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'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?
i could bind the data form tables to dropdownlist in asp .net using linq.
ex:
var res=from n in dc. contacts where n.location==Hyd select new{n.Id,n.Name};
var res1=from n in dc. Morecontacts where n.location==Hyd select new{n.Id,n.Name};
dropdown1.Datasouce=res;
dropdown1.DataTextField="Name";
dropdown1.DataValueField="Id";
[CODE]...
I have a ListView with Checkbox. My requirement is - When I click on any checkbox then it should return all the columns values of that row on behalf of that CheckBox. After much study I came to know that using DataTable and DataRow I can get all data of particular ID of a Row. But I am unable to work with this. My code is something like below:
DataTable dt=new DataTable();
dt=objBAL.Get_ShoppingCartData();
ListView1.DataSource=dt.Tables[0];
[Code].....
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;
}
A dataview is throwing an out of range exception when a page submit button is clicked. The strange part is if you change the data in the dataview by selecting a different person in the DDL the page works fine. Its only when the page loads and the default person in the DDL is when the DataView throws the exception.
The exception is thrown on the last line when I add DV.Rows(0).Cells(1).Text to the id_num parameter. I know there is a value in the dataview because it is displayed on the page. I can refresh the dataview with another person's information and the code works fine. This really has me confused. Here is a bit of the code behind.
Dim dashDataSource
As
New
SqlDataSource()
dashDataSource.ConnectionString =
ConfigurationManager.ConnectionStrings("SSSConnectionString2").ToString()
dashDataSource.InsertCommandType =
SqlDataSourceCommandType.Text
dashDataSource.InsertCommand =
"INSERT INTO tblAcadReferrals(all columns and parameter info here)"
dashDataSourceInsertParameters.Add("id_num", DV.Rows(0).Cells(1).Text)
How do i filter an xml document and only get the rows I need. example in VB.NET with xml file and aspx page.
I want the filter rows binded to a gridview control.
I have a gridview with a Date column showing (month/day/year), I would like use a dropdownlist with items in Month to filter the Gridview rows.
View 5 RepliesI have used this gridview in my project nad its working fine.
View 2 RepliesI have simple SQL DB with invoice informations (i.e. invoice date, client info etc.). I'd like to use 'selecteddates' from the Calendar control to show the invoice information in a gridview with the invoice dates which are in the 'selecteddates' group.
View 1 RepliesI came across a situation where a user selects no of rows from dropdown , depending upon the user input, automatically that no of editable rows should appear to input data...(maximum 8 rows only)
View 1 RepliesI have a dropdownlist with multi-select which I am using to filter a gridview. My problem is it only uses the first selected item for filter.
If I select one works fine, if I select 2 items the grid is filtered by the first item selected.
[Code]....
In my access datasource, I have set the selectcommand to what the user desires via a DDL. So the user chooses say, all names beginning with "B". But as soon as user clicks to page to the next page, the filter is gone. What is the way to preserve the filter. I have only merely rebound the gridview in the Pageindexchanging event which obviously is not doing the trick. Does this call for a session var to hold the users choice?
View 8 Repliesi need to Filter and display Google Map Markers from database based on DropDownList selection. for that I need to pass the selected value of DropDownList to the query.What should i do in the following code to do the above task?
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
[code]...
[code].....
why when I selected button select then it show index equal -1 in gridview ?
I have the following problem, i am using gridview to display some table info,, and during RowDataBound event i am binding another DataList control placed on gridview template column,,, the problem is that the DataBind() event of the gridview gives "Index 1 is either negative or above rows count." error.
I debugged alot,, when you disable the DataList binding it works,, but why the 2 not working together i dont know!!.
Below my Code in
Code Behind:
using System;
I have a gridview with paging. I have a style set for a selected row (highlights the row in light orange). What i would like to do is that each time a user chamges the page, the selectedIndex & selectedRow automatically becomes the 1st row of the selected page. So i would like to see the orange highlight on the 1st row of the page to indicate that the row has been selected.
I have tried GridView1.SelectedIndex=0 but this only seems to select the index of the 1st record in the whole datagrid. Does anyone know of how to set the 1st row of the page to the selected row each time the pageindex is changed?
I've implemented a ListView to display selected data from a DataTable. My listview is one row high and 4 columns wide. I've setup a DataPager to the left of it and another to the right to allow the user to access any item in the ListView.My problem is simple: When the user adds a new item to the DataTable, I rebind the data again { e.g. listView1.DataBind() }, and then I proceed to select that newly added item. BUT no matter what I try, nothing works! More precisely, I do this: listView1.SelectedIndex = #; where "#" is the appropriate index number.
View 8 RepliesLinkButton A
LinkButton B
A B C D E
-----------------------------------------
EmpID EmpName
1 Aakash
2 Ajit
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 trying this solution in visual basic but it dosent work, im getting a error:
RegisterForEventValidation can only be called during Render();
In the line:Dim script As String = Me.ClientScript.GetPostBackClientHyperlink(btn, "", True)
[Code]....
What I want is to filter the dataview so I get top 10.
I googled it and found out that I had first to sort the dataview. Then add a column (int) to datatable. This column I then made a AutoIncrement on......
This works fine - I can see in the codebehind that it adds a column to the datatable that I called AutoInc.
Then make a RowFilter on the dataview - here it goes "wrong" for me.....
When using the line
datVie.RowFiler = "AutoInc < 11";
and bind it to a gridview I don't get a error - but it also don't show me any rows in the gridview...... If I comment the line out - I get all the rows in the dataview..
Can anyone see in my below code what is wrong?
[Code]....
I have a gridview with id , name ,age, DOJ
if the DOJ will reach the today date that corresponding row can remove from grid automatically but only in grid and not from the database
I am using grid view with row "data bound event" at row row data bound i am using some function with loops to fill drop down of grid view in template columns. grid view gets populated with selected index change event of drop down. my problem is the asp.net page is getting slower i mean when grid populates its taking some time and some time page get hanged what to do to get rid of it?
View 1 Replies