Dataset's ReadXML() method would read an XML document. But how would we skip certain columns? [Code] So, if I use ReadXML(), it would read the whole document and the dataTable would have "id" column, "name" column and "price" column. But I want to have only "id" and "name" column. How can I skip certain columns from reading it?
View 3 RepliesFollowing is the code which gets xml data from web service and then dataset reads using ReadXml method. This Xml has ID and MyDate tags for each table row (so table(0) will have ID and MyDate columns) and this Xml data does not have schema associated with it. When page is loaded first time, it sorts by ID in asc order. It was working until ID was 999. When next ID came as 1000, even in ID asc, 1000 is showing before 999 in datagrid.
I wanted to confirm that when dataset is loaded using ReadXml, all the columns in its table are treated as string even they are numbers or dates and that's why in ID asc order 1000 is coming before 999.
Also, MyDate tag has date in format "01/31/2011" (mm/dd/yyyy) and it seems that sorting is wroking fine for date. Would sorting by date always work even when dataset table MyDate column is of type string (assuming that my above statement is correct)? Are my two above assumptions correct?
stream = New System.IO.StringReader(XML data returned from web service)
With dataset
.ReadXml(stream)
dvView = .Tables(0).DefaultView
[code]...
I have a Dataset Lets call it Dataset1. I have 1 table in this dataset created in designer called settings. I want to be able to declare the intial dataset in one form as a global variable and make a copy of it in another form. However I don't want to fill it until after I have made the copy except that it is not working.[code]The problem is the Dt returns the same amount of columns and the exact column names that I have in the settings datatable. When I do Dt.ReadXml("Myxmlfile") I don't get any rows populated yet the columns are in the xml file and in the dt copy of the datable.
View 1 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
i am getting the xml using readxml method. And then display the data in datagrid. But number type columns comes as string type in the dataset. So when datagrid displays , sortingdatagrid columns is not correct. For example it sorts like this:
Salary
1180
12133
[code]......
I have a dataset which I am populating via an Oracle SQL query:
SELECT col_id, col_desc
FROM table_data;
Then I generate the dataset, via the function
Dim ds as New DataSet
OracleDataAdapter.Fill(ds)
Now, when I get the XML of the generated dataset via:
Dim strXML as String
strXML = ds.GetXML()
When I read/display the string, it is showing as follows:
<NewDataSet>
<Table>
<COL_ID>ABC001</COL_ID>[code]....
How would I be able to accomplish this? I would read the rows from the table in the dataset and construct the string?
I have an XML form, and I want to read in the values in each of the elements of that form. I have a bit of code to start me off, but it doesnt just read the data in the xml tags, it reads the xml tags as blanks. I need to know how to get around that, so that the program displays the data only.[code]....
View 11 RepliesI have an xml document and I want to read the elements from it.Here is what I have:
<my:assetTracking xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2005-10-21T21:12:27" xmlns:xd="http://schemas.microsoft.com/office/infopath/2003">
<my:employee>
<my:employeeName></my:employeeName>
[Code]...
I like to read text from another application's buttons, labels and textboxes with the help of "SendMessage". I've tried so many different code examples, but nothing worked. Maybe somebody of you has a small VB.Net-Example on your harddrive and explain it a bit to me.
View 1 RepliesI have to get all the Entity Source,Entity Target,Property Source and Property Target values in list respectively.[code]...
View 1 Replieshow to read HTML text box elements from the Web Browser control
View 2 RepliesI have a string with xml data.Dim appManifest As String = New System.IO.StreamReader(Application.GetResourceStream(New System.Windows.Resources.StreamResourceInfo(e.Result, Nothing), New Uri("AppManifest.xaml", UriKind.Relative)).Stream).ReadToEnd()
[Code]...
I am using Visual studio 2008 trial edition and SQL server to make a VB.NET app. I have a windows form which i use to add information to a database, by using a dataset. I recently increased the precision of a column using SQL server manager. I went from numeric(8, 4) to numeric(10, 6). I have my datatable's column set to system.decimal with a maxlength of -1. The problem is when i try and add a row using my program, the column now truncates the values as if it was still set to numeric(8, 4). I have checked my controls to make sure they are not truncating. I am currently creating a row and filling it with values and then adding it to the dataset and then updating the dataset. When i look at the locals during run time the row has the correct truncated value before and after i add it to the dataset but the truncated value is getting added to the database. I have tried manual entering data that is to large for the numeric(8, 4) and the database excepts it. It seem like the dataset does not realize the database has changed.
View 4 Replieshow can I get the array of column names from a datagrid. The datagridview is bound to a dataset that contains a datatable.
Example: Columns [A B C D E F G] then you would check the array and see if any values match those
I have a function which does some processing. Lets name that function DoWork. This function takes some inputs as structure and a string. Now I want to start two threads which would read some elements in an array and then call DoWork with some data and value of that element. DoWork would do processing and thats it. I want two threads to run side by sid.
So I tried to write code but kinda failed. I wrote a function which starts a thread and calls DoWork. Now DoWork accepts structure and string etc. But when we do say abcthread = new threadig.thread(addressof <sub name>). here we cant pass any-value except object. That was first problem.
Anyway, main problem is after the thread has finished processing DoWork, how do I find that out and tell that thread to take another element from array and start again. This has to be managed for both the threads. I need to find out which thread has finished first and tell it to start again with another value. I have usually used one thread but not two in this way.
in my VB.Net application I've created a Dataset that call an existing MS SQL Server stored procedure but after the wizard close no columns where added... how can I add all the columns returned by the stored procedure without adding them manually (off course the stored procedure might change in the future) in which case manually will not work.
View 1 RepliesI am running queries using sqlcommand and am trying to get the results from sqldatareader into a dataset table. It works fine when loading the datareader data as a row into the dataset table and writes it to a crystal report.I would like to have depending on the query results have the data in the appropriate columns and it only happens if the results are from all fields.
Dim CommandObj2 As New SqlCommand(sql, cnn)
sqldr = CommandObj2.ExecuteReader()
While sqldr.Read()
Dim dataRow As DataRow = ds.Tables("NTable").NewRow()
[code]....
MsgBox(ds.NTable.Rows.Count, MsgBoxStyle.OkOnly, "Records Count")My dataset and table have the same name, NTable. Question again is how to populate the dataset columns accordingly.
I'm using vb.net / winforms.How can I convert 10 lines with three columns into a DataSet/DataTable?
View 1 Replieswhat i need to do is to get some data from sqlserver and send it to a dataset(no problem there) after i get the dataset filled i need to send the columns and rows to a textfile but i have to separate the columns on the dataset with this "|"
View 2 RepliesI add columns to my dataset but when start my application again columns are not there
[Code]...
I am using dataset in my project.After filling all the tables in dataset,i want to perform join queries on tables.i dont know how to do that...Also i want to fetch few columns in a gridview from dataset table.I can't use ds.tables("student").select(name,roll)....
View 1 RepliesFor a WinForms VB.Net application, I use the Bindingsource's filtering capacity to filter data, which is seen in a DataGridview. The BindingSource is from a DataSet, created using the Designer, and the data comes from a Access DB, using JetEngine and .Net 3.5. So basically:
Datagridview.Datasource = xxBindingSource
xxBindingsource.Filter = "[extended filter string with multiple columns]"
This filtering works fine, however, now I included some extra columns in the DataGridView, which I'd like to filter on, too. Of course, when I feed the manually added columns to the Filter of the BindingSource, this doesn't work out.I've done some research, and was not able to find any way to use the BindingSource's filtering syntax on the DataGridview. I'd like to use this syntax though, as I designed quite a nice UserControl and class around it, to provide smooth, fast and simple filtering capabilities.
Q:how can i add columns dynamically to rdlc report from dataset in windows based.
View 1 RepliesI am having very odd behaviour from my compiler when i run my program, i have two practically identical snippets of code that are doing pretty much the same thing: both are populating nodes on a treeview using information from the treenode above but when the program runs one of the snippets tells me at runtime that something i have defined is nothing. [code] section and title are columns in a dataset defined by dtName that exists, and the where bit is refering to a column where the entries match the value assigned to volume. which is 1 in the first iteration.
View 2 RepliesI am using a Strongly Typed Dataset as DAL. I want to return a single column from my table for that i wrote the code as
SELECT DISTINCT Floor
FROM Room
WHERE (Building = @Building)
But when i previewed the data, it shows me all the columns of the table with Null Value and the column with primary key has -1 value. This condition raise an Exception when i link this query to a ComboBox ..
cmbFloor.DataSource = da.GetFloorByBuilding(cmbBuilding.Text)
cmbFloor.DisplayMember = "Floor"
Error: Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
How can i do a workaround for this? I two databases(.sdf). Database A has table A1 Database B has table A2 Table A1 is an exact duplicate of A2 minus 3 columns My dataset(.xsd) is based off of tableA2 in Database B. I can fill all my tableadapters in Database A and all info in table A1 using the dataset. My problem lies when I do TableAdapter.Update() for Table A1(Since the dataset has the 3 missing fields) it tries to update table A1 with info that isn't there and I get an error. How can I update table A1 and ignore the 3 missing columns using the single dataset? Or is TableAdapter.Update() designed to Update the Database with all columns found in the dataset ?
View 1 Repliesbuilder("Provider") = "Microsoft.Jet.OLEDB.4.0"
builder("Data Source") = IO.Path.GetDirectoryName(Me.OpenFileDialog1.FileName)
builder("extended properties") = "text;HDR=Yes;FMT=Delimited;"
I am using this to connect to a textfile database, but ti wont read over 256 columns like excel. Is there any kind of work around short of changing my database file which isnt an option
I'm trying to read in only the first 2 columns of a txt file into 2 lists but am having problems getting the split function working. When I read the file the first strfields = "5.000 300.000" and the second strfield falls over.
Samples text:
0.000 300.000
5.000 300.000
10.000 300.000
[Code].....
Essentially my program asks the user for their name and a number, and it stores both values in a text file. However, when retrieving the code from a particular line it cannot separate the number from the person's name.will I have to use a new line for every entry, or is there some way to tell my program to differentiate between columns in the code?
[code]....
I want a Database read only and shown up in a datagridveiw without the user being able to edit the data into a certain column.Example i have a Database:
*In my Column is "ID","Name"
*Then in my Rows is "Ryan",Mark"
How can i display these data into in datagridveiw.....Cause i want to create a displaying records in datagridveiw..