Load Xml String Into Dataset/datatable?

Mar 27, 2009

I have returned xml data in a variable and need to loop through the returned xml and pull certain data from select nodes.

I was thinking the best way would be to load into a dataset (or datatable) and loop through that.

I also have the xmlschema. What's the best way to code this?

I thought I could do something like so but it gives me the following error: DataTable 'newdt' does not match to any DataTable in source.

[Code].....

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Take An Array Of Objects And Load It Into A Dataset Datatable?

Oct 16, 2010

have a lot of experience with LINQ, but should your verb be attached to the array?

data.Tables("people").LoadDataRow(parsed(int1, 1), True) S/B
data.Tables("people").LoadDataRow(person.parsed(in t1, 1), True)

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DataSet Editor - Allows The User To Edit A DataTable In A Strongly-typed DataSet

Mar 15, 2010

When the user clicks an "Edit" button on my form, I want a box to come up which allows the user to edit a DataTable in a strongly-typed DataSet. What's the best way to do this?

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IDE :: Dataset Code Behind Datatable.ColumnChanging Event Firing / But Dataset.HasChanges Property Not True

Jan 28, 2010

I have code running in the Datatable.ColumnChanging event in my dataset. This dataset underlies a form and conventional drag/drop controls are in place for data entry.when the event triggers and runs, I am running code in the form that checks the dataset.HasChanges property. It is showing False. But this is immediately after the ColumnChanging event has been triggered.Okay, I see by others posts and MSDN that .HasChanges will only be true after moving off the row with the changed column. I have also noted lots of discussion about the advanced binding property of DataSourceUpdate Mode, but that does not address this issue.I guess I can do this by checking the state of the row for the binding source. Just seems odd that the event behind the dataset can be triggered and that does not change the dataset.HasChanges property.

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Asp.net - Copy Data From Datatable To Dataset.datatable?

Oct 31, 2010

how to copy data from datatable to table in dataset i ry this but its readonly property

ds.datatable1=newdt.copy

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Any Way To Add DataTable To DataSet?

Jul 29, 2010

I have build a datatable in vb
dim Booking_table as datatable
Is it possible to add this datatable to a dataset or do I have to build in acces2007 and import in VB.

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DataSet / DataTable - How To Do Add Row

Nov 4, 2010

I have a strongly typed dataset and datatable and I am trying to do an add row.
Dim newDT As New hdar.AccessRequestsDataTable
Dim newRow As hdar.AccessRequestsRow = newDT.NewAccessRequestsRow
newRow.Number = nextNumber
newRow.RequestedByID = Me.cboUser.SelectedValue
newRow.RequestedOn = Date.Now.ToShortDateString
[Code] .....

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Get ID From DataTable With Dataset?

Apr 27, 2012

i am using Microsoft.Office.Interop.Excel to read the data from excel,

--Students_Table--
id_S | Name | Sex
12 john M

[code]....

-----the table where uploaded excel file saved--

id_u | id-S | Scor |
1 12 30

i want to get the Id_S from "John"(excel file), i tried using the dataset with query

select Id_P from Students_Table where (Name =: Name)

and then check fillBy & GetBy my vb code :

Dim ta As New Students_TableAdapters.StudentsTableAdapter
Dim DataID as Integer
if ta.fillBy(ExlRead.Value) <> 0 then

[code]....

i use breakpoint to check those and i found an error message

"ORA-01722: invalid number"

(i'm using oracle database)if i pointed my cursor to the ta.fillBy it shows Public Overridalle Overload Function FillBy(Name as string) as decimal?

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Dataset And Inside Of It Theres Two(2) Datatable?

Jul 27, 2010

I have a dataset and inside of it theres two(2) datatable. Is it possible to do this kind of query.

"SELECT DATATABLE1.NAME FROM DATATABLE1 INNER JOIN DATATABLE2 ON DATATABLE1.ID = DATATABLE2.ID"

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.net - DataTable Already Belongs To Another DataSet

Jan 12, 2012

This error is occuring while adding one datatable from a dataset to another ."DataTable already belongs to another DataSet."

dsformulaValues.Tables.Add(m_DataAccess.GetFormulaValues(dv.ToTable.DefaultView.ToTable(False, strSelectedCols)).Tables(0))

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Putting A Datatable Into A Dataset?

Jun 16, 2010

I am trying to put a datatable into a dateset, which I then export to a CSV file. I am getting this error

DataTable already belongs to another DataSet. on the following line dsExport.Tables.Add(dtExport)
VB
Using dtExport As DataTable = DirectCast(dgvSafetyGlasses.DataSource, DataTable)

[Code]....

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Xmldocument To Datatable Or Dataset?

Mar 16, 2009

I am ably to load a XML file (via a filepath) to a datatable. See code below.However, I'd like to be able to load a in-memory XML document to a datatable.

Code: Public Function XmlToDataTable(ByRef filePath As String) As DataTable
Dim ds As New DataSet Dim dt As New DataTable ds.ReadXml(filePath) dt = ds.Tables(0).Copy()
Return dt
End Function

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.net - Automated DataSet/DataTable Instead Of SQLCommands?

Dec 26, 2011

I used to do all the database logic with SqlCommand and the Methodes ExecuteReader and ExecuteNonReader and never used something like DataSet or Datatable.

Dim dbcon As Data.Common.DbConnection
Dim cmdselect = dbcon.CreateCommand()
cmdselect.CommandText = "SELECT * FROM users WHERE id = 1"[code]...

This is sometimes hard to administrate. So I would like to use a more efficent way. May thought was to Query a DataTable, make changes to it and then call .AcceptChanges and all changes where wrote back to the Database. But this seems not to be the way it works?The method .Update requires that i bring with my own update command, if i have to do that myself, why using the datatable, dataset... anyway?How do you write your DB Backend?

With SQLCommands arrays and variables?
With DataSet, DataTable?
With a VisualStudio genereated template?
With Linq?

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C# - How To Get Distinct Values From DataTable In DataSet

Dec 23, 2011

I am using strongly typed dataset and have many tables in that. The problem is now I want to filter data from
GetData()
function which has a query like
select * from table_name

How can I filter a particular table and distinct values from it. Also if I try to filter it return all column but rest have null values except the one I asked, so I cannot assign it as a datasource to a datagrid or combobox. How can I do this..

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Convert A List To Dataset Or Datatable?

Jun 5, 2011

I need to convert bindiangsource.datasource (which is a list) to dataset or datatable.

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Create A DataView From The Dataset / Datatable?

Jan 2, 2010

How to create a dataview from a datatable?

What is the basic use of the created dataview?

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Dataset - Print Out Rows From A Datatable In .net?

Dec 31, 2011

I am new to vb.net and I am trying to query a database and print out the records in the row to the console window. I got it to work, but I have a feeling that there is a more concise way to do this. One thing that I am sure is wrong is that I had to convert the dataset to a datatable to be able to retrieve the values. Is that correct? Could you take a look at the code below (especially the for loop) and let me know what I can improve upon?

[Code]...

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Get The Instance Of One Datatable In DataSet By Tablename?

Aug 2, 2009

this code:

If Not DataSet1.Tables.Contains("Table0") Then
DataSet1.Tables.Add(New DataTable("Table0"))
End If

[code].....

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HTMl Table To Datatable Or Dataset

Nov 4, 2009

asn1.htm (14.26K)
Number of downloads: 248Private Sub Command1_Click()
Dim HTML As HTMLDocument

[Code]......

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Import Dataset / Datatable Into Sql Table?

Sep 15, 2010

I've been fighting with this problem for 2 weeks now and haven't been able to figure it out to parse data from a text file to a datatable using SteamReader. I am trying to import the data like it is displayed in the datatable into SQL Server 2005, I have tried using sqldataadapter approach, the standard approach, ADO.NET approach. [code]...

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Update Mysql From Dataset/datatable?

Apr 20, 2011

I am trying to update mysql table from a txt file using vb.net. So far I've found code here and there and been able to extract the data from the txt file, now my question is how to update mysql from the same dataset or xml file. Here is my code to populate the datagrid/dataset/xml file.what is the easiest way to update mysql assuming "Orden" is my primary key in mysql.

OpenFileDialog1.Filter = "Text File|*.txt"
OpenFileDialog1.Title = "Open File..."
OpenFileDialog1.FileName = "trackings"

[code]....

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VS 2008 Difference Between A DataTable And A DataSet

Nov 18, 2009

I've been using VB for some time now, but I must admit I am a little confused. I started learning with 2002, then 2003, 2005 and now 2008. I think database coding must have been going through a kind of transition when I was trying to teach myself the basics. As a result, I am not entirely clear on a few things..

1) What's the difference between a DataTable and a DataSet. Why would I use one over the other?

2) Personally I dislike using DataAdapters etc and much prefer typing my connections in code so I can see what's what. When using the visual tools things are 'hidden' from view and it's not clear what's going on - do others find the same or is this just me being old fashioned?

3) Using my code-based approach (ie: creating SQL connection, using ExecuteNonQuery and a SQLDataReader to read the results into my application) - is this less efficient than the alternative methods?

4) Finally...LINQ. Is it any better and should I be using it as standard practice?

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Convert 10 Lines With Three Columns Into A DataSet/DataTable?

Mar 8, 2011

I'm using vb.net / winforms.How can I convert 10 lines with three columns into a DataSet/DataTable?

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Creating Datatable By Code Without Defining Dataset?

Dec 15, 2011

I have connected my sql db with vb and I m trying to make a UI. My question is that when I write code in order to create datatables and I fill them with the results of queries I've created, where do these datatables belong? I'm wondering if I have to define a new dataset or do they belong to the existed dataset which is created by the dataset configuration wizard??

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Dataset / Datatable In Visual Developer 2008?

Jan 19, 2009

I am developing a Windows-application - database mssql - visual basic.I add Datasets to forms, bind them to daatagridview/textboxes - fill with dataadapter - everything's fine so far.

Here's my question:how do I programmaticaly move from a record/datarow i a dataset to another.I know the value of the key-field and want that record to be shown. If I use the dataset.datatable.findbykey-method, the program finds the record, but it doesn't move there.

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Execute A Function Returning Either Datatable Or Dataset?

Jul 29, 2010

I have two functions in a class. One function returns a datatable, the other one returns a dataset. Both functions are identical except of the return type (Datatable or dataset). I would like to have only one function which returns either dataset or datatable depending on what the user of the class wants. How can I do this.

Following code shows my function returning a datatable:

Public Shared Function ExecuteSPDatatable(ByVal storedProcedure As String, ByVal ParamArray parameters() As SqlParameter) As DataTable
Dim tbl As DataTable

[Code].....

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Execute A Stored Procedure For A Dataset (datatable)?

Jan 18, 2011

In vb.net is it possible to execute a sp for a dataset (datatable) ?

If no is there any alternative to do this as when I execute a sp from database it gives data saved in my db but if I am working on local dataset how to get updated data from same sp without saving to sql db first

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Fill A NEW DataSet's DataTable With Data From A DataGridView?

Jan 6, 2010

fill a NEW DataSet's DataTable with data from a DataGridView? I am generating a data report that uses that "new DataSet." I need to go from a DataGridView to a DataSet because i need the person to be able to perhaps edit the information before its inserted into the report. my process to generate the report is...

- fill datagridview with advanced join sql
- allow user to edit datagrid if necessary
- put datagrids modified information in new dataset
- set report's databinding source to new dataset
- generate report...

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Find Dataset Index Of A Row When Navigating Datatable

Sep 27, 2010

When i load my database i load it into a DataSet.When i search the database i load the results in to a DataTable.I want to find what index a search result has in the DataSet.When navigating the dataset i can use this code to get the index ds.Tables"Filmer").Rows.IndexOf(ds.Tables ("Filmer"). Rows(inc))But i can't make i get the dataset index of a search result from the DataTable.I thought that i could use the same code when navigating the DataTable, but it only returns.

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LINQ To DataSet - Convert EnumerableRowCollection Into DataTable

Mar 2, 2012

I am trying to convert my EnumerableRowCollection into a DataTable, but I can't see the CopyToDataTable method. The enm.CopyToDataTable() has the blue saw tooth line under it with error saying " 'CopyToDataTable' is not a member of 'System.Data.EnumerableRowCollection' ". I have set a Reference to System.Data, System.Data.Linq, and System.Data.DataSetExtensions. I thought the CopyToDataTable method was part of the System.Data.DataSetExtensions, right? Anyone know why I can't access this method?

[Code]...

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