Existed MyControl1.Controls.OfType<RadioButton>() searches only thru initial collection and do not enters to children.
Is it possible to find all child controls of specific type using Enumerable.OfType<T>() or LINQ without writing own recursive method? Like this.
I'm trying to follow the demo from this link to add a jqGrid to an MVC app.
I have a table named Companies that I'm trying to display in a grid. A Company simply contains an ID and a Name.
I'm running into an error in my controller function:
public JsonResult DynamicGridData(string sortIndex, string sortOrder, int page, int rows)
{
int pageIndex = Convert.ToInt32(page) - 1;
int pageSize = rows;
var companies = companiesRepository.Companies.OrderBy(sortIndex + " " + sortOrder).Skip(pageIndex * pageSize).Take(pageSize);
//Error here
...
}
I'm getting an error on the line that is calling OrderBy():
The type arguments for method 'System.Linq.Enumerable.OrderBy(System.Collections.Generic.IEnumerable, System.Func)' cannot be inferred from the usage. Try specifying the type arguments explicitly.
I really have no idea what the error means, and I haven't been able to find an explanation. I'm not sure what is causing this error on a simple OrderBy function.
I have a gridview with a nested placeholder in each rows. I nested some checkboxes in each placeholders in each rows dynamically, so their ServerIDs are not the same (I dont want to use nested gridview). at the end in a button event I want to count checked checkboxes in gridview while I can not use findcontrol() method in each rows to find checkboxes due to their different ServerIDs.
View 3 RepliesI have a table "OSTAN" with two columns "ID" (Key index) and "NAME". I am trying to construct a linq query to select the Name for a specific ID. I have not luck trying to construct the where clause. Here what I have so far:
using (XeledsEntities db = new XeledsEntities())
{
string SelectedName = db.Ostans.Name.Where( Ostan=> Ostan.Equals(Request.QueryString["Ostan"])).FirstOrDefault();
}
Can anybody construct this where clause to set the Selected Name?
The following code works fine for converting an XML data set to be enumerable for Linq.
'Query webservice for data
Dim propertyInfo As String = myService.GetProperty(userName, password, Acct)
' Create a new DataSet.
[code]...
However, it does not retain the xml tags in the Linq enumerablerable dataset ('newDataSet2"). I don't think I can rely on the array index order as being the same everytime, so this would obviously cause a problem if I'm trying to align the array items up to my database fields. How can I make newDataSet2 retain the XML tags (column headings) to insure I know what data field each array item belongs to?
I have an Interface that has its concrete class defined via a factory. Because of this I found no way to use the Interface tpye directly in my LINQ quesry so I had to use the concrete class types to creat a generic list. The LINQ query works but after calling.ToList() on the LINQ query result I get a List(of MyConcreteClass), but I need a List(of IMyConcreteClass). I have tried everything I can find: .Cast, Ctype, implicit casting, etc. but I always get back one of the (2) messages (depending on if I attempt to cast)message:
"Unable to cast object of type 'System.Collections.Generic.List`1[MyConcreteClass]' to type 'System.Collections.Generic.IEnumerable`1[IMyConcreteClass]'."
...or
"Unable to cast object of type '<CastIterator>d__aa`1[IMyConcreteClass]' to type 'System.Collections.Generic.List`1[MyConcreteClass]'."
Here is the sample code:
[Code]....
I have a treeview and all nodes are check box, when user clicks on a button, how can I get all the checked child nodes belongs to specific parent? I wanna something better...
private TreeNodeCollection GetCheckedNodeForParent (string parentNode)
{
TreeNodeCollection treeNodeCollection=new TreeNodeCollection();
foreach (TreeNode node in tvBaseline.FindNode(parentNode).ChildNodes)
{
if (node.Checked)
treeNodeCollection.Add(node);
}
return treeNodeCollection;
}
Im using Nested DataList in My Application. But i m not able to find control Inside Child DataList. (I want to Find Label Control In ItemDataBound Of ChildDataList)
View 3 RepliesI've got a nested gridview and I'm looking for a way to determine the number of rows in a child gridview, so far no luck. Has anyone come across a solution for this ? Both of these gridviews are bound using ObjectDataSource.
View 6 RepliesWe have a ASP.NET 3.5 application where we want each user to have their own database. Everyone uses the same web application, but the database their data is kept separate from all others. So every customer has his own database. All database structures are identical, so the only thing the application has to do is connect to the right one when the user logs in.
I envision that we look up a connectionstring to their data at the time they log in and set it globally for that session. With Linq, the connection is handled automatically though, in the background, based on the setting in the web.config file. Unlike SQL Server where you set it each time you use it, with Linq it is hidden in the .NET generated class files.
URL...
<asp:GridView ID="gvCustomers" runat="server" AutoGenerateColumns="false" CssClass="Grid"
onrowdatabound="gvCustomers_RowDataBound" Width="100%"
onrowcommand="gvCustomers_RowCommand" >
<RowStyle HorizontalAlign="Center" />
<AlternatingRowStyle HorizontalAlign="Center" />
<Columns>
<asp:TemplateField>
[code]....
and also i tried
GridView gvchild = e.Row.FindControl("gvOrders") as GridView; drplist = gvchild.FindControl("drp1") as DropDownList; // den also same error object reference not set to an instance of an obj
I have records in database as
hotelid amenitieid
17774 7585
15636 7585
25363 7585
36933 11236
21412 45696
23521 65474
15636 65474
21412 65474
now in above, if i want only those hotelid where amenityid is 7585 and amenityid is 65474 and not any else hotelid , then how to use select query in datatable in asp.net
If I have a linq query that creates the anonymous type below:
select new
{
lf.id,
lf.name
lf.desc,
plf.childId
};
Is it possible to assign a specific type to one of the members? Specifically I would like to make lf.id a null-able int rather than an int...
is it possible to use OFTYPE in where clause of an entitydatasource? I mean something like this:
srcUsers.Where = "OFTYPE(Doctor)";
How to find the control type in javasccript?. Say if i have an ASP.NET LinkButton and i wanna find control type from the javascript. How can i do that. I tried using typeof(), but it giving me an object back. and i tried
var control = document.getElementById(Id);//Id is the ClientId of the Linkbutton alert(control.type);//this is empty.
Is there a way to use linq to get a list of textboxes in a web page regardless of their position in the tree hierarchy or containers. So instead of looping through the ControlCollection of each container to find the textboxes, do the same thing in linq, maybe in a single linq statement?
View 2 RepliesI have to following Linq query, where I look for some different timestamps in an DB:
[Code]....
My problem is that I would like to filter the query, to only return entries, where OutOfOrderStart and OutOfOurderEnd is from the same row. How can I accomplish this?
I am trying to fill a gridview with the data from Product table selecting few columns . I am using 3 - tier architecture and in DAL getproduct(userid) I am writing the query but cannot figure out exactly how to get that working .. here is piece of method I wrote
public List<Project> GetProjectList(int ownerId)
the same problem wuit hme here I wanna to convert from IQureable<int> to int type?
View 2 RepliesCannot load linq-sql Data Context Type Error
[Code]....
I have the following:
[code]....
I keep getting this error:
Message = "The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value."
What i'm trying to do is group by ContentObjectId and then get StartDate that is greater than today.
I'm using entity framwork and MS SQL2008
Here Am Using This Query to
SELECT COLUMN_NAME
FROM INFORMATION_SCHEMA.COLUMNS
WHERE (TABLE_NAME = 'TableName')
But Am getting Total Records instead of i need Specific Columns.....
I'm iterating through a collection of asp:tablerows to be able to get or set the text in a textbox that is nested in the third cell of the row; I'm doing this by type rather than by ID because the cell ID's in that column aren't totally consistent--thus I can't really call FindControl() to achieve this. I've resorted to casting the third control in the TableRow to a TableCell and then Casting the first control in that cell to a TextBox. Not quite correct, as I'm getting an index out of range exception thrown. The problem mainly lies in the Controls.Count() property of the third cell, which comes to zero. Not sure if there's a better way to access the textbox---should I resort to FindControl()?
foreach (TableRow row in tblProviders.Rows) {
string value = ((TextBox)((TableCell)row.Controls(2)).Controls(0)).Text;
...
}
My searches here only yielded use of FindControl(), so that may be the only way...
I am developing a C# VS 2008 / SQL Server 2008 website. Although this same code compiles in the Project version, the website version does not compile. Many of their files are the same so I do not understand even where to look. The only compile error I get is:
Could not load type 'DataMatch'
in my DataMatch.aspx file. Is the problem in my web.config file? How do websites differ from projects in VS? All four of these files reside in same directory.
Default.aspx file:
<%@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="Default.aspx.cs"
Inherits="AddFileToSQL" Title="Untitled Page" %>
Default.aspx.cs file:
using System.Data.SqlClient;
using System.Security.Principal;
namespace AddFileToSQL
{
public partial class AddFileToSQL : System.Web.UI.Page
{
...
DataMatch.aspx file:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DataMatch.aspx.cs"
Inherits="DataMatch" %>
DataMatch.aspx.cs file:
using System.Web.UI.WebControls;
using AddFileToSQL;
public partial class DataMatch : AddFileToSQL
{
I wanted to delete the record from data but I receive this error "Unable to cast object of type 'System.Data.Linq.DataQuery`1[training_eval.Course]' to type 'training_eval.Course'.
Dim eval_sure = From ev In db.Evaluates Where ev.course_id = indexcourse Select ev.course_id
Dim del_course = From c In db.Courses Where c.Course_id = indexcourse
db.Courses.DeleteOnSubmit(del_course)
db.SubmitChanges()