Datagridview That Shows A Bunch Of Data Through A Database?
Sep 11, 2009
Ok I have a datagridview that shows a bunch of data through a Database. So I have the script connect to the database and I have a while loop going so that it keeps searching through the database to make sure it "publishes" all of the data in there. My problem is, it doesn't show the first set of data. For example: I have 2 columns, one header is Name, and the other is Y/N. The data in the database:
Jim, N
Alex, Y
Pat, N
George, Y
When I run the program, and it populates the datagridview, the first set of data is removed, so it only shows Alex, Pat, and George. Does anyone know why this happens? Does it perhaps have something to do with the column headers writing over the first set of data?
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Oct 22, 2009
I have an unbound datagridview with a whole bunch of columns.I need to sort based on 4 columns, the first three are simple strings, the fouth is a date string (which in itself presents a problem, since it wants to sort lexically but I need them in date order).
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May 13, 2010
vb.net send a bunch of data to flash. i.e i want all data in a listview will be send in list view of flash and vice versa all items in flash will be send in listview of vb.net ?
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Apr 28, 2010
I made a small application in VB.NET that allows user to scan a bunch of barcodes and save them in the database.Application works both for the regular computer browser and handheld pocket PC.Barcode can be either scanned into upc text field and automatically submitted to db or numbers can be manually added into upc text field and pressing Enter will add it to db.There are also two buttons on the page. One button "Clear" is to clear upc field in case user started a manual input and didn't like it. Second button "Exit" logs out a user.
User should just scan a barcode and it will be automatically added to db without pressing any Submit button so user can go through a lot of barcodes fast. In order to achieve this, upc text field has AutoPostBack property set to True.Then in the Page_Load event if len(upc.text)>0, then data from upc.text gets submitted to db and upc.text gets empty again.If len(upc.text) =0, nothing happens.So it works fine in case of a handheld. It scans and sets upc.text to empty string. So if I scan and press Exit button after that, I just exit without a problem.
But there is a bug if I input a upc number manually and then press an Exit button for some reason. Pressing a button causes the page to reload and number gets submitted to the database anyway though I just wanted to exit. In fact, if there is any data in the upc field, any action, pressing Enter, pressing the button, clicking with mouse on the screen, causes that data to be submitted to db in the page_load event.How can I avoid this situation if I still want items to be submitted automatically without pressing any button while scanning?
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Feb 16, 2012
I am a newbie at VB.net and would like for you to review my code in order to improve its performance.My objective is to append a bunch of ".csv" files into daily data sets. Within a directory I have about 2500 individual text file (.csv). Each file represents minute intraday stock market data for an individual stock covering 5 days or one week of data. This means that each symbol has 1950 string lines..Here is an example of what a string line looks like: "2011-06-27,10:07,48.15,48.15,48.02,48.02,25421". Not that is relevant but these represent Date, time,Open, High, Low, Close & Volume. Since I have 2500 files within a directory; doing some math, I am processing 2500*1950 = 4,875,000 lines. This process takes me about 16 hrs to run.[code]
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Nov 5, 2009
I have written code to show records in a datagridview but it shows nothing. I have tried to debug & when it step into GetData function following codes
Catch ex As Exception
returnData = Nothing
If connection.State = ConnectionState.Open Then
[code]....
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Apr 9, 2010
I have three tables in SQL server which I would like to show and access on a form. Table 1 contains account data, address, contact details etc. Table two contains data attached to a Person, tel no , Mobile no, Email etc. Table three contains details on what awards the person holds, i.e. one person can hold several awards.
Therefore I have a one many relationship between the first two tables and a one many relationship between the second two tables. This is set up in SQL
The first two tables are shown on a form, table 1 via a set of text boxes, table 2 via a datagrid control.
I would like the functionality whereby I could select a row in the datagrid showing the persons name and find the Persons_ID number then use that as a filter to a second datagrid view so that only the selected persons awards show in the datagrid.
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Jan 5, 2012
I Need to Store bunch of Jpeg files from local file system to a column with image datatype in databse.Can any one please provide me some code to do it?
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Sep 1, 2009
I execute a stored procedure which updates data. Is there a way to refresh the data in a datagridview to match the database's data.
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May 19, 2012
I'm trying to prepare my first program (database). I'm creating it just according to my knowledge so it's a little bit cr. [Code] when I'm choosing the value from CB1 then values in CB2 and CB3 are changing to the same value. then in all DGV is selected row with value chosen in CB1 (if present). CB2.Text = CB1.Text
Now I would like to copy the text from specific column of chosen row in DGV1 to TB1... but only part of the text. [Code] unfortunately when I make simple data-binding without cutting the text it shows me value from actual selected row but wen I'm using Microsoft.VisualBasic.Right it shows me the cutted part from previous choose.
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Nov 23, 2010
I need a clarification about using datagridview and query statement. i created a sql express database. In the project has been created a dataset with inside a table. In my form i used a datagridview and in automatic have been created BindingSource, TableAdapter, TableAdapterManager and BindingNavigator.
Till here everything is ok because i can add, delete and save members of the table.
Now i wanted to use another datagridview for a research but i don't understand what to use for do that.
procedure to search in a table using a new query?
I know that have been already done this kind of questions but i don't understant if using bindingsource, sqltableadapter, tableadapter ecc..
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Apr 16, 2010
I have a gridview in asp.net using vb 2005. on " Protected Overrides Sub Render"some of the data in the columns gets modified. when i do a view source.. and look at a column1's values it says 0010. in the render i am taking a value of ab0010 and turning it into the 0010 that is seen in the view source.. later on, there is a button_click event that goes through each line of the gridview and grabs some values. Here I'm doing a CType(gvr.FindControl("column1"), Label).Text the value is coming back as ab0010. so the question is.. the view source shows something different than what is in the viewstate?
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Apr 1, 2011
I have a DataGridView1 where I have 6 columns and 0 rows (they are added additionaly in the application) and also have a TextBox1. How can I calculate all data from the second column to the TextBox1? For example, I'll run the application and add rows, where the text in the second column will be: (4, 8, 9, 1)... it means 4 rows...
So how can I make the value of those numbers (22) show in the TextBox1, so that it will calculate the numbers and show the sum in the TextBox1?
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Feb 5, 2011
when i select a cell in datagridviewbuttoncell the rectangle should show on the selectedcell in datagridview but instead it shows two columns further and rectangle also shows on the last add value in the datagridviewcell..how can i make all the values in datagridview shows rectangle instead of only one? [code]
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Apr 5, 2011
I don't know why it is not saved to the table. Here is my code.
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As _
System.EventArgs) Handles btnSave.Click
Try
[Code]....
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Apr 21, 2010
I able to insert new row into my datagridview. but dont know how to inserts all the row into my database
this is my code to insert new row into my datagridview[code]...
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Jan 10, 2012
Im new to vb.net and would like to know the very basics on how a datagridview works? how does it populate data from the database? what process does vb follow to update this datagridview? I'm trying to get my head around the following terms and need some explaining how they work and how they are linked? if possible, is there a link to a diagram that explains this?
[Code]...
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Jun 6, 2011
i know how to write a code to display data from the database into a datagridview, and i know how to use text boxs for uplying chnages on the database and directly display them in the datagridview, but what i want is to be able to aply changes without using textbox but directly the datagridview, so the user will be able to see that data on the datagriedview and insert his data in its field and update other and when he saves it will directly effect the database.
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Sep 6, 2009
I want to fetch some data from the database to the DataGridView,so i did this
Dim connString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Etech.mdb"
Dim myConnection As OleDbConnection = New OleDbConnection
myConnection.ConnectionString = connString
[Code].....
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Mar 15, 2011
i have code to load data from database to DataGridView.
VB.NET
Imports System.DataImports System.Data.OleDb Public Class Form1 Dim dt As New DataTable Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Me.WindowState = FormWindowState.Maximized End Sub Sub setData()
[Code]...
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May 16, 2009
Can anyone suggest me how to pass datagridview data to database.
Process must be like this, if the user enter multiple data into the datagridview after user press "save" button, datagridview data must be passed to database. Need C# code in windows application. It should have some comboxbox control in datagridview.
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Jan 17, 2011
I have datagridview in which 2 & 3 rd columns are Combo Box. I have saved the data to the database from datagridview. But while retrive if i assign datatgridview.datasource= mydatatable.It addes new coulm show the values. for my combobox columns it shows the value member values. If change the datagridview.autogeneratecolumns =false
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Mar 30, 2010
How to show data from my database in datagridview and i can add,edit and delete in datagridview
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Mar 20, 2012
I have a small DataGridView which lets the user enter data.
And I'm trying this code to enter the data in the DataGridView to the database.
strQry = "INSERT INTO Emp_Fam_Details (empID, famName, famAge, famRelation, famOccup)" _
& "VALUES (@ID, @Name, @Age, @Rel, @Occ)"
[Code]....
I found this solution here on SO but since I'm using Parameters not appended values, I'm having a hard time understanding how to do it with parameters.
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Feb 9, 2010
My datagridview is displaying records from table in database.When I go to add a new record the 'pencil' icon does not appear so when I click on save button update to database table does not take place.code behind save button is
BindingContext(TheatreBindingSource).EndCurrentEdit()
PatientTableAdapter.Update(TheatreDataSet)
PatientTableAdapter.Connection.Close()
i have spent all day trying to sort this ...any ideas and yes my theatrebindsource.allownew is set to true
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May 3, 2012
There are 3 textboxes->textbox1,textbox2,textbox3 and 1 button.In textbox1 bname will be stored and in textbox2 aname is stored.Bname and aname are columns of databasetable.This are not unique.There are same bnames and anames records.What I am trying to do is:when the user clicks on button then the code should match textbox1 and textbox2 with the databasetable and get the count of rows that match this data.
And print the count in the textbox3.If there is no similar bname and aname in the table then the count should show 0.I tried doing this but am pretty sure that its not right as its not working.
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Apr 30, 2011
When the program is executed, the datagridview populate data and also the textboxes(example StockNumber,Description) and when i typed words in the search textbox ,the datagridview filters the matching words.When I clicked the item in the datagridview the textboxes does not changed it didnt show the information...
what the solution for my problem..i need to display the information in the textboxes when i clicked the item in the datagridview. Private Sub txtreg_delsrch_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtreg_delsrch.TextChanged
[Code]...
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May 12, 2009
I have a datagridview on a form , and I just want to take this data and save in access database, if I enter a direct value in this code , it works but it does not take a value from datagrid,I am work on this from last two daysIt throws an error saying that parameter userid has no valueError I believe is at DV.Rows(0).Cells(0).Value I think it cannot get value from Datagridview
Private Sub btnupdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnupdate.Click
Dim ds As New DataSet
[code].....
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Dec 17, 2009
I'm using VB Express 2008 in Windows 7 64-bit. I'm working on a project with a datagridview bound to a MS Access 2007 database. I want to use the datagridview to add, delete and update the data in the MS Access database. When I added the database file to the project through the Datasource Configuration Wizard, I selected 'No' to copy the file to the project folder. The connection string automatically placed in the project settings is: Provider=Microsoft.ACE.OLEDB.12.0;Data Source="F:My MoneyDoBillsDoBills2009.accdb"* The 'Copy to Output Directory" property for the DoBills2009DataSet.xsd is set to '*Do not copy*'(and I've tried every other setting available). So, as I understand it, I am working with the original file, not a copy, and any changes (additions, deletions, field changes, etc.) are made directly to the original file. I have added the following code to the datagridview rowleave event: [code]I'll figure out a way to skip the update if nothing is changed, but for right now, it doesn't work. I've searched MSDN, the MS Community forum and several other forums for a solution and all I have found is what I already have and it doesn't work.I can make changes at run-time alright, but the exception it triggered when I change rows, and the data is not saved to the database file.When I close/re-run the app, the changes to the data are not thereThere has to be a way to save changes to the datafile, but I'm just not finding it.
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Dec 17, 2009
I'm using VB Express 2008 in Windows 7 64-bit. I'm working on a project with a datagridview bound to a MS Access 2007 database. I want to use the datagridview to add, delete and update the data in the MS Access database. When I added the database file to the project through the Datasource Configuration Wizard, I selected 'No' to copy the file to the project folder. The connection string automatically placed in the project settings is:Provider=Microsoft.ACE.OLEDB.12.0;Data Source="F:My MoneyDoBillsDoBills2009.accdb" The 'Copy to Output Directory" property for the DoBills2009DataSet.xsd is set to '*Do not copy*'(and I've tried every other setting available). So, as I understand it, I am working with the original file, not a copy, and any changes (additions, deletions, field changes, etc.) are made directly to the original file. I have added the following code to the datagridview rowleave event:
Private Sub dgvSortBills_RowLeave(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dgvSortBills.RowLeave
Try
[code].....
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