Loading Table In Datatable From Database?
Dec 30, 2009
I am using Dynamic Textboxes. I am Loading table in Datatable from Database. From that Datatable i am naming the textboxes. After entering some values in the textboxes during runtime, i want that values to be added to the database. So i Coded as below. But i am getting errors as value of type '1-dimensional array of System.Windows.Forms.Control' cannot be converted to 'System.Windows.Forms.TextBox'.Here's my coding
Private Sub btn_click(ByVal sender As Object, ByVal e As System.EventArgs)
[Code]...
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Mar 3, 2010
I have a database in .ACCDB format with some tables.
I'm successfully loading it into an OleDbDataReader with the following code:
string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;data source=C:\marcelo.accdb";
OleDbConnection conn = new OleDbConnection(connectionString);
[Code].....
I'd like to load the table "clientes" to a datatable instead. How should I do it ?
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Mar 11, 2009
how to load the contents of an Access Database table into a Dataset? The Access Database consists of multiple tables with different data table names but all tables has same row header and same data type.
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Jun 1, 2011
I am trying to convert some old VB6 code into VB.NET. The old code used DAO and now I am trying to replicate it in ADO.NET/OleDB. I have made some advances (I think...) but now I can't figure out how to add the DataTable object into the database.[code]So instead of the TableDef, I am taking the data from the same sheet and putting it in a DataTable object (dt). I hope this is correct so far. Now my question is how to replicate the m_db.TableDefs.Append td line from above.
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Nov 5, 2010
In a web applicaion using vb.net as the code behind. I have created a DataSet (hdar) in the designer with a data table and table adapter (AccessRequests). I am trying to add a row to the database table using datatable.add row
[Code]...
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Dec 19, 2009
How do I perform an sql query onto a DataTable not a Database table?
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Mar 15, 2012
I'm creating an small application where I search from the databse table tems and add the result line to a datarow of my datatable "dt", I the set the datagridviewe datatsource to this same dt.How can I save this dt content into another table of the same database.I'm not ussing stored procedures and dont understand much of parameters.
CODE
Dim cs As New SqlConnection("Data Source=myserver;Initial Catalog=mydatabase;Integrated Security=True")
Dim da As New SqlDataAdapter
Dim ds As New DataSet("Chosed")
[code]....
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Nov 18, 2009
load the contents of a query from a dataTable Adapter into a datatable?
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Feb 29, 2012
I have a datatable with some rows I need to insert that datatable in to database using a stored procedure.
For Each row As DataRow In dt.Rows
cmd.Parameters.Add(New MySqlParameter("@DOWNLOAD_ID", dt.Rows(0)("DOWNLOAD_ID").ToString()))
cmd.Parameters.Add(New MySqlParameter("@FINALY_FIELDCODE", dt.Rows(0)("FINALY_FIELDCODE").ToString().Replace("|", "").ToString()))[code]....
When i do this I got an exception {"Parameter '@DOWNLOAD_ID' has already been defined."} How to get rid of this exception and can we insert the datatable with out for loop.
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Mar 18, 2010
I am working with VB.NET.. i have a DataTable called "QUESTION", containing 3 fields:
QuestionNumber (unique integer key)
QuestionText
QuestionType
In my SQL Server database I created a Table called "QUESTION" with the same fields.
QuestionNumber is defined as integer unique key, auto increment
Now, when i make a bulk copy to insert the DataTable into the SQL Server, the database overwrites my QuestionNumber from the DataTable and generates new ones (starting from 1 increment 1).
How do i have to change my database setup, that the original QuestionNumbers are copied into the database?
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Mar 10, 2010
How to Save DataTable Structure And Data Into A Datatbase Table..
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Apr 29, 2009
Source: DataTable
Destination: Access Database Table
I should mention that the DataTable contains data resulted by an SQL SELECT query and it's not related to the "targeted" Access Database Table.
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Oct 26, 2011
I want to track changes in an application. So I've made a copy of the main table in that application, and am accessing both tables in the application using two separate datasets.
My plan was to use the HasChanges method of the main DataSet to get changed rows and then insert those into the copy table. When I run the code I get an error:
A first chance exception of type 'System.InvalidCastException' occurred in MyApp.exe
Unable to cast object of type 'MainDataTable' to type 'MainAuditDataTable'.
Here's the code:
If Me.DataSet3.HasChanges Then
' 'look for each row that has changes, not new rows
' 'insert that row into the auditing table
[Code].....
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Sep 26, 2008
An unhandled exception of type 'System.InvalidOperationException' occurred in system.windows.forms.dllerror in line: dbAdp.Update(dbDset) in btnSave_Click, (elseif editflag = true) blockdescription: Update unable to find TableMapping['Table'] or DataTable 'Table'I was also wondering if I could simply use the ExecuteNonQuery for the delete statement, but since I've placed my data in a datarow, I'm not sure if i can actually use it. Any thoughts on this? Btw, this is my first time using a datarow, and I've recently been studying how to use ADO.net.
dr = dbDset.Tables(0).Rows(CurIndex)
dr.Delete()
dbAdp.Update(dbDset.Tables("addresses"))
[code].....
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May 2, 2011
I'm trying to call a stored procedure for a vb.net WCF program. For some reason, it's not returning any rows on the vb side. It should be a simple datatable.load(cmd.executereader). When I execute the stored proc in SQL, I get at least two rows. There are NO parameters for the stored proc. Here's my VB code:
[Code]...
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May 20, 2010
I am loading data from an excel sheet using the following code.The first test I did worked fine.But when I tried another sheet it errored on a cell that was blank"Object reference not set to an instance of an object".Even though the sheet in the first test had blank cells.I need the loop to load the blank cell in the datatable
For nRow = 1 To objSheet.UsedRange.Rows.Count - 1
dr = dt.NewRow
For nCol = 0 To objSheet.UsedRange.Columns.Count - 1
[code]...
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Nov 23, 2010
I currently have a procedure that stores the Level, Parent.Level, and Text properties of each TreeNode in a TreeView control in a DataTable.I can't seem to come up with the logic to load this data back into the TreeView from scratch, though.
Below is what i currently have in place which does not work.
Private Sub LoadTree(ByVal table As Data.DataTable)
treeBilling.Nodes.Clear()
For Each row As Data.DataRow In table.Rows
[code]....
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Jan 22, 2011
[Code] my issue is that now i need two cases, first i need a query that will return the date created and modified of the table and i also need to know if its possible to query a list of table names in the database ordered by date created but that have a certain thing in their names. for example the database contains the following tables: [Code] and what i need the query to return is the tables that contain "Data", settings and employees are for the other functions of the program. so the query should return the 4 data tables in order of date created. but i have no idea how to go about doing that in the query, does anyone know how this is done?
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Aug 11, 2012
I am having a remote server it has INVENTORY DATABSE , and also iam having same databse in my local system. I want to populate by local database table with my Remote database table through Vb.net code by click a button. How to do this .
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Feb 3, 2012
I have a vb.net form to add, modify or delete the product list..i have a datagridview in which i m loading data from sql server datatable...now i have a text box which accepts code for the product..i want that when i press a key, all data starting with that key should be highlighted in datagridview.....
eg
i have product codes
A001
A002
A003
C001
D001,, etc..
Now i press A in text box...in datagridview all data with A should be highlighted
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Aug 30, 2009
I want to add a new table in my accdb and copy the content tfrom an existing table into the new one.
Is there an easy way to do this?
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Nov 9, 2010
I am facing a "weird" problem with the DataGridView. In fact, I have a function, that loads each table of an xml file into a datagridview (27 tables all with same structure except one called Listes). In the datagridview I have a combobox column to select "type" (it's the 3rd Column, so it's index is 2 normally). The problem is that when I call the function loaddata for the first time, all work perfectly ! If I call it for a second time, to reload the data, I get an error of cast! I verified and it seems that first time I call the function the column that contains the combobox is column(2), but when I run it again automatically the indexes of the columns are changing and am getting the error, because the column that contains the combobox is becoming column (3) and that explains the cast error because the column'(2) is not anymore the combobox so the cast will fail ! What I can't understand is why it's reordering that way my columns automatically ?
Here is the code:
vb.net
Sub LoadData(Path As String )
Dim oData As DataSet
oData = New DataSet
oData.ReadXml(Path)
Dim i As Integer
Dim MaGrille As DataGridView
[Code] .....
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Jan 10, 2011
I have just turned to using VB.net and would like to know why when I load an RTF (with tables in a 9x9 cell format) all appears in a 1x9 format...i.e. instead of loading the tables (some are side by side), they load up in series (below each other).
My simple line of code on a button is:
RichTextBox.LoadFile("c: est.rtf")
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Nov 18, 2011
I wrote a function that allows me to retrieve data from a single SQL table and place it into 3 datagridviews. The problem i am having is as follows:* Whenever a user types something in anyone of the datagridviews that information is recorded in all three of the datagridviews.I am seeking partnership to address my issue. I have enclosed my function that is called to populate the 3 datagridviews
Function SetupColumns(ByVal str As String) As BindingSource
Data_set.Clear()
Try
[code]......
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Sep 1, 2011
ive a dictionary database with table having 32000 entries... ive bound it to the listbox(using binding source and dataset)... but when the program starts it hangs for 1-2 minutes in the beginning..
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Jan 18, 2011
I'm using VB.net and WPF 4, as well as an SQL database.
I have been using this EXACT code successfully for several days now, with absolutely no problems whatsoever. However, now, suddenly, it is throwing the weirdest exception...
Public Class ROSTER
Dim table_adapter As New AGENT_ROSTERTableAdapters.AGENTROSTERTableAdapter
Dim roster_table As New AGENT_ROSTER.AGENT_ROSTERDataTable
[Code]....
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Jun 2, 2011
I have a set of code that builds a table as the user enters information. This information may be changed more than once before it is considered complete. After the user is done, I want them to click a button, and have that information entered into the SQL database where it belongs. Right now, the code I am using gives the error: "System.ArgumentException: This row already belongs to another table"
Is there a way to add a table to a table like this, or do I need to add each row to the SQL table as the user moves along.
Try
For Each row In Me.tblTraining
Me.DataSet1.docContent.Rows.Add(row)
[Code]....
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May 21, 2010
I have a datatable in memory (a flat file, no primary key or relation to other table) and I wish to make a pivot table in Excel out of it. I have been using the Excel COM, so I am hoping that there is a way to do it this way. I have seen code that will put data in a pivot cache via an SQL connection string, but I have yet to find anyway of using a datatable as is.
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May 25, 2011
I have a DataTable with 20 columns and it have lot of rows. I have created a SQL table which is have the same 20 columns. Now I want to copy the complete Datatable to SQL table using VB.net 2005.
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Nov 4, 2009
asn1.htm (14.26K)
Number of downloads: 248Private Sub Command1_Click()
Dim HTML As HTMLDocument
[Code]......
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