VB 2008 Numeric Field Binding To MS Access?
Dec 15, 2009
I am having a problem with something seemingly basic and typical. However, I have tried and searched for many hours, I could not find a solution. I am using Visual Basic in Visual Studio 2008. I tried to bind a textbox to a numeric field in an MS Access table. When I enter an number to the textbox, sometimes it would be converted to another number when I tab out of the textbox. For example, if I type '123456.78', it would be automatically changed to '123456.781', '123456789' would be changed to '123456792'. The wrong numbers are stored in the database too. For smaller number, it seems to be OK. For example, '1234.56' is O
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Nov 1, 2011
How to Aggregate field's numeric value..? in visual basic 2010.i am created a form with a datagridview and a textbox .datagridview binding with a table. in visual basic 2010 and SQL Server 2008R2
table fields and datagridview columns are like below
[Code]...
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Feb 9, 2010
how can i total numeric field in datagridview
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Nov 23, 2009
I have a field in a sql table that is of datatype numeric(9,0).I have a time field on my input screen that is type textbox.I want to insert the time (which is type text) into the numeric field of my table. Do I need to parse this data somehow? Or will it just work as a text field? How would I do that?
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Feb 25, 2011
I have a textbox that acts as a password field. It is supposed to contain a value at least 8 characters long and not greater than 12 characters in length. I need to construct an if statement that checks to see if there is at least 1 numeric character in the string and at least one letter in the string.
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Dec 27, 2011
I have two dbf tables and must compare them by column (field) types. For example:
Table1: Id (Numeric) | Name (Character) | Salary (Numeric)
Table2: Id (Numeric) | Name (Character) | Salary (Float)
With these two tables program should display message like (types do not match in field SALARY [F <> N]) where F is float and N is numeric.
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May 17, 2012
Why when I try to save a null value from textbox at sql server 0 is saved?
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May 11, 2009
Dense student here with little sleep here during finals week...I have a text field being read on a button click event (along with lots of other information being read). This field needs to have a number entered.
I either:
1) Force a default value (i.e. - "2")
2) Verify there's something in the field AND that something is numeric...
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Aug 13, 2011
I want to add a blank value to a field in access database with vb 2008 command.
Problem 1: Here is my code, it shows conversion to string not possible errors
Private Sub btnRedThrow_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRedThrow.Click
Dim dbCnct As New DBUtills
[Code]....
notice the fifth and last value is empty. But it is not being added into the database, how do I do that?
Problem 2: Why does an additional field from my access database disappear even after I manually created the field?? (access database 2003 version, extension is .mdb) I'm using visual studio 2008
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Mar 25, 2011
How to add values from field ( Access 2007 ) to a combobox in visual basic 2008?
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Oct 7, 2009
I have a textbox pulling an 'entryDate' field from my table using databinding. The field in the database is set to a 'Short Date', however when I bind that field to a text box and run the app it appends "12:00 AM" to the short date from the Db.
How do I get my databound textbox to simply display the short date which exists in the table?
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Feb 7, 2010
with .net 2008 exp + MySQL 5.0
my code is like this;
Dr_cug.Read()
cug = (Dr_cug.Item(0).ToString)
Dr_cug.Close()
error msg is; Invalid attempt to access a field before calling Read()
i have called the read here what's going wrong please
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May 3, 2009
I am using bindingsource.find to quirie information, its working so nice but I have a problem when the bindingsource cannot find the information I want it to show me the information that is inside the field, even knowing that the information that am looking for is not there:
I have something like this:
dim findinformatio as string
inputbox=(type the name)
dim findme as intenger=me.bindingsource.find("LastName", FindName)
me.bindingsource.position=findme
if bindingsource.position=findme then
msgbox(Findname)
else
msgbox(me.bindingsource.find("LastName", findName)
I am doing it because if the information that am looking for is not in the record field. I want the bindingsource show me the information that is inside the recordset field(LastName). I used to do it with odbc and works fine but with bindingsource I cannot, Why? And I have a compact database, sdf. I loaded the tables on my project.
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Sep 16, 2011
I'm a VB.NET newbie, and i'm currently building a .NET application.
[Code]...
How do i achieve the same in VB.NET (VS2010) in data binding mode?
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Oct 29, 2011
is there any way that i could link/bind multiple binding source to only one binding source navigator?
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May 9, 2012
I am not being able to retrieve from my access database in vb. Here is my code that points to the problem:
[Code]...
The problem I have here seems to me that the comparison between is crop_year =? where ? is the placeholder for Convert.ToInt32(cyrNote.SelectedItem.Trim) which is a value i get from a combobox cyrNote and try to convert it to an integer using Convert.ToInt32() so that it can be compared with the database value crop_year which is defined as integer in the database.
The problem here though is that the select returns null. I tried to replace the placeholder ? with a known value like "2011" and it returned a value. This means to me that my comparison crop_year=Convert.ToInt32(cyrNote.SelectedItem.Trim) is negative yet I expect something positive. I've tried to google on how to convert to integer and that is the best I could get.
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Apr 6, 2012
Is there a numeric text box, not an up-down box, a SIMPLE numeric box into which the user can place a number, 5 boxes actually, then on command have the five boxes added and the sum displayed?
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Aug 9, 2009
I am using a toolstrip binding navigator to access files and it works fine. I want to reset the navigator to the first file on a seperate button . Is there a simple way to duplicate the action of the toolstrip button "BindingNavigatorMoveFirstItem" when using another button?
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Jun 4, 2011
I can save my data to access database and in the access database field I set it to date/time.But problem is when I get the value out from the database.. the format is always month/day/year hour:minutes:seconds example today: 5/2/2011 12:00:00..How to get the value into listview becoming May/2/2011 without the hour..Here's my code to get it from database ListView1.Items(i).SubItems.Add(dt.Rows(i)(14).ToString).The second problem is.When I would like to edit, how can the datetimepicker get the listview value ? [code] info: using access 2003 (.mdb) the Date of Birth field has been set into Date/Time.
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Mar 9, 2010
[Code]...
But I have checked it....it is correct.
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Jan 12, 2009
the Numeric Pad + key is used for tabbing through fields. Is there a simple way I can make this happen. I have tried it with a keyboard (Iwork off of a laptop) and it did work.
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Sep 19, 2009
Re DataGridView Sorry don't really have any code - just a whole project. Basically I changed the underlying Access (accdb) Table by adding a new field, The new field shows up in the DataSources section of the Solution Explorer and in the "Edit DataSet with wizard" page but when I attach the binding source to a datagrid view, the new field is not there. I also created a new bindingsource but still not there.I just noticed I've another table where I changed the names to something more meaningful, and the old names are still there and the data for those fields doesn't display in the DataGridView
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Mar 30, 2011
I download a file into access. One field contains one to many numbers always separated by a colon and a space: I have no control over the download. TheNumbers have a 1 to many relationship to a customer. Each number must then be verified against two separate reference files, and if the numbers match the description related to the number will be displayed.I'm just learning visual basic. I've made the changes manually (yuk-this took forever); I've tried various string/conversion commands; I've taken the data and placed it into excel and tried to manipulate it, without success.In this case is always numeric. In another field, similar problem, it's a combination of text and numbers.
Example: Cust# TheNumbers
99 1234; 12345678; 123123; etc...
88 87654321, 345654, 98989898. etc..
The numbers can vary in length and quantity. For each customer each number must be loaded into one field.
Example outcome:
Cust# TheNumber
99 1234
99 12345678
[code]....
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Aug 15, 2011
I am trying to get the Sum values of a Column and want to check if entered value in Textbox is valid. Here is my code below
[Code]...
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Jul 9, 2009
i have a table name product , when i m inserting data into product i need to first check if Product Name already exist in database if yes i want to exit. basically i want to know how to get data from the database and how to access columns in asp.net .
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Jun 2, 2011
How to get access Field name and type in VB.net Listview?
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Jun 1, 2012
I am new in VB.net. I would like to display picture in Attachement fields in Access table ina Window form with VB.net.I created a Window form using Visual Studio ( sorry, I am new in Visual Studio too and set the Access table as the data source.
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Sep 1, 2008
I have a query which I test and work fine in Access[code]...
When I try it, it comes up with an error: "Undefined function 'Nz' in expression.
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Jan 8, 2010
I need to create a field in my database access throught code... I had this code in VB6 to do the job,but i'm a little confused with the way to do this in VS2008.Off course I know the way to open the database,but the way for create the field I don't know!
Dim tdf As TableDef, fld As Field, Top As TableDef
Dim nCtr As Integer
Dim bFound As Boolean
[Code]....
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Mar 22, 2011
I'm using VB2005 and I got a message error in a runtime: Abstract does not belong to table tblBooks. I don't think that the problem is its datatype. I'm currently using MEMO datatype because I need to load it more than the capacity of string. Is it possible to use this code in order to accomplish it? txtAbstractInfo.Text = MyTable.Tables(0).Rows(Counter)("Abstract").ToString
txtAbstractInfo is the name of my textbox and my field's name is Abstract.
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