What I am trying to do is to output a dataset into an xml document using Dataset.WriteXML(), but one of the things that I can't figure out how to do is to have what I believe are called inner nodes.What I mean by that is I have client data, but a client can belong to many companies, which I need to show in the xml as strings, so what I was thinking it should look like is...
<ClientData>
<Client>
<ClientName>[code].....
I have a question about using writeXml. When I use this method, it writes to the specified xml file like this:
<safety><Incident>
<Name>Jason</Name>
<AGE>23</AGE>
</Incident>
<Incident>
<Name>Frank</Name>
<AGE>25</AGE>
</Incident></safety>
But, I would like to add these nodes to a parent node, i.e.:
<safety><SomeNode><Incident>
<Name>Jason</Name>
<AGE>23</AGE>
</Incident>
<Incident>
<Name>Frank</Name>
<AGE>25</AGE>
</Incident></someNode></safety>
I am creating the xml by first creating a dataset (connects to an SQL db and runs a query, filling the dataset) and using ds.WriteXML(myPath)
In VB.NET when I use the WriteXML of DataSet, can I customize it? That is to say; I want to make a structure like this:
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I have some code that creates a dataset from a backend server. I then use the WriteXML method to output it to an XML file. This works fine. But some folks have requested that I sort the output one way or the other (yes, it is easy for them to do so, but they are end users and want the computer to do all their work.) I know I can use .select to extract the data to an array, but I would then have to write that array out to a .XML file. It would be easier (I think) to just sort the data before I output it to XML. I had thought there might be something like dataset.table(0).sortColumn = 2 or something like that, but apparently not.There is only one table and the code will know which columns may be used for sorting.
View 3 RepliesWhen i output my dataset to an xml file, 87 nested tables with 218 class object (system.type.object) columms i get 247,691 instances of output like this."msdata:InstanceType="LotNet.LForm+Pointer, Learing Programs, Version=1.3.0.9, Culture=neutral, PublicKeyToken=null" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">" In this case the decluration is more then twice the size of the Pointer. Is there any way to supress this kind of output the data is only used for internal consumption by other moduals.
View 2 RepliesI am stack at work finishing my program.I have a piece of code to write an xml file.
Dim ds As New DataSet
Dim dt As DataTable = GetDtable()
ds.Tables.Add(dt)
[code]....
That work will write an XML file whatever I put in the datatable (or dataset). It is just a simple code and it works fine. The problem is it will replace the old file everytime the new file is created. I really don't want that to happen. I also want to include 2 variables (username, sessionID) also time of the file created in the file name. So file name will be Username_sessionID_time.xml rathen than a fixed name.
I have an XML file that is being updated via ASP.NET. The user should be able to add new nodes to the XML file AT ANY LOCATION in the node tree.
The XML file is read into a DataSet using DataSet.ReadXml(filename).
A new row is added to the appropriate DataTable, using InsertAt(row, index).
I have confirmed using a DataGrid, and using a loop (For Each dRow in Table, Response.Write..) that the new Row was inserted into the table at the correct spot (in my example code, the 3rd position).
However, The WriteXml() method is writing the node to the END of the XML tree! I can't get it to see the tree with the node in the correct location.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim sXML_Lesson As String = "test.xml"
[Code]......
I'm all new to this treeview business. I have a fixed treeview, very simple and basic. Only two levels, parent and child nodes. I just need two things out of this treeview.
1) If parent is checked, check all child nodes.
2) If just one child node is unchecked, uncheck parent node.
That's it! I've been looking for this for 30 mins and I cant find it. Maybe because my vb.net is old, it doesnt seem to be the same as others =/ I'm using vb.net 2003.
I have a problem with my treeview. I have two child nodes with different parents which contains a literal (*x). In this case (*1) (view image)
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Is the following possible in one XPath expression (see sample below) Select all (span tags of class msg) AND all ((img tags that have a non-empty alt attribute) AND (are NOT located inside a span tag of class msg))
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I have a treeview that is populated from a HDD folder collection. Its structure is similar to the following (however the structure is dynamic):
My Disk:
|
|--folder1(tag:folder)
| |--subfolder1(tag:folder)
[code]....
I call the sub as follows:
deleteNode(treeview1.Nodes(0).Nodes)
However, the above is not working properly. It deletes only some nodes and not all the targeted nodes.
I have a dataset which I wish to export to XML. The writeXML function works fine, but if a value in my dataset is a NULL, it doesn't export that element at all, for that row. I would have expected it to export at least an open and closed element.
View 4 RepliesI have code to write xml file but unfortunately the database had field name with sapce eg. "form no" but when the xml file saves it converts to
"form_x0020_no" Pls tell me if there is any solution so that xml could be written with "form_no". and at this stage of application development i cannot chnage the variable names.
how to add treeview nodes and sub sub nodes using functions
View 1 RepliesI have developed a program that tracks expenses for business trips that uses just a local SQL CE database on the user's pc. I chose SQL CE because the install process was much quicker and easier than Express. I have distributed the solution and I am looking for a way to allow users to backup and restore the data. I though that the readXML and writeXML methods from the dataset sounded like a good method, but I can't get it to work. I have tried a couple methods which have ended in either foreign key errors or not being able to keep the same primary keys as when the data was exported using readXML.
The basic structure for the data is:SQL CE Database -> DataAdapter.Fill -> Dataset -> Displayed to user through binding sources and other means The problem is not exporting the dataset with .writeXML, but getting the data back into database. The one shot .updateAll from the main table adapter creates foreign key failures, so I have reverted to iterating through the dataset and sending one row at a time, but I still can't get it to work.
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I'm running out of walls to bang my head against. Okay new windows form with a textbox, button and TreeView Populate the TreeView.nodes with the default nodes via properties
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I want to click button1 and have the name of the childnode? Node3? placed in the textbox. Not via selection, I can do that. But via index or item number. The code I have is as follows
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How to correctly insert image data from XML file to database table using sql server CE and openxml,XML file is written by vb.net DataSet.WriteXml method?image data is stored in database table is :
0x89504E47.my XML file Content after written by WriteXml method is :
<?xml version="1.0" standalone="yes"?>
<Data>
<Table>
<image>iVBORw0KGgoAAAANSUhEUgAAAcIAAAGuCAYAAAADLg..</image>
</Table>
</Data>
but after inserting with openrowset and openxml using stored procedure to another database table its value changes to this :0x2F0039006A002F00340041004100510.and is not the first value and raises an error in vb.net for opening image from database.
I have to generate an XML file from several database tables. I could use the WriteXml method of the DataSet to do it, but the database tables are really huge and I can't add all those tables in the DataSet at the same time or it may cause a problem because of the big amount of memory used. Then I decided to use the DataTable's WriteXml method and save table after table, but the the generated file only stores the information of the last DataTable.WriteXml's call. How can I preserve the previous XML data when adding all that information?
View 4 RepliesOK, so I have the code to add a Child Node to a selected node in ta TreeView. The thing is, even if I select a child node to "add" to, it adds the new node to the parent of the selected child node.
I know why it does that: TreeView1.Nodes(TreeView1.SelectedNode.Index).Nodes.Add() adds to the first node. So how do I progamatically add to the child node I have selected, not it's parent node. I can't figure out the logic on how to accomplish this.
NOTE: There can be an infinite amount of child nodes.
UPDATE: I just found out that if I have a child node selected, TreeView1.SelectedNode.Index returns -1 since there is nothing selected in that first level. I'd have to use TreeView1.Nodes(0).SelectedNode.Index to get the proper index for the ChildNode. *sigh*
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?
View 2 RepliesI 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.
View 3 RepliesI have tried everything I can to get beyond this error which shows below as <<<<< error here. It is trying to fill a dataset from a data adapter. If I change the SELECT statement to just SELECT * FROM xTable I get the correct number of records in each table. But anytime I try with a more complex statement I get the error message shown below which indicates System.Data.Common.DbDataAdapter.Fill(DataSet dataSet. I've completely erased all data and entered a new set of test data so I know there is no problem with relationships. Each table has primary key which is foreign key in other table. IS there something wrong with the Imports section: Imports System
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i am trying to copy data from a standard Dataset to a Type Dataset (XSD) of same table structure. i want to use Automapper to do that one. So how can i do that using automapper?
View 1 RepliesI need to pick all data in my application from my database and use it in my form
my question : how to pick all data in my application then i use it
I have two Datagrids, One grid has all the customers garments on it with style number and contact length. The other grid has the users who have garment issued to them. the style number is in both grids. I need to loop through the users grid and say if the contract number is 1 from the first grid then the contract date on the second grid will be todays date + 365 days (year contract) I have looked at using a stored procedure and also a for each command but I am just getting stuck with it all. [Code]
View 1 RepliesI have a problem saving a dataset which contains rows that i have imported from another dataset. i can successfully view the imported rows in a gridview but i cannot commit the rows back to the database.
View 2 RepliesI have multiple datasets that I would like to combine into one. There is a common ID field that can be associated to each row. Calling Merge on the dataset will add additional rows to the dataset, but I would like to combine the additional columns. There are too many fields to do this in one query and therefore would make it unmanageable. Each individual query would be able to handle ordering to ensure the data is placed in the correct row.
For Example lets say I have two queries resulting in two datasets:
SELECT ID, colA, colB
SELECT colC, colD
The resulting dataset would look like
ID colA colB colC colD
1 a b c d
2 e f g h
ok, I've finally got my test database issues sorted out, however now I need to actually modify my existing report to add the two new fields from my test database. I have made a copy of the report so that I am not modifying the original. I have deleted the two old fields and now want to add my two new fields in there. In the Field explorer window, I see an object called "dataset1" and when I expand it, it is using a view that includes fields from the table that I added my two new fields to.
The problem I see here is that I have gone in and modified the view to include these two new fields in my test database - but again, they are not showing up as selectable fields here. I am just assuming that "dataset1" is somehow pointing to the live database again and that I need to change the datasource location.In my solution explorer, I see an object called "dataset1.xsd" but the properties of that do not tell me much about where it is actually pointing to...
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I want to access data using both the datasets.
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Try
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In my code i have dataset name ds and table named Info1,when i write ds after that how tablename is coming,its not possible? How to do that ?
I have an xml document and I loaded it to work with:
Dim doc As New Xml.XmlDocument
doc.Load("test.xml")
I want to access one of the nodes. It's the third child node of a parent node. How can I get there?