Increment Values In A Database Column?
Feb 24, 2009code to auto generate and increament values in a database column?
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Database Sql Server Compact Edition 2005 - Save In A Database - Column Cannot Contain Null Values
Oct 15, 2009Ive created one database Sql Server Compact Edition 2005, with one table ("Cliente") I know that I can created my database good, but i have a problem saving information since three textbox, in my table(With columns "Nombre" "Apellido" "Cliente". In my form there is a button save ("Guardar"). When I do click in my button appear the next message : "The column cannot contain null values. [ Column name = Nombre,Table name = Cliente ] " and happen the same with apellido and Id_Cliente. And this happen becouse my code cant save the information....
This is the code
Option Explicit On
Option Strict On
Imports System
Imports System.IO
Imports System.Data
[CODE]...
And the code for my button is:
Private Sub cmdguardar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdguardar.Click
Dim myconnection As SqlCeConnection
Dim mycommand As SqlCeCommand
[CODE]...
Auto-increment Column's In SQL And VB?
Apr 24, 2011I have constructed my database and I have used auto increment the ID's of each column. When I was testing and inserting data into my tables the auto increment of these column's of course incremented.
Now I am looking to start each individual Id column at 1 and not at the number where it is now.
I know it has something to do with using max value and +1. I have deleted the entire table and have tried everything to re-insert my data and start the ID's at 1, but I have had no luck.
Also to,
I know within Vb I can use a datagrid view and add there and it starts at the max value of the column +1, but when I have another form to add data within columns the column number is not in numerical order, How do include code within that seperate form to auto increment ID column numerically?
How To Increment A Column In Access
Nov 8, 2011I have a column in access table with numbers ranging 1-11.What I want to do here, is for the subsequent row to be +1.
View 1 RepliesEnter The Duplicate Values.In The Database One Of The Column Is Indexed?
Feb 4, 2011I am sending values from Combobox and Textbox to Access Database in VB.NET.I am phasing the problem when i enter the Duplicate values.In the database one of the column is Indexed.(Yes Duplicates not allow)That column i bind to Textbox("txtperson1").I used the TRY and Catche method to solve the Indexed Problem.when i run the application the value which i enter is not a duplicate that value save on the db. Once i enter the Duplicate value , the message box is showing "The Record alread saved".But After i enter the new value the same message is displaying, it is not saving on the db.
[Code]...
Save GridView Column Values And Retrieve Them Without Using A Database?
Apr 30, 2010I would like to save Gridview with all of the columns value and reload the same grid without using database?
View 3 RepliesInsert And Retreive Values From Database In Datagridview Combobox Column
Jun 18, 2009I m filling values in DataGridView using following code [code]Can anybody help me to insert and retreive values from database in datagridview combobox column.
View 1 Replies2003 : Manually Increment A Data Column?
May 14, 2009What i am doing is trying to manually increment a data column with a range of my choice. Say i have a range from 1 - 10. Now with my update query i want to update a column with 1,2,3,4,5,6,7,8,9,10 UPDATE TABLE SET Type = [min_range] to [max_range] WHERE Po = 'A' AND Loc = 'F'; WHERE Po = 'A' AND Loc = 'F' will return 10 records but i want type to be 1 - 10 for those records couple of days trying to get this work and i am using VB 2008 .NET.
View 1 RepliesCalculate A Column Values Based On Other Column Values In Datagridview?
Jun 3, 2011am trying to calculate the values in rows in column 6 based on values of column 5. Bellow is the the code I am using I get a run time error about the string not formatted properly
[Code]...
IDE :: Datagridview Performance Slow Increment And Decrement In Column?
Dec 18, 2009i have a datagridview which have 3 columns, two button columns increase or decrease, 3rd displays the value increased or decreased from button. i have datagridview_CellContentClik behind button columns. The problem is increase in value on pressing button is very slow. i mean if i press button quickly the value should increase quickly but its the same slow pace for increasing or decreasing value on pressing button.
View 2 RepliesAuto Increment Values Always Negative In GridView
Mar 22, 2011I am trying to make a sample Master-Detail relation ship database example in vb.net. When I add MasterTable a new row via bindingnavigator and save via savebutton autoincrement field goes -1 -2... negative values hence cannot get correct ID numbes saved in table rows till I close open sample application. How can I see correct autoincrement ID numbers in gridview after savebutton ?.Just ID numbers saved to mdb.but cannot see them i gridview and displaying negative weird numbers. This problem is important because without getting ID numbers cannot bind Detail table rows to newly recorded master table rows.
View 3 RepliesIncrement Date With A Value From A Database?
Jun 8, 2011How would I increment Date with a value from a database.
Example: Date + Database Field value (random values)
(08/01/2011 + 5 = 08/06/2011)
Auto-increment To An Existing Database
Feb 15, 2012i am using vb.net2010 and mssql as my database. what i want to do is when i open the form, the database will auto increment the student id and show it on the text box.
View 13 RepliesDatabase Table With Negative Increment?
Jan 11, 2011Why when I add new item in my database table it will show negative increment?
how can i change it to positive increment or use only integer increment.
Cant Able To Find The Code For Increment The No:of Vote In The Database?
Jun 4, 2011i am developing a voting software, but i cant able to find the code for increment the no:of vote in the database when an user click on the button.I used sql server 2005 as my back end..
View 5 RepliesIncrement The Count In Database While Click On The Button In .net?
Nov 4, 2010How can I increment the count in database while click on the button in vb.net??
View 3 RepliesAdding A Column And Values To It On The Basis Of Some Existing Colum Values?
Jan 4, 2011i have retrived this datatable from datasource and i want to add a more colum 'category'basedon the each value of each Role, like if role column has the value '90 daya client' then in the same row it should have a value 'DC' in the category column.n make a temporatry dt1 table but to add related values.
S.No First Name Last Name Role Date
1 Us er1Name User1Name 90 Day Client 11/01/2011
2 User1NameAtt1 User1NameAtt1 90 Day Client 11/01/2011
[code].....
Increment A Primary Key That Is An IntDigit When Adding A New Record To A Database?
Mar 16, 2012How do I increment a primary key that is in integer digit format to a record when adding or pressing an "Add New" button that I have on my form. In other words, I have a 'Add New' Button that has the code following:
[code]...
As you can see from the above code, that most of the textboxes are cleared so that a enduser can insert his or her values and information. Currently, I do have the OrderNumber which is the primary key cleared, however, I would rather have this field auto incremented to the next digit. For some reason, at the moment, I just do not know where to begin to set this field so that a digit canbe inserted and incremented rather than cleared.
Use Post Increment And Pre Increment Operators
Mar 17, 2008Do we have increment operators in VB.Net? I want to use post increment and Pre increment operators in VB.Net.I want touse the statement like, i++ and ++i.
View 5 RepliesCompare Values In Datagridview With Values In Database Before Inserting Into Database
Dec 15, 2010I am building VB.NET application that takes data from text files that are exported from a legacy DOS program. These are written to a datatable and displayed in a datagridview. Right now my code simply loops through the datagridview and inserts the data into the database (SQL Server). There is a requirement now that the client number must be checked before the insert to see if it exists in the database. If it does, then the value of one field (tax rate) is checked against the value of the field in the datagridview. If there is a difference, then the rate is to be updated in the database and the data that was in the database is to be written to a history table for audit purposes. If the client number is not there, then we are to do the insert (which is already written). I want to know what is the most elegant and efficient solution for this problem.
I need to compare what is in the database table with what is in the datagridview, update the history table for records that exist, and then insert new records.
Adding Column Values Of A Certain Column
May 28, 2010I want to add all the values of a certain column. I already get the value of an exact cell value but when i add the loop code for it to continue,it doesn't performs well.
[code...]
I,m using vb6 po with datagrid component.
Xml - Mix Values From Local Data With Values Returned From Database While Using LINQ To SQL?
Oct 27, 2010I am creating an xml file with LINQ as follows...
Public Sub CreateXml()
Dim db As New MDataContext
Dim Customers = <gallery columns="3" rows="3">
[code]....
Could i mix local values with the ones returned from the LINQ query...Something like the following?
Public Sub CreateXml(ByVal **Col** As String, ByVal **Row** As String)
Dim db As New MDataContext
Dim Customers = <gallery columns="& **Col** &" rows="& **Row** &">
[code]...
Add Values To A Column In DGV?
Nov 30, 2011I have a datagridview, I am importing csv into it, I want to add a new column "Test Column" and populate that column with row numbers [code]...
View 3 RepliesGetting ALL Values From A Column?
Jun 10, 2011I am able to connect to my MySql Database.How can I list all of the values from a column.I would like to list all of my "Username" column's value.[CODE]....
What is the sql query for it? So far I only know SELECT and INSERT. And then listing all of the values to the Items in my ComboBox.
Passing Data From Database And Increment Data?
Mar 15, 2012I have 2 question to ask about vb.net. Now i'm using Visual Studio 2005 with connection MySql...
1. how if I want to passing the data from database to the textbox by SEARCH button. I Have 1 SEARCH button and 3 textbox [txtname],[txtage],[txtaddress] and to pass it also on datagrid...
2. I have a id_Student starting with S001 in database...and I want the id is increment when new data is added. The id_Student is display using lblID_stud
Add Column To Table With Values?
Oct 5, 2011I have a table called Table1 which already has a few other columns and 4 rows. I want to add three new columns to it. When the columns are added I want all the cells in the column to equal the variable I supply in the Add method. When I add the column named "BatchID" it works beautifully, but when I add "UserID" it gives an error "Cannot find column [iqz9]". Why? This is how Table1 should look like:
[code]...
Add Values In A Column Of A Datagridview?
Jun 2, 2011i want to dynamically add the values in the column of a datagridview the row of which is also being created dynamically...
Form1.TextBox10.Text = total
con.Open()
cmd = New SqlClient.SqlCommand("select product,Quantity,MRP,Sale_Rate,Disc_Amt,Amt from sale_table ", con)
[Code].....
Add Values That Are In A Datagrid Column?
Mar 17, 2010I have a database and a dataset as the image shows in the link, how would i add the values of the colums "amount1" and "amount2" for every row and entry as the user make entries to be automatically displayed in the "total" column. Meaning that every time values are entered in those amount columns, they will be added and the total displayed in the "Total" column.
[URL]
Change The Values Of Last Column?
Aug 10, 2010I have a GridView and by RowDataBound event I change the values of my last column. I want my last column to have as values the sum of each row.
Below is my code
If e.Row.RowType = DataControlRowType.DataRow Then
'total of row
Dim i As Integer
Dim total As Integer = 0
Dim dt As DataTable
[Code]....
Column Does Not Allow Null Values
Jul 30, 2009I have a databound DataGridView and use a button to control updates.
The problem is that if a db Column does not allow a null value an error is thrown ("Column <ID> does not allow null values") and then the datagridview automatically removes the row. This error is raised as soon as the user leaves the cell and before the update command is issued.