Forms Data Controls :: Not Getting Filtered Results In Dropdownlists
Jul 22, 2010
am having three dropdownlists on my webform. On the based on their selection I am retriving records from a databas table. my code for retrieving records as follows.when I didnt select ant dropdownlist ans click the search button then it featch all records. but when i select an option from suppose i select from ddlDivision, even there is many records related to selected Division but it shows sorry no record found.
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Apr 22, 2010
I use a GridView control in my web part to display data from sql server. I use the filter in this GridView. Can I only get those rows that are filtered. If I use GridView.Rows, it returns all data it got, Not only the filtered data.
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Mar 7, 2011
I am working with GridView/TelerikGrid control. It is having filter option. When I filter the data,
I need to copy only filtered rows into Datatable for further processing.
Suppose I am having total 10,000 records. and when I filter on column say Dept="IT", I get 1000 records in grid. So these 1000 records only should get copied into Datatable. So How to achieve this ?
Cwhat can be done over this ? I tried number of properties for grid. But there is no property which will return fileterd data source. Also I am not able to go every page of Datagrid and collect the data. I can get data for first page only. If I need to collect the data by going to every page of gridview, what is the way for this ?
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Dec 14, 2010
My page has ListView with SqlDataSource. I set SqlDataSource as DataSet and EnableCaching = True.
BEFORE I filter SqlDataSource, I don't have problem to get the record value for selected record data in my ListView.
AFTER I filter SqlDataSource, my ListView can display the filter record data properly, but I have problem to get the record value for selected record data in my ListView. The record value for selected record data does not refer to the record value what I am selecting.
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Mar 22, 2010
'm using a gridview with paging and sorting in asp.net (language = VB).The gridview shows all the artists in my database. I've added a searchbox above my gridview, so users can search for certain artists by name.The search option works. If I enter the name: John --> it shows the artists who have the name John.Now for the problem:If the user filtered the gridview (for eample searching for John) and switches to another page of the gridview, the gridview is again filled with all the artists instead of the artists that are named John.
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Jan 30, 2011
i have the following code:
[Code]....
3 nested dropdownlists SELECTing from DB. So i select the brand, then i select the model and then i select the product and click on SEARCH button.
But when i select thebrand, and then the model, and if i want to change the brand, it does not reset the second and third dropdownlists.
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May 19, 2013
in my asp.net+access web code in vb. There is three labels named (tata.text,tvs.text,msu.text) is there any option on clicking on the label named tata.text the data pertaining to tata be displayed in a gridview in another page or a popup display in same page.
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Mar 3, 2011
In my scenerio, i've a dropdownlistbox by which i want to filter, a textbox for the text to filter and two textbox for specifying from and to date.
A gridview control for displaying the filtered data and a sqldatasource control and a commandbutton called search.
The following code is used to filter the data in database and it works properly. But when i click on edit in gridview, the gridview displays no records and again when i click on search button the data is displayed on the gridview displayed with the selected row in editmode.
protected void btnSearch_Click(object sender, EventArgs e)
{
string query;[code]....
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Jan 31, 2010
I can see the issue here but can't get my head around a dv and dv.Table unless I'm looking too deep into this.Essentially, I can't get AsEnumerable.Sum() on dv but on dv.Table but I need it on the filtered view (ie. dv).This is the framework the entire application is built on so I can't pass these parameters to the stored procedure! Well I could but cannot be bothered re-writing and testing eveyrthing!
[Code]....
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Feb 11, 2014
I am trying to export a gridview that is returned from a search form. The gridview also has paging enabled. When the searched records are found in gridview it is exporting all data.instead of exporting only the searched data.
How can I only export the records from the search results, but also the make sure the records on the different pages export also?
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Apr 13, 2010
I have a FormView in InsertItem that contains one DropDownList linked to a Table Datasource to display ItemCodes. In that "lookup" table I also have a Retail and Cost field.When the user selects the item from the drop down, how can I have these to field carry over into my new record that is being inserted. The new record also has a Retail and Cost field that are TextBoxes.Basically I am populating the new fields with the default values from the DropDownList.
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Jan 28, 2010
I need to filter data in a View using three dropdownlists that are populated independently of one another. The items in the second ddl are not based on the items in the first, etc. Each ddl is populated using its own sql statement. I want to be able to use each of these dropdownlists independently of the other two, but I want the data that is returned to be based on the values already in the other dropdownlists when I make a selection change.
For example: DDL1 is populated with Horsepower values from its own SQL statement.
DDL2 is populated with Gallons per Minute from its own SQL statement, unrelated to what is chosen in DDL1.
DDL3 is populated with Diameter values from its own SQL statement, unrelated to either of the other DDLs.
I want to be able to make a selection from any of the DDLs and filter data based on the selection, and whatever the current value is for the other two DDLs.
I'm coding in C# and I think I may need to create a delegate and an event to listen for when the SelectedIndexChanged event fires on any of the DDLs. This is slightly more complicated than anything I've coded up to this point, I'm a beginner, and I'm not even sure I'm aiming in the right direction for a solution.
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Jun 9, 2010
I want to filter my gridview using two parameters that come from Dropdownlists. I bind these drops with two linq queries and next I would like to filter my gridview with query that has two parameters that comes from selected values from those drops. Everything is inserted in UpdatePanel. Here is my code:
asp:UpdatePanel
ID="UpdatePanel1"
runat="server"
>
[Code]....
I don't know how to get selectedvalues from dropdownlist and pass them to Bind() function which binds grid view
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Jan 5, 2010
I have a gridview that is currently showing 20 lines per page. Each line has several fields in it, three of which are dropdownlists. These dropdownlists are populated with a SQLDataSource and then the selected value is bound to one of the gridview datalements.
The problem I'm running into is that the page is very slow to load. I believe this is because of the large dropdownlists (and possibly because there are roughly 60 of them, each of which is executing a SQL query to populate the list of available values). The file size that is being transmitted over the web is just over 1.25MB in size, again from the large amounts of data in the dropdownlists.
Is anyone aware of a technique by which I could only execute the query from the SQLDataSources that populate the dropdownlists' available values once and then reuse the results of that query to populate the relevant dropdowns? Ideally I would do this on the client side so it would also limit the amount of text being transmitted to the client browser.
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Feb 15, 2010
I have two DropDownLists, and each one has a Control Parameter that references the other.
The idea is that if you select a value in either one of them, it restricts the possible values you can select in the other. And the user may select either one of them first.
Each one has an "All" option for selecting all values. (They are both used to restrict rows that populate a GridView).
This is all done using SQLDataSources.
The problem is that it doesn't seem to work at all. Both DropDownLists are empty, and the SQL that populates them never hits the SQL Server. But there is no error displayed.
If I have it going only one way, it does work, so I think the problem is the recursive nature of having them reference each other.
It would seem to be quite a common requirement, so its there any way of getting this to work?
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Jan 27, 2011
I have a gridview with 4 dropdownlists and 1 label in each row. Suppose , text fields of each dropdownlists are a,b,c and value fields are 1,2,3 respectively.
In each row,label text is the sum of value fields of selected text fields of 4 dropdownlist.
For example,If selected text of 4 dropdownlists of a row are-b,a,b,c.
Then the label text of that row will be 8.(value field of b=2,a=1,c=3 , so b+a+b+c=8)
Whenever the selected text of any dropdownlist changes,corresponding label field also will change.
How can we do this in asp.net with C#?
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Jul 28, 2010
I'm comfortable populating dropdownlists in a standard webform, but I seem to be having trouble populating them from within a gridview or listview.I know that I'll probably need to use the find control method, I've had a stab at it with the following:
[Code]....
The purpose of this is to allow someone to look at a bunch of records, and in a dropdownlist add an item to a group, but this "group" is in a separate table, so I want to take whatever value that select in the dropdown menu, lookup their user id, and add both bits of information to the other table, so it's technically not even editing, even though i suspect I'll need to use the edititem template?
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Sep 10, 2010
Here is the case:
I use Visual Studio 2008 ASP.NET 3.5
I have a DetailsView control with several fields that is in insert mode. Three of them are the source of my problems and headaches.
I have three DropDownLists in template fields.
The first one is OK, bound to it's designated field in table1 in the database. The next two however have to change their bound tables according to the SelectedValue.
So far, I've managed to get it working, BUT when I insert the data I've entered, these two DropDownLists are not entered into the database.
DropDownList3 - the list that controls the other two DDLs
DropDownList4 and DropDownList5 - the list that need to change their items accordingly
DropDownList3 has six different values, so I have 6 tables for each of the other two DDLs
However I have only tried with one to see if it would work, that's why the Sub seems incomplete.
Here is the relevant part of the code:
[Code]....
And the DropDownList3_SelectedIndexChanged sub:
[Code]....
If I leave SelectedValue='<%# Bind("shelves") %>' and SelectedValue='<%# Bind("type") %>' in the <asp:DropDownList> tag of the two DDLs that change values, I get an error when the first one does the postback.
The error is:
Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control. This error, I spent a whole day looking through forums and knowledge bases, but I could find nothing that solves my problem. Maybe the problem is me, but my boss wants this done, despite it is not my area of expertise to write code.
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Oct 15, 2010
On one of my pages I display a Gridview. This contains a list of questions generated by a SQLDataSource, with a dropdownlist on each row containing the answers for that question. The answer values can be different depending on the question, so I populate them in the RowDataBound event for the gridview, using question information.
As the list of questions is longer than the page I have placed the gridview within a Div which allows me to use scrollbars to navigate the gridview. I also use some methods to preserve the location of the last question answered - so that on answering a question, the gridview does not reset to show the first part of the gridview.
This works fine for IE7, which is what I have been using for the development, and which part of my customer base uses. However, the other part of my customer base uses IE6, which causes a problem.
When an IE6 user attempts to answer some questions, they run into issues. Should they scroll down the gridview, when they select a value from a dropdownlist (Effectively, when they answer a question), there is a postback and all of the visible (i.e. onscreen) dropdownlists appear to be cleared. However, on mousing over any of the dropdownlists, their value is then shown. On using either the scrollbar, or on using the mousewheel to scroll the gridview, all the dropdownlists are 'refreshed' and their values are shown.
At no point does the application appear to lose the data, it is just not showing it until there is a mouseover or the gridview is refreshed. Another odd aspect of this is that this does not apply to the first 5 rows of the Gridview. Any of these can be altered without there being this display issue. Should the gridview be scrolled enough to show some of the first 5 rows and some subsequent rows, only the subsequent rows will have this display issue.
I have tried various things to correct this - originally I called my retrievescrollposition method on the SelectedIndexChanged event of the dropdownlist, but have since moved it to Page_Load as the Else branch of if (!IsPostBack). I tried rebinding the DropDownlist in the SelectedIndexChanged event, but this only helped with the Question I was answering - the display of any other onscreen questions was still affected.
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Mar 11, 2010
I have got 2 Drop Down Lists on my Form and 1 GridView. I want GridView to display the data according to selection from the Drop Down Lists.
For Example, One Drop Down List contains Names and other contains Dates. Both the Drop Down Lists can post back. So if i select a name from 1st Drop Down list, the Grid View should show all the results according to that Name. Similarly if i select the Date from the other Drop Down List , the Grid View should show the results according to the dates. But i cant figure out as how to bind Grid View to respond to 2 Drop Down List.
BTW i am binding both the Drop Down Lists and the Grid View to the DataSource Objects, which is getting data from the database.
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Oct 20, 2010
I am filling a gridview with data.
column 1 is a dropdownlist <ddlGrade>
column 2 is a checkbox <cbxNeverAttended> not visible
column 3 is a textbox <tbxLastDate> not visible
in the 'GridView_RowDataBound'
i determine if a ddlGrade value already exists and if so, make it selected in the dropdownlist
also, if the value of ddlGrade is a "U" I make cbxNeverAttended and tbxLastDate visible
However, if cbxNeverAttended or tbxLastDate are both empty strings (and ddlGrade has the value "U"), I want to disable all instances of ddlGrade in the gridview (essentially forcing the user to enter a value for cbxNeverAttended or tbxLastDate before moving on to enter another ddlGrade).
But I have been unable to figure out a way to accomplish this on the 'Gridview_RowDataBound',
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Jul 12, 2010
I have two dropdownlists and one datagrid...I want to bring data from dropdownlists to grid.After selecting items in both the dropdownlists , I want to add the two selected items from dropdownlists in a datagrid row in two diffrent columns.And I want to add next selected data from the two dropdownlists to the second row of grid and so on.
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Dec 4, 2010
I've got 3 SqlDataSource controls, and 2 dropdownlists and 1 detailsview on a page. The first SqlDataSource is associated with the first dropdownlist, and second SqlDataSource (which is filtered based upon the selection chosen in the first dropdownlist) is associated with the second dropdownlist and the third SqlDataSource (which is filtered both by the selection of the first dropdownlist and the second dropdownlist) is associated with the detailsview. The idea is the user selects something in the first dropdownlist, and it is supposed to update what is returned by the second SqlDataSource control and second dropdownlist, and that in turn is supposed to change what is returned in the third SqlDataSource control and it's associated detailsview. All of the dropdownlists have AutoPostback set to True.
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Jul 29, 2010
I've currently got a form with two dropdown boxes on, and an XML file sitting on the site.
My two drop down boxes are Location and Date and what i'm trying to do it get the Location box to filter the XML and put the dates in the Date dropdown box.
I'm using C#.
Unfortunatly, its not working.
My code is:
[Code]....
and my XML is like this:
[Code]....
why my dropdown boxes are not being populated?
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Sep 20, 2010
I have zero experience with LINQ but had occasion to use it today. I implemented a working solution but do have a question.First, let me provide the background:I have 20 large web pages that altogether have several hundred data input controls on them. There are strong similarities between how each type of control is handled. Rather than wire up each control individually (ie. hard code it in the layout page)
foreach (View view in multiView.Controls)
foreach (Control ctrl in view.Controls)
switch (ctrl.GetType().Name)
case "DropDownList":
DropDownList ddList = (DropDownList)ctrl;
[code]...
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