DB/Reporting :: Data Conversion Error When Showing Dates In A DataGrid View
Dec 26, 2008
I am using Visual Basic 2008, and SQL Server 2005. I have a single-user client-server app (i know that sounds stupid, but its for future expandibility and also the fact that documentation was easier to find for SQL server than Access files).The app is basically a medicals records system.
In one of the tables, called 'visits', it stores the dates on which each patient visits the doctor, among other things like symptoms and diagnosis. Another table stores all the patient names and IDs along with other details, and a relation has been set up between the patient ID in the patients table and the visits table. So i dragged the visits table from within the patients table (to get only the visits for that particular patient), and dragged it onto the form to make a datagridview. However, the datagridview didn't seem to recognise MS SQL server's smalldatetime format, and tried representing it as a picture. When i changed the format of the column to text boxes, it gave me a type mismatch error (Inconvertible type mismatch between SourceColumn 'VisitDate' of DateTime and the DataColumn 'VisitDate' of Byte[].) That means, for some reason, it is trying to convert the smalldatetime data to byte before it shows it, which is leading to the error. How do i fix this?
Also, I remember seeing some option for using completely custom column types in the datagridview, but i cant seem to find it now. The options in 'Edit Columns' are very limited, but i would like to set it to a masked text box, or something with a fixed format. Can someone recommend a good column type for representing dates, and how to make the datagridview show that kinda column?
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Feb 23, 2011
I'm working in VS 2008, vb.net. I have a data grid that is getting filled based on a store procedure. When I preview the datagrid, I will get 29 rows back. This includes rows that have NULL values in it. And that's what I need. But when I run the program, it will only return in the Datagrid 12 rows, the rows that don'r have any NULL values. Where or how can I change it so the DataGrid will show NULL values?
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Mar 3, 2009
Comparing dates in datagrid view
[Code]....
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Apr 15, 2008
What I am trying to do basically is open an access query in a datagrid view and then be able to make changes to the datagrid and then save it back to the database.When I try to save:
Me.BindingSource.EndEdit()
Me.TableAdapter.Update(DataSet)
It says that update is not a member of the tableadapter... Why is that?
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Apr 10, 2010
I am a new one to vb 2005 and I have no idea to get the datagrid filter view option.I developed a new program which have an datagrid view.I want to filter the data based on the 3 thingsthe first one is the "dates between start and end with 2 datetimepicker controlhe Second one is 2 of the filter combo boxes.For ex: it should filter the data between the two datetimepicker
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Aug 21, 2009
i have an database and i have a table there name ad "product_order" i have created a form like attached picture..i want o view all of items in datagrid view where customer_id ( a column of database table) = label value of your id and when i will click to view this form this form will load automatically..
Public Class Form8
Private Sub Form8_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
[code]....
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Sep 25, 2011
I use visual basic 2010 professional edition. I am working on a project on it with access on the backhand. i want to view the data in datagrid control for the stock management. I also want to setup a query in the query builder which will search the database according to the ID but i cant get it right i dont know why. i type in the form filter this: LIKE @ID + '%'. But when i click somewhere else, an error appears which says: Data type error in expression.
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Nov 9, 2010
I am building an application that has several forms to it and on my first form, I declare 2 variables that I will need to pass to at least 2 of the other forms. I call them
Public payPeriodStartDate, payPeriodEndDate As Date
on form2, I am needing to pass those variables to a datagridview to present to users. I have the following query that I'm trying to run from that form but I'm given an error that SQL is unable to parse the query:
Code:
SELECT Employeenumber, Exceptiondate, Starttime, Endtime, Duration, Code, Approvedby
FROM Exceptions
where [Exceptions].exceptiondate between '" & payperiodStartDate & "' and '" & payPeriodEndDate"
The datagrid is bound to the form and I'm using SQL 2000.
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Sep 8, 2011
i was wondering if there are other ways of showing data coming from the database.currently [ as per in my previous thread] i am using a [bind] datagridview.e.gthe table has
id, name, quantity
im thinking that listbox could be one, but it just shows 1 [e.g name].
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Apr 9, 2009
I created a form with a datagrid to show data stored in an Access database. It shows the data correctly, using the code:
[code]...
("compras" is the table name and "Comprasver" is the dataset name).The form also has 3 textboxes and 1 DateTimePicker.Then I created a sql query to allow the user to search within 4 fields of the table (field1, field2 and field4 get the data in the textboxes and field3 gets it in the DateTimePicker). The query looks like this: SELECT field1, field2, field3, field4, field5 FROM compras where field1 like "%"+?+"%" and field2 like "%"+?+"%" and field3 like "%"+?+"%" and field5 like "%"+?+"%" field4 is not an important search criteria, so I didn't include it in the query. Field1 and field2 are both string type. Field3 is a Date type and field4 is integer.Once I made the query, it automatically added a toolstrip with a code, which I cut and pasted in my "Search" button "click" event. The code looks like this:
[code]...
But every time I try to search, no matter which criterias I fill in (even if I fill in none of them), I get an error message saying something like the conversion of the "" string into Integer is not valid (my Visual Studio version is in Spanish, so I don't know how to exactly translate the error message).It's supposed to let the user fill in one, more or all search criterias (all 4 search fields).I found out that if I delete from the query the two fields that don't have String type data, it works correctly. What should I do in order to be able to use the Date and Integer type fields as search criterias too?
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Jul 24, 2009
I have a database and I was thinking about using either a List Box or Data Grid to show the data. Is there is another way of showing the data? Also, when the user 'double-clicks' on the data in the List Box or Data Grid then I would like the information to come up in a new form. I know how to show a new form but I don't know how to get the information from the one that has been clicked.
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Jan 8, 2011
Masters of the visual basic arts, I, a lowly noob, would just like to ask for your wisdom (and mercy). For my program needs to determine if the data grid view has any content because if that certain datagridview doesn't contain anything, then I would disable a couple of functions for the program.
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Jan 27, 2012
i want to send my datagridview data in mail from vb.net application any idea how to do it ?
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Mar 10, 2011
there is another problem in my system.... after publishing my project, i find that my data in datagrid view is not updated as in the ms access database i wonder why.... here i gave my coding
Private Sub Form6_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.REKOD_PELAJARTableAdapter.Fill(Me.LcrsdDataSet4.REKOD_PELAJAR)
[Code].....
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May 19, 2008
See our Posting Guidelines for our policy on archived threads.I am confused as to where to place the following code snippet in my code. I put the function above my load event and the same exception still occurs:
An unhandled exception of type 'System.Data.OleDb.OleDbException' occurred in system.data.dll
[code].....
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Mar 4, 2009
i have a datagridview that is pulling information from a access database. The tables being queried is called "History" I can pull data and update data with no problem, however if i edit the date field i get the following error "Syntax error in UPDATE statement" my code is below.pulling from access
[Code]...
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Aug 7, 2010
I have a datagridview control that will be used to allow the user to input records. The control uses a combobox column to select a type of service. There is a rate associated with the type of service that I then want to display in the grid. The user then enters a quantity and the last column mulitplies the rate and quantity to get a total. I have the combobox , quantity and total columns figured out but I don't know how to get the rate column to automatically be selected when the type of service is selected. Below is the code.... sets up the datagridview
Dim dv As New DataView(LookupManager.Lookups.LookupServiceType)
Dim Column1 As New DataGridViewComboBoxColumn
With Column1
[code].....
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Apr 8, 2011
want to know how can i click the data in my datagrid view and then pass the data to the textbox.. also i want to make my datagrid view not editablemy auto increment field has a 7 data (for example 1-7)now when i delete the no ata the actual data is delete
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Nov 30, 2010
i have a query as i am using a data griid view which has 7 colums one off these colums is a combobox"item"
for the list of items in this combobox i want to pick from a database table
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Jan 15, 2012
in my first form i have a datagrid havng access 2003 as db. on my second form i have textboxes.
now what i need to do is when i clicked a specific row of my datagrid the second form will pop out and display the data on its textboxes, there it can be edited.
so far i have this code. i got this from my search on net[code...]
this code display the employee id of the clicked datagrid row on my textbox on the same form. now i need to place my textbox to another form.
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Aug 5, 2010
i've made a small tool that searches an access DB in back end & dumps the results in a Datagridview, now i want to export those results to excel, after googling i found a code that does it for me , it's working partially for me. It writes the Headers to a new excel file but then for some reason i getting below error (on the blue line in code):
[Code]...
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Oct 25, 2008
I have an application which opens one of several excel templates, fills a datagrid view with Excel Named Range data. Once the data is modified in the application I neet to save it to an excel spreadsheet. I currently have the following working:1. This sub writes 2 columns of data (Ingredient) and (Result) from those named ranges and places them in the datagrid
Private Sub CboBoxTypeCofA_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CboBoxTypeCofA.SelectedIndexChangedWorkbookTemplate = ""CofABook = ""
[Code]....
This code works and the only problem is that after running the code the excel application does not close.Now I need to write the completed updates from the datagrid view and the other controls back into a workbook.Ive been searching around but have not found the proper way to do this and how to kill the oexcel application in the code above.
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Jun 10, 2011
I have two forms and I am running a sql query to provide a set of variables in my first form that I need to pass to my second form. Here is the code that I have:[code]to form 2 which then shows the data retrieved from a sql query in the load event to a datagrid view.
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May 13, 2009
I'm trying to code a button which has a SELECT statement to get information from one table but I want the information displayed in a data grid view.From the data grid view, this data will be stored in a different table within the same database.Previously i had used a list box to display the information but i could not save it in the data base.[code]Is there any way you can display this on a data grid view like i did on the listbox?Im using a datagrid view textboxcolumn column.
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Feb 15, 2011
how to retrieve image from access database?.. I've just finish retrieving data to the datagrid view. I want to retrieve also the image (also stored in the database as path inside the table where the data stored) in the picturebox. When i clicked the specific data in datagrid view, it will show preferred image to picturebox.
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Jul 21, 2010
I've got a DataGridView that has a column that will show dates/times this column needs to be sortable so I use this to tell the DGV that it is storing Date type objects (so that sorting works fine automatically):[code]Now the problem is that there will be some records shown in this DGV that do not have a value for this date column. How can I display this? If I dont set a value for that column or I set it to Nothing then the cell just shows the minimum date value (01/01/1601).Oh and this DGV is not using data binding if that makes any difference. Perhaps this might be a good time for me to investigate this data binding lark though if that will help with this issue? I'm sure I recall seeing something about being able to use one value but display another value when you use data binding thats all.
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Nov 22, 2010
I'm new to visual basic 2010 ultimate. I want to make a search button to "search" ms access 2007 database for specific data and display the results in datagridview. I also want to display the data to textboxes.
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Apr 23, 2012
I have a query (qryTallyMedalInformation) that i bound on datagridview and it has 5 columns ( country, athlete, medal, game and date). Instead of having country in the datagrid, I want to use it in a combobox to display records base on country selected.what i did (with wizard) doesnt work fine though. My country combobox shows duplicate data and the datagrid is showing all the records from different country. In one word I JUST DID NOTHING.
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Sep 2, 2010
I'm working on a form that allows to add new users to a users table in my Access database. The table only has 3 fields: user (string), password (string) and admin (boolean). user is the primary key. But when I run it and try to add, I get an error when casting the query to Double (?). I don't have any double variables or table fields, and I'm not trying to cast anything from or to double. So I have no clue about how to fix this. The code I'm using to insert (and it's working correctly on other forms and tables I have) is:
[Code]...
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Oct 16, 2011
I have a datagridview with transaction bindingsource I want the datagrid to show the sorted rows only not all the records when i enter a value into a textbox and click button sort.
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