C# - Export A DataTable To Xml With ALL Columns As Attributes?
Apr 19, 2012
Question: I'm exporting a System.Data.DataTable to XML.So far it works fine.But I want to have all the data in attributes, which works fine as well.But my problem now, if in one column, all rows are NULL, no empty attributes are written.So if I read the XML back to a DataTable, it lacks this column...How can I force write all columns even when they are empty ?(DataType not necessarely string)
public void ExportTable(string strDirectory, DataTable dtt)
{
using (System.Data.DataSet ds = new System.Data.DataSet()) {[code].....
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Feb 8, 2010
I need to loop through my datagridview1 to obtain the name of each of the columns to set the attributes. I'm not sure what I need to look for when doing this.
I tried:
For Each Field As String In DataGridView1.DataGridViewColumn and For Each Field As String In DataGridView1.Columns But it's giving me errors. What would be the proper way to loop through the DatGridView and get the name of each column?
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May 28, 2007
Is there a simple way to assign a populated datatable's columns to another empty datatable? That is, I want to copy a datatable's structure only but not its data.
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Nov 26, 2011
I have set up my connection to SQL Database.
Public Sub ConnectToSql()
Dim conn As New SqlClient.SqlConnection
' TODO: Modify the connection string and include any
' additional required properties for your database.
[Code] .....
How can I export specific columns from datagrid to specific SQL Table (and match up the columns (column names in datagrid are different to Column Names in SQL Table).
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Oct 6, 2011
I have a datatable property called prpParametersTable in a class called clsBatch. I have a procedure that sets a datatable variable called dtP equal to prpParametersTable at the beginning of the procedure. I then add three new columns to dtP.Here is my problem. When I add the three new columns to dtP my original table prpParametersTable also gets those columns added to it, why? I only want to add the three columns to dtP and not prpParametersTable. How can I do that?
Private Function prvfnc_InsertBatchParameters(ByRef cnn As SqlConnection, ByRef trans As SqlTransaction) As String
' set new columns that have BatchID, Insert DateTime, and UserID for the SQLBulkCopy method below
Dim clm As DataColumn
Dim dtP As DataTable = clsBatch.prpParametersTable
[code]....
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May 22, 2012
I generate csv content type export.
added columns like "A","B","C","D" by
columns = string.format("""{0}"",""{1}"",""{2}""","A","B","C")
stream.writeline(columns);
the csv file was exported but the first column don't having the double quotes. i need double quote with every column. i tried so many ways with in that one of the way is working fine that is columns = string.format(" ""{0}"",""{1}"",""{2}""","A","B","C") -- put space before first column.
but i need result without space.
Sample Code:
Public Class CSVExporter
Public Shared Sub WriteToCSV(personList As List(Of Person))
Dim attachment As String = "attachment; filename=PerosnList.csv"
[Code]....
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Feb 23, 2009
I have a database ms access 2003 and using vb 2008 created an application.Now, I have the database name as CompanyINFO. and in that i have a table as primary.all i wanted to do is to have a button to export.when the user clicks it. the whole table should be exported as a excel file and should be saved on the desktop as CompanyINFO_Primary_mmdd.I tried various type but was not even close to what is required.
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Oct 7, 2011
I am dealing with survey data at the moment and i am interested in extracting data of identical 5 columns from 3 excel files and then aggregate them into one excel file.below is the code im working on, fairly new to VBA so my apologies if my code doesnt make sense to you.
Sub extraction()
Dim a As Range
Dim r As Range
Dim wbSource As Workbook
Dim wbDestination As Workbook
[Code]...
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Aug 1, 2012
May I know is there anyone did this before? I have the code below: Private Function FnReadWeeklyConsumption(ByVal pstrSheetName As String,
[Code]...
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Jun 22, 2010
im creating an application that query data from fox pro, manipulate it and export it to excel.here is the code im using to creat excel object:
Dim oExcel As New Excel.Application
Dim obook As Excel.Workbook = oExcel.Workbooks.Add
im getting excell.application underlined(error msg:new cannot be used on an interface)it get fixed when i remove New, but now im getting oExcel in second line wiggly underlined(er msg;variable oExcel is used before its been assigned a value)
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Feb 17, 2012
I already have a DataTable containing all the data needed. I just need to export it to a text file.
how to export DataTable to text file. the fastest and efficient way..
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Nov 15, 2011
I want to export my database selected information into word 2003/2007.If i use below code then it takes more time [10 minutes] for 20000 records to display.Is there any other way to display 20000 records into word 2003 /2007 within 10/15 seconds
[Code]...
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Apr 16, 2010
I'm having some trouble trying to export a datatable to Access. I've built an Access DB and Table identical to the datatable that I'm trying to export using ADOX.Now using and OLEDB connection I'm trying to populate that table. The following code works just fine in another app written in 2005 but not in 2008 for some reason.
Basically I'm bringing in the empty Access table into a dataset.Filling that table with the rows from the export datatable.Then running the dataadapter's update method to send the data to Access.The problem is the da_a.Update doesn't seem to work. No errors, the Access table just isn't being populated. I checked my before and after counts. I know that the datatable is being populated. It's just not landing in Access.
Dim conn_a As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & strFullFileName)
conn_a.Open()
'Select Access Table into new Dataset[code]....
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Apr 22, 2011
I want to export data table data into excel file.My code is works perfectly. but when excel is generated its automatically open the file, but i want to display Open & save dialog box at export time.
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Nov 26, 2010
i have a datagridview table ("Bookingen") that is bound to an acces datatable
this table ("Bookingen") has columns
an i also have another form that alows people to add info like a registerform
what i would like is that when adding the info by button click
a column with the name of the person from registerform displayes in datagridview ("booking")
this my code so far
Public Class nieuw_personeel_invoer_code_
Private stroledb As String = "SELECT* FROM Loginnummer"
Private strconnection As String = "provider= Microsoft.ACE.OLEDB.12.0; Data Source=D:clifs project21.accdb; persist security Info=false;"
[Code].....
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Apr 8, 2011
How can I get a sum for all the columns in a datatable? Say I had the following table. How can I calculate the "total" row? It should be easy to add total row to a datatable.
Columns hits uniques sigups, etc...
Rows
1 12 1 23
2 1 0 5
[Code].....
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Nov 15, 2011
Friends I want to try my hands on encryption/decryption. What I want is to export the dataTable content in encrypted format to a file. And when needed import back.
I am able to do the export import as XML file, but how to encrypt the data? Regards Pranabjyoti (If a post answers your query mark the post as answer)
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Jun 2, 2011
I have a DataTable oDT. oDT is populated from SQL Server with 6 columns including a column "bAAA" of varbinary(200) I have a function fx(ByVal byteArray As Byte()) as String I would like to add a calculated column to oDT something like this:
oDT.Columns.Add("sAAA", GetType(String), fx(bAAA))
'bAAA is not declared
oDT.Columns.Add("sAAA", GetType(String), fx("bAAA".ToArray))
[Code].....
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Sep 28, 2011
Since now, I have the following:
vb
Dim x = ( _
(From row In _Obj_DataSet.Tables(TableName).Rows() _
[code]....
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Dec 30, 2011
I fill a data table with 11 columns and 1 row.
Columns/ User Pass
Row / **User2054** 1234
I have a Label named lblUser and I want to put the value=User2054 from my Table(Collumn[0], Rows[0]). How I can fill it?
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Sep 1, 2011
I currently have a datagridview that is built from a datatable So lets say we have 6 columns
A B C D E G
So the users will select there data from another program and paste into the the table. So lets assume that the data that is pasted is; (the column names are automatically put in)
A B C D E G
123 456 789 101 112 134
So the table will now look like following (I remove the first row because its the same as the column name)
A B C D E G
A B C D E G
123 456 789 101 112 134
My problem is that the users can rearrange thier tables(column index) so lets say user A has the table in this format
A B D E C G
123 456 101 112 789 134
So when they paste into the program, it will look like
A B C D E G
A B D E C G
123 456 101 112 789 134
So now "C" "D" "E" are incorrect and i need to swap those columns to be the same as the column name. I'm not sure how to attack this problem.My thoughts were to paste the data as is, than see what the first row in each column equals.so if it equals "A" assign it an index 0
B 1
C 2
This seems theres too many steps and will slow down the app...
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Jun 10, 2011
I have a Datatable- table1 and i want to sort/order this datatable in ascending order depending on 2 columns-column0,column1 of table1. how can i do that?
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Aug 9, 2011
I have a Datatable- table1 and i want to sort/order this datatable in ascending order depending on 2 columns-column0 ,column1 of table1.how can i do that?
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Jan 22, 2009
I'm using VB.net 2005 and sql server 2000 i'm fetching the data into datagridview, but datagridview has several datasource depending on the "select case " Now can i export the data from datagridview without referring to dataset/datatable?
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Apr 5, 2012
I have one datatable. In that table I have columns named [Total Day], [Present day], and [leave].
Data are as follows:
[Total Day], [Present day], [leave]
30 25 5
30 26 4
Now i want to concatenate those three columns in one another column. I want output something like this:
[Total Day] [Present Day] [Leave] [TotalDay PresentDay Leave]
30 25 5 30 VBCrLf 25 VBCrLf 5
30 26 4 30 VBCrLf 26 VBCrLf 4
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Oct 6, 2011
I have list of columns in DataTable to be added in list view. I have specified to the listview of columns in the order to appear and Datas as well.[code]
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Jan 27, 2011
Is there a way to add columns in a datatable to the intellisense of the datatable? Is there a way to display the columns of a datatable in a datagridview?
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Sep 7, 2011
I want to change the DataType of all columns of DataTable. I don't want use the loop.. [URL]
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Mar 1, 2011
I have a scenario where-in I have a DataTable with certain columns "Col1, Col2, Col3". I want to copy just "Col2, Col3" into another DataTable which has a primary key "ID". What is the best way to copy them. There are 5000+ records and performance is a key factor.I tried with Select, DefaultView.RowsFilter but no success. I know one option is to loop through all records an copy data one by one in second DataTable. But wanted to know a better way.
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Nov 25, 2011
This doesn't seem like something that should be confusing or difficult, but I'm having a hard time finding the answer to this problem. I want to copy columns with their data, not rows, from one large DataTable to a smaller one.I have a DataTable with many columns of data (around 20), and a string array of the columns (4 ) that I want in the copied DataTable. Is there a reasonable way to accomplish this task?
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