How to display Top 10 Records using DataView Or DataSet, Below is my code. I am using .net 2.0 and i don't want to Modified in my SQL query.
Dim ds As New DataSet
ds = tv.GetSearchLatestEvtHosting("", "", "", "", "")
Dim dtvCust As DataView = New DataView(ds.Tables(0))
I'm trying to filter a DataView to return all the rows whose column x starts with a number: The following works in SQL Server:
select *
from dbo.Page
where Name like '[0-9]%'
However, when I try this:
dataView = new DataView( someDataTable, "Name LIKE '[0-9]%'", "Name ASC", DataViewRowState.CurrentRows);
I get "invalid parameter [0-9] with Operator Like" error message. What is the correct syntax to achieve my goal?
To Add new row to a dataset table, I am using code below. Before adding this how do I check if that row has already been added to the dataset?
Example:
Dim newCustomersRow As DataRow = DataSet1.Tables("Customers").NewRow()
newCustomersRow("CustomerID") = "ALFKI"
newCustomersRow("CompanyName") = "Alfreds Futterkiste"
DataSet1.Tables("Customers").Rows.Add(newCustomersRow)
Note: The table I am dealing with does not contain a primary key!
DataView Dv = new DataView();
Dv = dts.DefaultView;
Dv.Sort = "ReportName";
dset = new DataSet();
DataTable datable = Dv.Table;
dset.Tables.Add(datable);
I convert dataview to datable and sorting.dataview sorting grid. But I covert dataview to dataset.not sorting in gridview...
converting a DataView to a DataSet?
I have a DataSet 'programs'. I want to sort if before passing it to a user control where it will be rendered.
I created the DataView and sorted it successfully like so:
[Code]....
The line of code to pass my old (unsorted) dataset to the UC is like this:
[Code]....
What is the syntax for passing the dvPrograms to the UC in a similar manner?
I need to retrieve data from DataView/DataTable. I need to retrieve the top4 records, then, 5th - 10th recoed.
This is how I do this, but I am looking for a clean code, doing it correctly:
[Code]....
I have a table that contains about 8000 records and I need to be able to select any given sequence of 250 subsequent rows by a specific row index of teh table...
how I can go about that easily using a dataview without building a secondary table and just pushing the records I need into it?
I have Dataset with Data table with unsorted record i used the RowFilter for Filtering the Record like below
DatasetStudent.Tables[0].DefaultView.Sort = "Column Name"
Now i have to Pass the Dataset DatasetStudent with sorted record to Report how i convert the default view to Dataset.
Is there a straightforward way to create a dataset after querying a dataview? The query itself returns DataRowView objects, which I cannot get to work with CopyToDataTable().
The query looks like:
Dim dvQueryView As DataViewdvQueryView = (dataview object of large dataset)
detailTableQuery = From rowView
As DataRowView
In dvQueryView _
Order
By sSortOrder _
Select rowView _
Skip nQuerySkipRow _
Take nQueryCountRows
I only want a small selection of records from the large dataview and use those to create a smaller dataset. The large dataset stays in place while multiple views are created from it, and then from those views I want to create the smaller datasets.
How to select top n rows from a datatable/dataview in asp.net.currently I am using the following code by passing the table and number of rows to get the records but is there a better way.
public DataTable SelectTopDataRow(DataTable dt, int count)
{
DataTable dtn = dt.Clone();
for (int i = 0; i < count; i++)
{
dtn.ImportRow(dt.Rows[i]);
}
return dtn;
}
I want to check that the row index I specify is below the row count so it doesn't throw the error
Index 2 is either negative or above rows count.
how would I achieve this with my code?
Using connection As New SqlConnection(connStr)
Dim command As New SqlCommand
command.Connection = connection
connection.Open()
Dim a As New SqlDataAdapter("SELECT top(3) name, (SELECT TOP (1) ImageId FROM Images WHERE(productid = products.Id)) AS imageId FROM Products WHERE beginnerdiscount = '1' ORDER BY Dateadded", connection)
Dim s As New DataSet()......
Today I am facing the problem with Typed DataSet using DataSet.XSd file, And How to fetch, Delete and Update the Database through Dataset.xsd file.
View 9 RepliesI have a json service method that returns an object with two properties. The first property is called Rows and contains the list of objects I want to bind to the dataview. The second property is TotalRowCount. It is a paging method. How can I tell the DataView to bind to the Rows property? This is what I have so far...
[code]....
I have written the following data binding code:
[Code]....
This is in the codebehind of a page containing a gridview. The gridview has been customized to include two hidden fields hfsearchtext and hfsort that are used to search my database table and return results to the gridview through the use of a DataView.
As I'm new to this type of construct, can someone walk me through the code above? I receive an error message stating that the Value of System.Web.UI.DataSourceSelectArguments cannot be converted to an integer. How to rectify this error?
how do i copy required row in dataset to a new dataset. i have bind a xml into a dataset and i need to display say row 3 to 5 only so i do a for loop but i have encounter problem when trying to copy the rows to a new dataset.
do i have to write the xml to datatable and bind it to dataset and from there copy over ?
I need to expose a Web service which will provide an array/DataTable of 20 rows (average) of data - certainly no more than 100 rows would ever be needed. The largest item in these rows would be a date.The Web service would be called by a separate Web site in order to display these 20 (approx.) rows in a GridView/DataView. I would have to be able to dynamically choose which domain to go to and find the Web service.I would possibly have to secure the Web service with a password but this is not vital (possibly with soap headers over https).
My question is what technologies should I use to create this Web service? I know enough about .asmx Web services to struggle through and get this working, but should I get a book on WCF and learn that instead?I use AJAX and jQuery so am also wondering if I should be using one of those client side, to call the Web service and populate the grid?
I am trying to do something I thought would be simple but something isn't working for me.
I have a DataTable that I need to sort by a price ascending, then select an 'nth' row value. The 'nth' value is the row count/10.
[Code]....
What happens is I get the "nth" value from the original tblDeals.
I got this error message when I use rowfilter
Line: 938 Error: Sys.WebForms.PageRequestManagerServerErrorException: Cannot perform '=' operation on System.Int32 and System.String.
My code is like this
[Code]....
When I check only string, it's okay
But I have to check string and int because some columns are only Integer such as LLMS_Id, Risk, RsidualRisk
I have a dataview on a page. I am binding a list of Items, and each item has a Person object. So I get this exception "field not found in selected datasource" when I try to bind to any property on the person object.
[Code]....
It appears that the dataview is having problems with the person object because it will display all the properties for the Item correctly.
why I get a not found on the boundfield and not on the eval?
I have one gridview and i want to take all the values in a datatable or dataview.
I tried like this
DataTable gridTable = (DataTable) dataGrid1.DataSource;
but gridTable is showing null, it should not show null because gridview has lot of records with 3 columns
Is there any way i can convert/store a gridview.Datasource records in a datatable or dataview?
I have one big DataTable with X rows. I want to select Y rows from it and bind them to a new ViewList. While doing it, I want to delete these rows from the DataTable (Having X - Y rows).
What is the best and fast way to do it?
I don't know if it is better to create a new DataTable to have the Y and after that bind them to a ViewList or something else?
I'm also looking for example in code how to select/delete rows from DataTable.
I am working a project, it requires me to select  everything from a table, one of the fields contains dates.  I have to take each take and add negative 6 months if the result equates to today's date then i add that row in the dataset to a listview else i remove that row from the dataset.
 The problem i am having is removing the entire row from the dataset before binding it to the listview.
I have a datatable with 50+ rows I want to get the Top 10 rows and display.
View 1 Replies[Code]....
In above query I want to have top 10 rows as well as count of all rows.
DataSet ds = new DataSet();
string qry = "select Name,Section,present from presentdays where id='" + TextBox1.Text;
qry += "'";
ds=mvl.GETDS(qry);
foreach (DataRow dr in ds.Tables[0].Rows)
{
TextBox2.Text = dr["present"].ToString();
TextBox12.Text=dr["Name"].ToString();
TextBox13.Text=dr["Section"].ToString();
}
there is no data in id='1'i need to throw the error as there is nothing is found in id='1'