecords")
In the dataset, I have tried to change the max length of the associated field.It was set at 255, and as long as I stay under that, I seem to be fine. But if I go over it, I get the error. I can change the design I guess to make it less wordy and therefore store less data, but is there an easier way?
This is the XML output of my command in a web browser.I need to get the MachineID value.
<?xml version="1.0" encoding="UTF-8" ?>
- <Response>
<Code>0</Code>
<Message>OK</Message>
[code]....
- Below code is in the LOAD form event.
- Within TMEMBERS table there is a TOTAMT field.
- Question is: What is the code to read TOTAMT field as I need to do some calculations as part of the LOAD event in this form. Not sure how as this was generated by the dataset wizard and not the tipical Dataset manual definitions.
'TODO: This line of code loads data into the 'DsMP.TMEMBERS' table. You can move, or remove it, as needed.
Me.TMEMBERSTableAdapter.Fill(Me.DsMP.TMEMBERS)
- calculation lines will be here.
how to set a field in a dataset table back to <DBNULL>?
View 4 RepliesI am using Dataset created by the wizard with BindingSource and Binding Navigator
For example, I placed a Textbox on the form, and bind it to a field.
I was trying to compare the field value stored in the sql server database with the data I have on my form.
Let say I run the form, and Textbox1 get it is value from the first row in mytable from BindingSource (let say value 1000) [code]...
I have a Windows Form application with a form that has an underlying data set. When the users click a particular button, the code clears some fields on the form but also is suppose to update a value in the underlying dataset on a field that is NOT displayed on the form.
In VB6 and VBA this is very easy to do. I simply says Forms!formname!NameOfUnderlyingFieldNotshown and pass it the value. How do I do this in VB.net with a Windows Form and underlying dataset?
On my form i use binding source bound to fields.. if a user starts to change something then hits cancel (i set all the fields to "" to clear them) and then if they choose that record again it shows nothing in the bound fields..
is there a way to reset/cancel from editing without loosing original values?
Im using a dataset to display data in a datagrid from a sql server DB. One of the colums I have in my datagrid is "Status" the table adapter sql statment selects certain items based on whether there open or closed e.g "where = Open ". I want to remove this row entirely and instead of displaying open or closed for status column, display the open/ closed results in colour on the datagrid. Im really not sure how to go about this whether i need to do it in the table adapter or some sort of property. I presume i need to write a sql statement and selct the identity of the row where x= open etc , is there a way of assigning a colour in sql statement so it displays on my vb form ?
View 2 RepliesI had a dataSet which link to a database. I need to add one field inside the database, After adding the field, how can I update and link it to the dataSet?
View 4 RepliesAdmin assigns the authority and get a new form to the new assign in with vb.net & access. I am not sure about this,I need a way to do the new form assigned? How?Actually, this project is the admin will assign the authority to a manager, and the manager will get the password to log in. Then, the manager once log in and will get a form to set the rooms who is going to use and date, etc, this is multi-manager to handle the room setting jobs.But, I think, I got stuck, I am not sure how to do the new form, HOW DO YOU ASSIGN THIS NEW FORM FOR EACH NEW MANAGER?????? THIS IS VB.NET WITH ACCESS.
View 3 RepliesI am building a data based application using VB 2008 an SQL Express. I need to create textboxes on my form using code, (With & End With) method. I need a simple code string that will allow the app to check if the field to wich the textbox wil be databound is Nul, If so the textbox will not be created.
View 8 RepliesThere are lots of questions about this but I've not been able to solve my problem using the answers to any of them (after many, many attempts..)
I'm working in vb.net creating an asp.net web application. I have an SqlDataSource and a GridView on my page.
I want to change the DoNotMail boolean value represented by a Gridview checkbox and automatically update in the database if the checkbox is checked from 0 (False, Will Mail) to 1 (True, Won't Mail) here is the code I used. [code]...
is it possible to do a two way sync on the entire gridview when the user hits a button so you don't have to do an update every time a row is changed? because the user might check the box and then check another box then uncheck a box and it would be a lot of updates...
Dim query as String = "Select * from openquery (devbook, 'SELECT wb.arrival_time FROM web_bookings wb ')"All I need is to convert my arrival_time into a datetime field in the query
View 1 RepliesI am trying to edit a dbf table. I would like to be able to rename field headings and change the field type, ie string or dbl, and the size of the field. is this possible to do with vb.net. I have connected to the dbf file but after that am lost on what to do.
View 3 RepliesI 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].....
When the user clicks an "Edit" button on my form, I want a box to come up which allows the user to edit a DataTable in a strongly-typed DataSet. What's the best way to do this?
View 2 RepliesI have code running in the Datatable.ColumnChanging event in my dataset. This dataset underlies a form and conventional drag/drop controls are in place for data entry.when the event triggers and runs, I am running code in the form that checks the dataset.HasChanges property. It is showing False. But this is immediately after the ColumnChanging event has been triggered.Okay, I see by others posts and MSDN that .HasChanges will only be true after moving off the row with the changed column. I have also noted lots of discussion about the advanced binding property of DataSourceUpdate Mode, but that does not address this issue.I guess I can do this by checking the state of the row for the binding source. Just seems odd that the event behind the dataset can be triggered and that does not change the dataset.HasChanges property.
View 3 RepliesI have tried everything I can to get beyond this error which shows below as <<<<< error here. It is trying to fill a dataset from a data adapter. If I change the SELECT statement to just SELECT * FROM xTable I get the correct number of records in each table. But anytime I try with a more complex statement I get the error message shown below which indicates System.Data.Common.DbDataAdapter.Fill(DataSet dataSet. I've completely erased all data and entered a new set of test data so I know there is no problem with relationships. Each table has primary key which is foreign key in other table. IS there something wrong with the Imports section: Imports System
[Code]...
i am trying to copy data from a standard Dataset to a Type Dataset (XSD) of same table structure. i want to use Automapper to do that one. So how can i do that using automapper?
View 1 RepliesI need to pick all data in my application from my database and use it in my form
my question : how to pick all data in my application then i use it
I have two Datagrids, One grid has all the customers garments on it with style number and contact length. The other grid has the users who have garment issued to them. the style number is in both grids. I need to loop through the users grid and say if the contract number is 1 from the first grid then the contract date on the second grid will be todays date + 365 days (year contract) I have looked at using a stored procedure and also a for each command but I am just getting stuck with it all. [Code]
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