Web Forms :: How To Bind Distinct Values To DropDownList From DataSet

Oct 6, 2010

I'm trying to bind a dataset (where the data is coming from a webservice) to a dropdownlist; the problem is that I'm getting duplicates in the list... how can I display distinct values only:


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Web Forms :: Distinct Values In DropdownList?

Jul 15, 2010

i'm binding data to ddl from database.i'm selecting one column from database table to bind.In that column there may be items with same name.but when selecting in ddl there must be no same values.

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Web Forms :: Bind Dropdownlist Text Value To Dataset, But Populate The Value Based On Number Of Items

Mar 7, 2011

I need to bind my dropdownlist to my dataset that is returning application specific text values. But for purposes on that page, i need to assign the value to each one starting at 0 to the number of items returned from my dataset..

Example, if my dataset only returns 1 item, the value of that item needs to be 0


If my dataset returns 4 items, the value of those items needs to be 0 thru 3


Is it possible to assign values like that to a dropdownlist from the code behind?

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Forms Data Controls :: Bind Data From DataSet (DataTable) To A Selectrow DropDownList In GridView?

Nov 19, 2010

I have a Gridview and two link button in that GridView , one link button click is to add edit row ( Edit ), one link button click is to select row ( Select ). I have a dropdownlist inside row which selected when i click link button Select in the gridview edit template, as of my business logic i need to show the dropdownlist only when the user clicks Edit button and when the user clicks Select button . That mean when the user clicks Select button then they clicks Edit button on the gridvview i should allow him to edit the dropdownlist (showing the value to the user through a label).


[Code].... C#

When I click Select link button , then I click Edit link button . They have errors : Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index" I don't know what error?. How to fix it

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Way To Bind Values With Dropdownlist

Apr 28, 2010

binding values with dropdownlist.i have one dropdownlist name,dropdowndiagnosticcategory..i have made one function bind_category() for binding the category values.The code for binding the values with dropdownlist is as under,here

private void bind_category()
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MVC :: How To Bind Values To Dropdownlist

Aug 25, 2010

I'm using asp.net MVC 2.0, my controller coding is,


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Forms Data Controls :: How To Add Lookup Table Values To A DropDownList And Bind To A FKValue In The Grid

Jan 26, 2011

I have a GridView control that has a SQLDataSource.

The GridView provides me with a list of musical artists (from the tblArtists)

In the Grid, I have a field, FKGenreID, that is a Foreign Key value for music Genres.

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Now the tricky part is that if the GridView field (FKGenreID) has a value, then I'd like the corresponding Genre Description to be displayed in the DropDownList

Alternately, if there is no value for FKGenreID in the GridView, then I'd like the DropDownList to show that nothing was selected, but have the list of Genres available.

Most importantly here, when the user makes a selection, I'd like the GenreID (from the DropDownList) to be entered into the FKGenreID field in the GridView field.

My thought is that a gridview record may or may not have a value in the FKGenreID field. Either way, the DropDownList is bound to that field. The DropDownList would display a list ofGenre Descriptions for the user to select from. Upon selection, the GenreID column of the DropDownList becomes the value in for the FKGenreID field in the GridView.

Is this possible?

In case it matters, I'm using ASP.NET 4, Visual Studio 2010, and coding in VB

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Aug 20, 2010

I have one drodownlist which show data based om textbox values...

Let us consider i have Select Name from table1 where Type IN(@typ) here @typ is textbox values here for example textbox will have some thing like this L1,L2,L3.. How to filter Name based and shown in drodownlist based on this L1,L2,L3(on textbox)..

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VS 2010 - How To Bind Values From Column A In Excel To DropdownList

Apr 7, 2012

How do I bind data from an Excel file named Book1.xlsx in Column A to a dropdownlist? I've tried like this:

cmdExcel.CommandText = "SELECT distinct BCName From [Sheet1$] where BCName <> '' and ProjectName like 'Total%';"
oda.SelectCommand = cmdExcel
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Feb 4, 2011

I have one table(tableName is getDetails and having three column ID, Name, City)

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Jan 17, 2011

Here's my current table data.

AccountNumber Product
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00505871 Product1,Product2,Product3,
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Sep 21, 2010

I have a datatable dt with 4 columns. I want to retrieve only distinct values from column1 of datatable.

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ADO.NET :: How To Return DISTINCT Values Of Person.ID

Oct 31, 2010

This is my query

Dim s_Person = From Person In db.People Join ProspectStatus In db.ProspectStatus On Person.Id Equals ProspectStatus.Prospect_ID Where (Person.Organization_ID = s_Organization_ID)Select Person.

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ADO.NET :: Linq To Sql Using Distinct On Individual Values?

Jul 29, 2010

I have a database that is filled with documents. In the database there is the documents id, name and version. Two documents can have the same name and id but are seperated by different versions.For instance there can be two entries, id: A44, name: Dilbert was here. But they are version A and B.When retrieving these to a listview I wish to limit the documents shown to only one version. Doing so means that I am only to show one document with the same id. I only get the id and name to show in the listview so I thought that distinct might do the trick. But since the name can change throughout different versions this was no good.Basically I wish to retrieve all documents but with distinct id. How do I achieve this?

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Linq To DataTable Not Producing Distinct Values?

Oct 19, 2010

I have a datatable which has been dynamically generated from FoxPro tables using a UNION Select statement. e.g.


This produces a datatable with about 100 rows, each containing many fields, one of which is c_olor. From this datatable, I would like to select the distinct colors and then output in a dropdown.

I have a public class Color which just has one property which I can then use as the DataTextField and DataValueField for the dropdownlist


However this never results in the distinct colors.

I have searched and searched for what I am looking for, and this seems to be one of the methods to produce a distinct set of results, but this and the others do not work.

My reasoning behind getting the colors this way, is that I need to get various other distinct values from the same UNION SELECT datasource, so would just do one DB call, cache the results, and then just used this cached datasource to retrieve all my distinct values.

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I have a table 'tbl' and a column 'col'. The elements are like 1,1,2,2,2,3,4,4. Now I want to show two columns one is the one will contain the distinct values from 'col' like 1,2,3,4.... and second will contain the count for each of them like for above case it will be 2,3,1,2.

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I have distinct value combinations of two values.i cannot achive in sql why beacause ,here crystal report having grouping options and output will going to print in a foote..

Sample format crystale report

SNo Name TranID
1 Guru 18
2 Inbaa 19
3 Guru 20
4 Inbaa 19
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Name inbaa with Tran ID 19 is duplicate ..

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Forms Data Controls :: How To Extract Value From A Dropdownlist After Bind 7 Column Name In A Dropdownlist

Mar 29, 2011

I have a table and 7 column name.

I bind the 7 column name in one dropdownlist.

Now the problem is,how do I extract the data value in a dropdownlist?

For example,

Dropdownlist contain 7 column name








when I click the subject_name,I want it to appear in a gridview



Below is my current codes which I have a problem.

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
SqlConnection conn = new SqlConnection("Data Source= EN\SQLEXPRESS;" + "Initial Catalog=ms;Integrated Security=SSPI");
SqlDataAdapter adapSel;
string mySQL = "SELECT '" + dd_list.SelectedValue+ "' FROM examtimetable ";
adapSel = new SqlDataAdapter(mySQL, conn);
DataSet dsSel = new DataSet();
GridView1.DataSource = dsSel;
Previously I have bind 7 column name in my dropdownlist
protected void Page_Load(object sender, EventArgs e)
if (Page.IsPostBack == false)
SqlConnection conn = new SqlConnection("Data Source= EN\SQLEXPRESS;" + "Initial Catalog=ms;Integrated Security=SSPI");
SqlCommand sqlCmd = new SqlCommand("select column_name from information_schema.columns where table_name='examtimetable' and COLUMN_NAME not like '%ID'", conn);
SqlDataReader ds;
ds = sqlCmd.ExecuteReader();
dd_list.DataSource = ds;
dd_list.DataTextField = "Column_Name";
dd_list.DataValueField = "Column_Name";
dd_list.Items.Insert(0, "Select Option");

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SQL Server :: Query To Return Conditional Counts Both Distinct And Non Distinct?

Sep 30, 2010

I have the following table structure:


The following query returns the default recordset:


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Web Forms :: Nested Dropdownlist Ondatabound => Bind Other Dropdownlist Fail

Dec 9, 2010

I have a gridview with 3 nested dropdownlists in one cell on edit like this:To get the exact fields when the user clicks on edit I used the following code(yes it's messy)


The BLLOnderhoud is a class and the getReserveInfo is used to get the Model - Brand(merk) Information.Since the dropdownlists are nested in the gridview I can't call them directly and they can't call any of my functions.And this is the problem, when I change the dropdownfield Model the Auto field wich is the last dropdown(in the picture is a typo) should be binded like in the following code:


But the dropdownlist onDataBound event can't call any of my functions that are in my class.So my question is how can the onDataBound event of the second dropbox trigger a function? The only thing that the function has to do is to bind the 3rd dropdownlist

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ADO.NET :: Fetching Only Distinct Values Of Particular Column To Assign To Dropdown List?

Nov 19, 2010

As I kept my fetched datatables into session and accessing it on another page there I am

wroking on datatable to fetch only distinct values of particular column to assign to dropdown list.

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