Adding table in a dataset from another dataset
I am running 2 database queries on 2 different database tables and I generate 2 datasets for the results of each of these queries. Now, I want to return only one dataset from this function. To do this I tried to write this code which gave error "System.ArgumentException: DataTable already belongs to another DataSet. at System.Data.DataTableCollection.BaseAdd(DataTable table)".
ds1 = getDataset1Recs()
ds2 = getDataset2Recs()
How can implement this?
ds1.Tables.Add(ds2.Tables(0).Clone()) sho...Unable to cast object of type 'System.Data.DataSet' to Typed DataSet
Hi every one,
I currently develop an application in vs.net 2005 with vb.net.I was trying to use typed dataset and I've got in trouble for converting untyped dataset into Typed DataSet. I don't know why I cannot perform this casting operation properly.First off, I've got my Typed DataSet named "AuthInfo" declared and I then created an instance of that class. What I'd like to do next is to perform querying through the method ExecuteDataSet() of Microsoft Data Access Library which will return me the untyped dataset. Here is the point, I would like...Dataset table not adding columns + disapearing datasets
I have a dataset that I fill in using xml that I generate from the results of a COM object. I created the dataset by using the design mode and adding the columns through the property dialogs. One day I decided to add one more field, so I opened it up in design mode and added the column which seemed to show up ok, but then when I switch to code view the column definition is not there!!
I have tried adding it in design mode and waiting a while then switching to code, I have tried not switching to the code view and just running it after designing, I have tried saving and reloading, rebooting...DataSet and Typed DataSet
What is the difference between DataSet and Typed DataSet?
please use a search engine for some so trivial like this: http://search.live.com/results.aspx?q=difference+between+untyped+and+typed+dataset&form=QBLH.
Grz, Kris.Read my blog. Handy Firefox plugins for web developers.Workaround for non working Mark as answer buttons....What is DataSet.xsd? How is DataSet.xsd used?
Hello, I am trying to understand what DataSet.xsd is and how is works. I searched the forum, but I could not find documentations that explain it. I am looking at the club web site now and I do not understand how DataSet.xsd is used in the web site.Suggestions would be appreciated.Jim
Hi jim,If you have used DataSet Typed then you would have <custom>.xsd. In your case DataSet.xsd. It is very useful to Crystal Reports and other stuffs.Good Coding!Javier Luna http://guydotnetxmlwebservices.blogspot.com/ from Villa El Salvador for world!
&...Writing a Perticular Table Data with its dependency table data from a DataSet to a XML File.
I am trying to write the content of a perticular table with its all dependency tables to a XML File from a Dataset . i am writing code like :
and path = ...calls made to dataset .xsd file
Is a way to easily track the number of calls made to dataset .xsd file? (a number calls to the database)
or do I have to make a session variable and increment for this?
...Dataset To Dataset
I have two datasets open, one is empty. How can I append all data from the full one to the empty one?
ds2 = ds1.Clone will copy the structure and not data.
ds2 = ds1.copy will copy both the structure and the data.
HTH"Providing software solutions for your world!"Excellent .NET Hosting here!
I believe you could do that with dataset.Merge(originaldataset)
Grz, Kris.Read my blog. Handy Firefox plugins for web developers.Workaround for non working Mark as answer buttons.
You may try to use DataSet.Tables.Add like this:
...How do I make a XML file a Dataset or Datasource?
OK I have an XML file I exported from code using :
Dim myDataSet As New DataSet'Build XML DatasourcestrSQL = "SELECT * from Predefind_Titles ORDER BY Descr"myConnection.Open()myDataAdapter = New SqlDataAdapter(strSQL, myConnection)myDataAdapter.Fill(myDataSet)myDataSet.WriteXml(ConfigurationManager.AppSettings("RepositoryPath") & "Predefind_Titles.xml", XmlWriteMode.WriteSchema)
Now I want to populate a combo box from the xml file: Can someone supply a link or sample vb .net code that shows how to do this? I looked all over the web and found a ton...Applying an XSD File to an XML Dataset
I have an XSD file from a third party and I want to apply my Dataset XML results to this XSD file. Is this possible? If so, can someone please help me with this.
might be that I'm not native speaker but what do you mean by "applying DataSet results to to XSD file"? Do you mean that you'd want to format the XML so that it is valid according to the given third party schema? If yes, that is a job for XSLT transformation.Thanks,Teemu KeiskiFinland, EU
Yes, but I want to use the XSD file that I had gotton from the third party.
XSD is schema file and it...what is typed dataset, in which scenario we use typed dataset ?
what is typed dataset, in which scenario we use typed dataset ?
The introduction to this set of tutorials answers that question: http://www.asp.net/learn/data-access/ Regards Mike [MVP - ASP/ASP.NET]My site...To dataset or not to dataset.
So. the web form I'm building will be used to display the details of an organisation.. and that organisation has a corresponding table in MSSQL Now, obviously I could retrieve a dataset for the row that belongs to the organisation, and reference the column name every time I want an individual property. However, I don't really want to have lots of myLabel.Text = ds.Tables.Rows["Org_name"].ToString(); etc. lying around for each property. Ideally I'd create a control that has labels for each column, and tags that correspond that can be placed anywhere in the aspx file..So ...Object Datasource Udpates with Typed Datasets
Hello,Like many people I'm struggling with getting the ObjectDatsource update to work in a reasonable manner. I planned to use Typed datasets for by business entities to pass around between layers of my app but I can't easily get the udpate to work directly with a dataset. Let me set the scene :I have a Customer typed Dataset "CustomerDS", containg a Customer table and therefore a CustomerRow object. Imagine by business logic layer methods :public CustomerDS getCustomerByName(string custName) public void writeCustomer(CustomerDS customer)public void writeCustomerRow(CustomerDS.CustomerRow ...one dataset table to multiple table dataset...
Hi,I have a dataset datatableselect ORDER ,DESCRIPTION,FIRSTNAME,LASTNAME,ADDRESS,ZIPFROM Order I need to select only FIRSTNAME,LASTNAME,ADDRESS,ZIP and insert in to new table called CONTACTS which has identity column CONTACTKEY. Then i need to select order and description and insert in to new table ORDERS which has ORDERID as identity column with one more column CONTACTKEY which has a foreignkey relationship to order table so when i am inserting the rows for orders the same contactkey should be updated in to...