I've built a User Control that contains a ListView. To make it work I need to pass to it a DataTable. The columns of this DataTable need to have particular names that match up with what the ListView is expecting. I have a large DataTable that I need to massage/convert over to this different format. To do that I need to filter out columns and rename the column names. The actual data in the DataTable doesn't need to change. Is there a good way to do this without actually instantiating a new DataTable and copying the data from the large DataTable into it?
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";
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:
MembershipUser m_user = Membership.GetUser(); DataTable dt = new DataTable(); dt.Columns.Add("SenderUser"); dt.Columns.Add("RcvUser"); dt.Columns.Add("Message"); foreach (ListItem li in lst_Users.Items) {
[Code] ....
I am calling "Application object" from above aspx page into web service page as below:
[WebMethod(EnableSession = true)] [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public string WebMessage() { List<string> list = new List<string>(); DataTable dt = ((DataTable)HttpContext.Current.Application["Message"]);
[Code] ....
I want to know that the approach im using in Web service page to fetch top 5 messages from Datatable is correct or not? How to do that without using LINQ as I am using framework 2.0 ...
I am doing GridView Sorting without ObjectDataSource. For this requirement I need to convert DataTable to DataView, I know I can do that in VS 2008 but How can I do this in VS 2005.
I would like to implement LINQ IN ASP.NET for filter required data from datatable. I have doubt that what is right place. I have following options
At presentation layer *.aspx.cs
At our Business layer.
At our Data base layer, where query for database happen which is return as a datatable to business layer. Business layer then return the result to presentation layer.right place for LINQ because now i have to further filter data from datatable as per user selecter filters.
Dim dt As New DataTable Dim da As New SqlDataAdapter(s, c)
c.Open() if Not IsNothing(da) Then da.Fill(dt)
[code]...
When I call da.fill I am inserting all records from my query. I was then hoping to filter them to display only those where the GroupingID is equal to 0. When I run the above code. I am presented with all the data, the filter did not work. Please can you tell me how to get this working correctly.
i have the dataset with one table.Table contains three column like 'Name','Location','Pin'.I would like to move the data from another table based on schema.
If I am passed a datatable and I cant change the column structure..is there anyway to set an existing column to a Primary key so I can easily Find() the row I am looking for?
im trying to copying specific record from one datatable to another datatable i used below code
public System.Data.DataTable selectspecificdatarow(System.Data.DataTable dtg, int count, int startindex) { System.Data.DataTable dtn = dtg.Clone(); for (int i =startindex; i < count; i++)
[Code]....
its taking too long time in cloneing is there any better way to do this task which is Time effecent
now when i type something in header Search cell , it shows the data of first page index only , it won't show me data from 2nd page index .. here's my code :
protected void PhasesTempGrid_OnDataBound(object sender, EventArgs e){ GridViewRow row = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal); for (int i = 0; i < PhasesTempGrid.Columns.Count - 1; i++) { TableHeaderCell cell = new TableHeaderCell(); TextBox txtSearch = new TextBox();
[Code] .....
My gridview is in update panel therefore i did this in .js script :
I have a gridview populated by a SQLDataSource that is fairly complicated on a dataset changing constantly. It takes a second or so to fetch the data.
I want to have external dropdownlists for filtering the data that appears in the gridview, either with a FilterExpression or with parameters.
The problem is that querying the database to populate the dropdownlists takes a long time, because of the complexity of the query. The values in the dropdowns can vary based on other filters.
Is there some simple way of querying the database only once, for the main gridview, and then somehow querying the local (to ASP.NET) copy of the data to extract distinct values for populating the filtering dropdowns? I am thinking this might speed things up a bit.
How to Filter Data/row from Repeater control in C.#Repeater control :---------------------All (15)shoes (3)shirts (12).Actually on click i want to filter data/row (posts) from Repeater control. Example: if i click on shoes 3 posts should display only but by default all 15 posts should display.
a simple way to filter SQL data when it is retrieved by a GridView control?
Among the various applications I need to create are selecting records based on user inputed criteria (via a DropDownList), and excluding records that have null values (which I need to allow in my database) in certain columns.
I have the web page that meet the problem. There exists a gridview and filtering. When Select all by using function A, it is OK. when Filter by using function B, it cannot filter and return no rows. When Select all again, it is OK. I have tested that function B can return the corrected filtered rows. But when databind in the web page, it cannot show and no error?
i have gridview and data already binded like this...
First Name Last Name Age Date
Qasim Nadeem 26 13/01/2010 Ali Ahmad 20 17/02/2010 Qadeer Numan 18 23/08/2010 Ahmad Asghar 20 23/08/2010 Mohammad Nadeem 26 13/01/2010
now i have One TextBox and four radio button like 1.rbFirstName,2.rbLastName,3.rbAge,4.rbDatemy requirment is if i select radiobutton first rbFirstname and i will enter a text into textbox than ONKEYUP filter the gridview data and show only those row where data is match in first coloum"First Name" and hide the rest of rows...same required for radiobutton 2,3 and 4 respectively in gridview 2nd ,3rd and 4th coloum....i need this solution in javascript or Jquery but i dont want reload the page...
i 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;
