Update By Taking Data From Textbox Fields On A Form?
Aug 22, 2011
I am making a booking system. I am using same form for insertion and updation. How can I update by taking the values from the textboxes. For example if the user enters value for just 2 out of 8 fields then How can i update just 2 fields without affecting the rest of the record. I mean to say that if I use a single update query using all the fields then if some textbox is left empty then it will replace the database field value by null or something else.
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Sep 17, 2011
I want to take the values from textboxes on a windows form and then update the values in the sql server database...I want to update only those fields for which a value has been entered by the user and leave the database fields as it is (no change or updation) for which the textboxes are left empty by the user.....I opted for sql command and then i couldn't find out How can I generate the query dynamically for such a situation??? Like I intialize the string by str= " Update Bookings set " and then how i can alter it by considering the textbox values that have been changed....I couldn't find the way...I need shortest and optimized code for this situation....
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Sep 16, 2011
I want to take the values from textboxes on a windows form and then update the values in the sql server database...I want to update only those fields for which a value has been entered by the user and leave the fields for which the textboxes are left empty by the user.....How can I generate the query dynamically for such a situation???
Edit:
I haven't yet coded for the update option...Here is my insertion code and i wanted to implement the update feature the same way just couldn't figure out how i can generate the query dynamically....It's a Booking System application
[Code]....
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May 15, 2011
I was using 2 forms, the first one has general data capture and the second one is a calendar form. On Form1 I have mulitple windows controls. A Textb ox and beside a Calendar button. When I click on a Calendar Command button, it should open calendar form and once the user selects the date, the date should be placed in the text box on the form1. Identical to this on Form1 I need multiple textboxes that needs date to be captured.I cannot use a global variable for this as I need to validate mulitple text boxes. To explain this, I have a Transaction Date and Date Received. I need to validate whether Transaction date is prior Date Received or not? I dont want to use several global variables b'coz I might need multiple validations as above. Please help me on this.
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May 14, 2012
I have 5 forms after the first initial login form which i believe to be correct You are to enter customer details which so far i believe to correct(all fields must be filled) I then have a Service or repair screen whichever the user wants. on the repair screen i have a checkedlistbox with repair types in. anyway after all of this i have a calculate button on either service and repair screen and i want to know how to pass all customer details and repair or service onto an invoice displaying the cost of the service or repair Inlcuding VAT and Hourly rate
[Module Var
Public Title As String
Public Surname As String
[Code]....
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Jan 6, 2011
i have a form issue and return form. where Issuer_ID is the primary key, this form uses for boht emp and for student issuing book. at run time the user has to select a radio button for student or for employe. if he select student so after entering the full information when he press submit button so student query is execute and data stored in database, keeping the Employee field null, and when user select the employee radio button and after pressing the submit button, so employee querry executes and stores data in employee field, keep the student filed null. remmber and Student ID and Employee ID or foreign keys in isuee and return table and radiobuttons are not the part of database, its just on form.
now i want that when a user gives his issuer ID and at the lost focus event of issuer id, it is checked that if the record exists so the data is bind on the form, if does not exist so the user has to make entry, but if the data loads on form so how user will find out that this data is of student or of employee?
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Mar 4, 2009
I'm unsure as to how to take two pieces of information from a table and display them into a textbox. The textbox should display the 'Balance' and the total money available for withdrawl (balance + overdraft limit). I believe I need to use the data bindings command e.g. TextBoxDetails.DataBinding.Add?
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Sep 5, 2010
We have two update panels on our webpage. Now first update panel is having button cancel. While second update panel is having a file upload control.Now if the user uploads a file that is going to upload in about 2 mins, and in between, say after 30 seconds the user clicks the cancel button, the upload taking place in update panel 2 should stop.
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Sep 3, 2009
experience on how to create an engine using C# (VB.NET is okay too) that is generic enough to handle most cases of MS Word text fields I need to fill with data I'm getting from a database? In short, I'm about to embark on this little Office automation excursion and I'm hoping a little bit of feedback here.
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Jan 8, 2010
Is it possible to have a Textbox on a form that when the user inputs data, ( during Runtime )that data remains in the Textbox for good and the Textbox then becomes read only ? Is it also possible to make it so that the CD with the programme on, is in the PC when the programme is being used. Perhaps writing the Textbox data back onto the CD ?
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Jan 3, 2011
i have this code which i am using to display data on fields on form.And if i read from the database and the reader has no rows the ballon tool tip should display from some time indication a message.The problem is anytime i select from the database and the if all reader doesn't have rows only the last message of the ballon shows.the rest doesnt.Please what have i done wrong
[Code]...
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Jul 13, 2009
I am developing an application on VB2008 with MySql as database. I opened the connection without any errors. I have three fields/columns in my database and on the form. When I am running vb form data is not reflecting on to form fields.
I have written the following code in form load event.
'Dim cn As ADODB.Connection
'Dim rs As New ADODB.Recordset
'cn = New ADODB.Connection
'cn.ConnectionString = "DRIVER={MySQL ODBC 3.51 Driver};" + "SERVER=localhost;" + "DATABASE=in_out;" + "UID=root;" + "PASSWORD=pacvision;" + "OPTION=3;"
'cn.Open()
'MessageBox.Show("Connection Opened Successfully")
'rs.Open("Select * from deptno", cn.ConnectionString, ADODB.CursorTypeEnum.adOpenKeyset, ADODB.LockTypeEnum.adLockOptimistic)
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Jun 20, 2011
CODE:
This tells me "End of Statement" is expected. I'm trying to instantiate a new form, and I'm trying to pass information into the form that I will use to populate other data fields on the form.
I've tried looking up constructors, but I can't find where my is different than other examples.
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Jan 4, 2011
I'm using: [URL]. I already have the listener up and running. For the 'client' I'd like to change it to a 'form' program with a text field so i can enter one line of text and then a send button. I know how to drag the field and button over to a form but I'm not sure how to tell the program to use them?
Imports System
Imports System.IO
Imports System.Net
Imports System.Net.Sockets
Imports System.Text
Imports Microsoft.VisualBasic
[Code] .....
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May 27, 2012
I'm trying to create a table in Word using data from a table in Access. There are four fields in the access table that I need. 3 fields are text which I can populate the Word without any issues. However the fourth field is a memo with >255 characters.I'm struggling to come up with the proper code to allow me to populate the Word field with the memo data that has more than 255 characters. The code I have so far is listed below. But when it hits the memo field, it crashes on the line I marked with **. I know it's not text, but I've tried many different field types, but nothing has worked so far.[code]...
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Feb 3, 2012
I have a date selector on mdi parent that updates a property when date is changed. When I open a child form, it grabs the property just fine. However if I change the date again after the child is open the date does not change on the child unless I close and reopen the form as expected. What would be the best way to automatically update all open child forms when the date is changed on the parent at anytime? running a timer to parse the date property is impractical.
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Mar 23, 2012
I create table using sql developer
create table tablenodes
(
nodeNo int ,
nodeName varchar2(50),
centerX int ,
centerY int,
][Code]...
I have a problem in updating statements, can't write it correctly, every time I try to edit it, gives me different error (ora-01036 illegal variable name/number, missing expression, invalid identifier).
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May 5, 2012
i want update .mdb file data using Textbox
Dim connStr As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=staffdata.mdb"
Dim sqlStr As String = "Select * from staff"[code]....
how can i update .mdb file data using Textbox,for example: when i click update button afterinput the password in TextBox1,the staff table will update my new password
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Oct 28, 2009
I am trying to write a program that is a statistical calculator. The way i have it set up is that you press the enter data button and it asks you how many numbers you want entered by inputbox then it proceeds to take the numbers one by one by inputbox. The problem i am having is that i dont know how to take these numbers and then have then printed in the "input" textbox.
Private Sub btnEnterData_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEnterData.Click
Dim N As Integer
[Code]......
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Mar 11, 2010
I am trying to write a program that is a statistical calculator. The way i have it set up is that you press the enter data button and it asks you how many numbers you want entered by inputbox then it proceeds to take the numbers one by one by inputbox. The problem i am having is that i dont know how to take these numbers and then have then printed in the "input" textbox. I have attached a pic of my program to give you some idea of what im talking about.
Dim N As Integer
Dim i As Integer
N = InputBox("How many numbers need entered:")
[Code]....
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Mar 15, 2012
I have a simple vb.net app and I'm trying to update a one row Access table with data from some textboxes. This is a learning exercise for me as I am coming back from not programming for almost 10 years, and know there are lots of other ways to manage this data, but I'm just trying to understand different aspects of ADO.net a little better.
The ERROR I'm trapping is:
"Syntax error in UPDATE Statement"
Any thought's as to what is going on? (See CODE and stuff below)
Here's the Scheme printed from ACCESS showing the exact spelling of the database table and column names:
Table: MaxTime Name Type Size
ID Long Integer 4
[Code].....
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Jan 29, 2010
I have a main form with datagridview containing a list of contacts:
VB
Public Class Form1
Private Db As New DataClasses1DataContext
Private Sub Form1_Load
[Code]....
After saving, I get the correct message ("Saved"), and the DataGridView in the first form gets updated in real time.
But... when I take look at the data (or close and reopen the forms) the data in the database (SQL server) have not changed! What happens!
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Apr 25, 2009
I'm at a complete loss here, its probably me being stupid and missing something simple but i don't appear to be able to update a testbox (CreditInfo) on Form1 from a module (SerialData). It doesn't give any errors, it just doesn't work. If i put a Button on Form1 to update the testbox(CreditInfo) it works... however i need it to be automatic.. Dave
[Code]...
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Apr 27, 2012
Alright, I currently have a listbox being populated with a variety of files.What I'd like to do is select a file, click the add button and populate the item name into that textbox.Then, select another item, click the add button and populate that items named into an empty textbox.I can get the first textbox to populate, but once I select the second item, I can't get empty textbox to display.
Here's my current code on how I'm populating the first textbox. The commented out section was for adding those items into another listbox, which worked but I need to specify a custom order, which I was I thought adding each item to a textbox.
[Code]...
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Mar 30, 2011
i have a login form that works ok. but i need to insert a textbox in it that has to be filled with the real username based on combobox selection. following the code for the login window. That code works OK.
Dim conn_login As SqlClient.SqlConnection
conn_login = New SqlClient.SqlConnection()
conn_login.ConnectionString = "Data Source=SQL;Initial Catalog=orcamento;Persist
[Codee].....
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Sep 24, 2010
I have an online database, and I have a program to insert information into database and to login using the information in the database, now I am wondering how to take something from a database and display it in a label, lets say if I log in with my username and password I want it to display my e-mail address from the database in a label, this is the code that I have for the register:
Imports MySql.Data.MySqlClient
Imports System.Data.SqlClient
Public Class Form2
[code]....
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Aug 8, 2009
I would like to draw a figure like this. But i do not know how to start drawing it. What i could do is simple mathematics calculation, display something in a label and taking some values from a textbox.
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Dec 15, 2009
I need to make a simple program that takes info that was inputed into the textbox and when a button is pressed it populates an excel template and printse code I'm a little confused on where to start or how to get this accomplished.
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Nov 20, 2009
I need update the text of a textbox when I do click on a button on a user control.
How I can do that?
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Nov 19, 2009
I need update the text of a textbox when I do click on a button on a user control.
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