i want to check the first record in the database and do updation. similarly i would like to check all the records one by one and do updation. iam using the sql database. In my vb.net applcn i have two tables "FATRAN " and "GLDetails".
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My application is like this : i have to search my data from database with some check box and text box when user select check box specific function go on and then when user enters some range of value in textbox then the result will shown in data grid view after that i can print it by selecting data
my vb.net code is as follow:
Imports System.Data
Imports System.Data.SqlClient
Public Class XtraForm1
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I m also pasting the demo picture.
how to check data if it is already in the database?
View 8 Replieshow to check the data is already exist in database using vb 6.0Naren
View 1 RepliesChecking data for login form with oracle xe database
View 1 Repliesi am using vb.net with asp.nethow am i going to check that this class has 10 people already if i continue adding the 11 one it should prompt me that the class is full once i click save button, i know is something like validating but not sure howi can first add a few student to class 2A and later on continue with adding to another class however, when i return to add more student into 2A and save, it should help to check like what i mention above i have this table call listOfStudent
listID class student registerNo
1 2A A 123
2 2A B 456
3 2B C 789
i have a aspx web page, i have a drop down list where i select the class
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when enter finish the first row of student data, user can click on the addNewRowButton to add a second row of student data and so on, then after all is done when the user click saveAllStudentDatabutton, it should check whether this class i selected from drop down list has already has 10 student if it does it prompt if it don't it will add in
This is my problem.I have a field set up in MS Access to Boolean YES/NO, this field is populated when the user check a checkbox on a windows form. If the user check a checkbox, the value is written as checked in the data field (MS Access).The problem is when I search for the user information, I need the information from the Data base to populate(return) to the windows form. Example: If I enter a users phone number and the user data is present, the form gets populated with the information the user previously entered which was store in the database.Example: If the user selected checkbox1 and submits the form. When I search for the user info, the check box should check(populate) because the user had checked it on submit.Here is what I have done:
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I am getting the check value correctly in the database using a Boolean.Here is one of the errors I am getting. Unable to cast object of type
'System.Boolean' to type 'System.Windows.Forms.CheckBox.I am having trouble putting the codes in a code tag or block
Details: I want to compare these above two table1 and 2 . The unmatched records should be save in a new table .
objectives
1 Should take input the table and fields we want to match each other.
2 Then after searching or reading the record from table and selected fields save the unmatch records in a new table
hi there,first of i know nothing at all and my goal is to make a app for xp to check a database and check/patch a iso and then to burn the result to dvd-dl, basically like a app called abgx360 checks the database then like xbox backup creator burns the game, i'd like to make a app to do both, i'm going to college next year in september to learn programing c+ andf a few other things, but thats a longtime away.
View 14 RepliesI have a Boolean that writes to a data field. The data field(column) is set to YES/NO, if the user check a checkbox, the value is written as check in the data field.The problem is when I search for the user information, I need to get to form to the state it was in when the user submitted it.
Example: If the use select checkbox1 and submits the form. When I search the form, I need to make that particular check box check.
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I got a system which i want to insert, delete, update the data into my database and the data from database will be display using datagrid. The below is the coding for one of my button, delete.
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
Try
btnSearchEmpNo.Enabled = False[code].....
Now I wanna set when user click on this button to delete a employee (for example) then the datagrid that i have in my application will not show the data of the deleted employee but in the background, the employee haven't been deleted from database.The employee only will be deleted from database when the user click on SAVE button.I know this application have to use RowState but how?
What I want to happen is that the button from my system will remove the previous data from database and then insert new data to database from text file. Im done with inserting new data. The thing is that I dont how to control or where to put the Delete Command from my code.
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I have a program for school project that has input fields for Name, Address, City, State and Zip. I need to error check so that the fields are not empty.I have used If statements that check to see if the fields are empty and shows a message box if they are but if I leave the whole form empty and click the button that activates it, all the if statements go- one by one instead of pausing for the user to input the required data.How do I check for data and make the program stay there until the data is input? I have tried TRY/CATCH but it won't catch this type of error.
this is the
'This program computes customer's bills at the pizza shop for all combinations of
'crusts, toppings, sizes and discounts
Option Strict On
Public Class PizzaForm
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I tried this code to check if the data in textbox1 not equal to any data in column name, so insert the data that in the textboxes to the table1. Esle.. do another thing. But it didn't success with me.
Code:
Dim conn As New OleDbConnection()
conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" _
& "Data Source =" & Application.StartupPath & "DataBaseName.mdb "
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I want a Code to check Database exist in SQL and Message Box Show Database Exist Yes/NO?
View 1 Repliesi have publish data on data grid(in vb express 2010) and want to check for the data in each an every row. there are few columns and i want to check the string "OK" under "Status" column. if there is any "Not ok" found then need to prompt a message describing the details of whole row under.
View 4 Repliesi have a string (the letters will never be in the same order):
TFTADFDAAFDADADDAFFDTFFTDFTFTDTTAFDAFADTAAATFDTADAFFTFTDDFDAFFTAT
1) i know it is always going to 65 characters (no numbers)
2) it will only have the letters ADFT
i want to loop through each row of data and check if the data contains this.
System.Text.RegularExpressions.Regex.IsMatch()
I am trying to check a record in database before inerting a new record here is my code but problem is when i enter a names first alphabet it imediatly populate massage i want to check it after entering whole name
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Try
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how to check if a field( a cell within a database for talk sake date of birth) has been edited in the past then flag it now this field may not be change for a year but how do i keep a record of that and the flag it if it is change.
View 1 RepliesI want to check if database is created or not whne using the below SQL command
CREATE DATABASE IF NOT EXISTS 'DatabaseName'
from the below link i could able to get if database exists or not. and i tried the same way to catch the result od SQL command. but i could not. correct me if i wrong. below is my code. Having a form with 2 text boxes (txt_host,txt_db) and a button Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
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I have this code that Deletes a record by its IP address inputted by the user. How do you check if that record is available? how do evaluate first that the IP address inputted is not in the database before deleting anything? in vb 6.0 I used to do this line[code]...
View 2 RepliesI have this code that Deletes a record by its IP address inputted by the user. How do you check if that record is available? how do evaluate first that the IP address inputted is not in the database before deleting anything? in vb 6.0 I used to do this line:
If rs.EOF And rs.BOF Then
but it doesn't work anymore in vb 2008
If TextBox1.Text = "" Then
MsgBox("Input IP Address", MsgBoxStyle.OkOnly, Title:="")
Else
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I made program which connects sql database via WiFi network. I have timer wich every 10 minutes updates textbox information from database. If Network connection will be lose, i do not whant to get any error and after that lose data wich is in textbox, until sql database connection will not be. How can i check if connection exists and after that update data from database? Something like that:
Conn = New SqlConnection(ConnectionString)
Conn.Open() ' if connection is lost there gets error
If Conn.State = ConnectionState.Open Then ' But this does not works
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How can i write logic to check is it my sql statement being insert into my database ? is there any ways to create or thing can check thru by using webservice?
View 13 RepliesWorking in a VB.Net 3.5 WinForms application, and using Access 2003 (JET 4.0) as a database backend through ADO.Net.
I'd like to check the database for changes, before the application decides to refresh the data from the server. Are there any best practices for this, or should I trust the ADO.Net environment to optimise/handle this?
I was thinking of using a limited log on the server, which gets updated by every change. Pulling this log could tell whether or not a certain table has changed data.
Is it possible to check to see if the text in a textbox is present in a table/database and then display the corresponding data.
View 2 RepliesI have an interesting problem. I need to write a program that checks to see if data has been inserted or updated into a Microsoft access database . The program needs to be compatible with both types of access database, so using triggers is not possible as it wont work in access etc
View 3 RepliesI have a database created and tables inserted into it. One of the tables is called UserLogin. It consists of two columns, BarcodeId and Technician. I have a barcode value, and what I am trying to do is check if any of the values in the BarcodeId column of this table is equal to the barcode that I have. Then when I get a match, I want to get the Technician that matches that BarcodeId and display the Technician in a text box.
I was using this code sample:
Private Sub HasRows(ByVal connection As SqlCeConnection)
Using connection
Dim command As SqlCeCommand = New SqlCeCommand( _
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I'm not sure if I am on the rught track or not, when the code gets to the line connection.Open during debugging, nothing seems to happen.
Is there a faster/easier and more efficient way of checking if an entry exists in SQL then this:
Private Function CustomerCheck()
Dim connString As String = ("Data Source=.SQLEXPRESS;Initial Catalog=BFS;Integrated Security=True;Pooling=True;")
Dim cmdText As String = "(SELECT * FROM Customer WHERE Customer=" + CustomerTextBox.Text.ToString + ")"[code]......
what is the fastest way to check if Item ID exist in the database?
From what i have done, i have an excel file uploaded to datagridview, then each itemID is retrieved line by line, then accessed the database to check if ItemID exists.
Is there a way to retrieve the whole column of itemID and then query it to MSSQL2000, then display the itemIDs that does not exist.