DataSource Controls :: SQL Data Missing From DropDownList
Jan 5, 2010
I'm using a SP to fill the drop down list and when I look at the values in the drop down list the first row of the dataset is missing.Here's the code I'm using, I've left out the database connection info and the link to the SP
StaffListRS = cmdStaff.ExecuteReader()
If StaffListRS.Read() Then
ddlStaffList.Datasource = StaffListRS
ddlStaffList.DataTextField = "StaffName"
ddlStaffList.DataValueField = "NewStaffID"
ddlStaffList.DataBind()
ddlStaffList.Items.Insert(0, New ListItem("All", 0)
If
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Aug 10, 2010
So I have a dropdownlist and I'm trying to populate it with values in the database. For some reason, half of the rows has no value. It's happenning in a sequence as well, like the first row has no value, then the second row has value, then the third hasno value....
Does any one know why it does this?
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May 31, 2010
I have one table it's contain multiple columns and one of them is
[Call_Ref_No] [numeric](18, 0) IDENTITY(1,1) NOT NULL
In this column I am facing issue is some time its missing the identity value... For example
1
2
3
5
6
8
9
Here in this example 4 and 7 is missing...I could not able to find these two reference in my table so what I can do? How I can stop this occurrence.
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Apr 19, 2012
I have 5 dropdown list (sector-country-year-project code-project title) so what i need is when i select specific sector for example education , the rest of the label should show me the only data related to the sector education in dropdown list. the same with other if i select year 2011 should show me in other dropdown list just the data related to year 2011.
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Nov 15, 2010
i use 2 dropdownlist with 2 object data source first dropdownlist to display departments name using object datasource (field to display DeptName , value of field DeptID)
second dropdownlist to display Employee name but depend on departments (field to display EmpName , value of field EmpID)
how to display employee name in dropdownlist depend on departments name in the other dropdownlist
2 tables
1 table deprtments with column (DeptID , DeptName , DeptDescription)
2 table Employee with column (EmpID , DeptID , EmpName)
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Jun 10, 2010
i think i can't see the forrest for the trees.......there HAS to be a simple way to do this. so i created a web page and on that page i have two dropdown lists. the first is STATE and the second is COUNTY. the STATE is a static list. but the COUNTY is generated whenever the STATE changes. now....when i set up the COUNTY dropdown list, it prompted me for a datasource. i have a store procedure which takes the 2-letter STATE code and returns all the counties for that state. so i set up the datasource for the COUNTY drop down list by just following the prompts from visual studio. i gave it a default state of Alabama (AL). and all is fine. so here's my question: how can i reload the datasource and subsequently the COUNTY dropdown list? i see no way to access the datasource that the environment generated for me.
well.....i thought.......i'll just do it the old fashioned way and set up a command.......connectionstring.......and sql statement and load the results into a datareader (do i REALLY have to do all that?)
but it still doesn't work. what's the simplest way for me to just re-fire my stored procedure and pass it the STATE parameter and reload the datasource and dropdown list?
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Jan 8, 2010
I have several dropdownlists which are databound to a SQL DB but I am also needing to add 2 items to them. I am using the code below.
With the code in the Calendar1_SelectionChanged sub (Which is when I want it to fire) It loads the data from the sql but not the static content
If I move the code to the Page_Load sub and add "If Page.IsPostBack Then" then it loads the static content but not the SQL.
[Code]....
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Jul 13, 2010
I have a problem with connecting a DropDownList to a DataSource.
The scenario: When I add am item to the database (I do this using a GridView/ObjectDataSource / SPROC) I want to update a DropDownList that lists this items as well.This DropDownList is linked with another ObjectDataSource. Now, I listen to the RowCommand event of the GridView and in a certain case I refresh the DataSource of the DrpoDownList and do a DataBind to the DropDownList afterwards.
The strange thing is, that when I take a look at the DropDownList's Items-Collection during the Page's OnPreRender event handling, the items collection contains the new entry but the new entry is not rendered, i.e. when I take a look at the rendered HTML the <option></option> entry for the new value is missing.
After another postback to the page the entry appears in the DropDownList?
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Oct 27, 2010
i am a new user of asp.net and i am a learner so i just want to connect two dropdownlist to data souce and i want that the list item of second dropdown is changed according to change of selected item of first dropdown.
i have connect it to data source successfully it getting chaged items but it happance only when its load then if i select the next item of first one it would not work properly.
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Jun 10, 2010
I am trying to use a datasource with a dropdownlist. Eventually, my data source method to call a stored procedure and load the datatable is returns, but for now, I am just creating the datatable manually. I need each item to have two attributes, the text, whixh the user will see in the DDL, and the value that the program will retrieve from and store back to the file.
It is partly working in that the DDL has 3 items, however the text for each item reads "System.Data.DataRowView"
I have to be close, but I can't figure out what I am doing wrong.
[Code]....
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Sep 8, 2010
I have a Dropdownlist in an itemTemplate in a gridview. My gridView binds to dataTable1 (from which the selected value for dropdown comes from) and dropDown binds to dataTable2 (i need to get DataValueField and DataTextField from here).
[Code]....
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Sep 8, 2010
I am using a DataGridView and have a master table which contains values which different tables related to the master data, i.e. StatusID =1 in master table = TrailerStatus (1, 2, 3, 4 and their descriptions) are in a related table. I am able to retrieve the values from Table B 1 = Empty, 2 = Rejected, 3 = Onsite, etc. However, I don't know how to relate the master table StatusID = 1 to default my dropdown list from the relational table 1, 2, 3, 4.
I have been fighting with this for quite some time and just have not found a solid example of how to do this. I actually have two dropdownlists which will need to be correctly wired in order for my application to work.
This will also be an editable dataGridView but I will tackle that challenge once I get this first hair plucked from my butt.
There is some code-behind which doesn't work at all pertaining to a ;; gvSCACDetail_RowDataBound ;;
but I dont' think I can even get the code to compoile when this is not commented out.
Here are some of the details:
<td style="width: 700px; height: 20px">
<asp:GridView ID="gvSCACDetail" runat="server" AutoGenerateColumns="False" AutoGenerateEditButton="True" DataKeyNames="trailerid,locationid,scacid,statusid,capacityid" AutoGenerateDeleteButton="True" DataSourceID="SCACDetailView" Visible="False" Width="698px">
<PagerStyle CssClass="centerh" HorizontalAlign="Center" />
[Code]....
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Jun 2, 2010
I have confusion, how can i retrieve value from database and show it in dropdownlist because valuse is store in various field with some are blank means null value, I want to display only fields with some have data . i am doing like this but what to mention in "valuefield and textfield" and how to implement.
con.Open();
OleDbCommand cmd1 = new OleDbCommand("select Restaurant,Parking,Facilities_for_Disabled,Room_Service,Bar_Pub,Fitness_Center_Gym,Swimming_Pool,Spa,Conferen
[code]...
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Mar 1, 2011
Maybe I'm losing my mind - I thought this was straight forward.
ListCode.DataTextField = "code_desc";
ListCode.DataValueField = "code_id";
ListCode.DataSource = Foo.GetCodes();
ListCode.DataBind();
The selection mode is set to multipls and all is good, about 50 items with appropriate values displays. Then I select 5 items and submit the form.
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Jun 3, 2010
I want to retrieve data from various column,which may some have blank value, so my problem is i want to retrieve only filled column(not any blank column) from multiple column.. I am doing this (given below) but it didn't return anything...
Column Name Value
Restaurant Restaurant
Spa Spa
Parking
Bar_Pub
Fitness_Center_Gym Fitness_Center_Gym
OleDbCommand cmd1 = new OleDbCommand("select nID Restaurant+''+Spa+''+Parking+''+Bar_Pub+''+Fitness_Center_Gym AS Facility from add_property where ncity='" + DropDownList1.SelectedItem.Text + "'", con);
DropDownList2.DataValueField = "nID";
DropDownList2.DataTextField = "Facility";
DropDownList2.DataBind();
con.Close();
--------------------------------------
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May 9, 2010
Stuck trying to populate a dropdownlist with an ObjectDataSource using the wizard.
using the wizard i can successfully configure the datasource, then I can choose the datasource. The next step you should be able to select your display value and the selected value. However, these boxes are not populated within the wizard. I added a gridview to test the datasource and it displays fine.
[Code]....
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Mar 2, 2011
I have two embedded dropdown lists in Gridview control. One gives you business channel options and the other represents products depending on the business channel selected.I am trying to use different data sources for product dropdown list depeding on what the user selected from the business channel drop down list. How could I do this. Here is my current code:
[Code]....
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Feb 23, 2010
I am trying to bind the datasource of a ddl which is located inside the EditTemplate of a TemplateField.When is the best time to bind this datasource (after loading grid, before editing, ? (Note: I must do this in code behind).I am currently trying to bind it on the edit command:
[Code]....
The issue is that the list retrieved from the LoadLists method is null when passing to the LoadList method where the datasource is bound.
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Mar 31, 2010
I have 2 dropdownlist(ddlCategoryFooter and ddlItemCodeFooter)inside my gridview. I want to set ddlItemCodeFooter 's datasource to my getItemList(decimal categoryID) method. The selecteditem of ddlCategoryFooter will serve as the paramter which will be passed to my getItemList Method. Basically,ddlItemCodeFooter is dependent on ddlCategoryFooter's selectedItem.
I know it can be done in code behind approach but i prefer to place it in my asp page.
This i what i want to acheive:
DataSource ='<%# getItemList(Convert.ToDecimcal(ddlCategoryFooter.seletectItem))%>'/>
Source code for my Gridview:
[Code]....
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Apr 28, 2010
In one of the steps of a wizard control are 2 dropdownlist which data come from 2 distinct queries and cascade from the 1st one to the 2nd one. Where and how can code for that data binding and cascading be placed since it seems codebehind window for both of the dropdownlists cannot be found in VS property or event windows?
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Oct 18, 2010
I have a method that I created to use the row filter on a dataview. It works fine with a single filter but when I add the AND statement to the end it throughs and execption.
[Code]....
Syntax error: Missing operand before 'And' operator.I spent all day Friday trying to debug this but got nowhere?
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Jul 31, 2010
I had an excel data I converted to an access database. I did some vba to insert vbcrlf's into the excel and re-converted the data to access. It seems as if it did convert over until I printed on screen cell contents into a message box.So, I'm 100% sure my data has the cr & lf's but in my asp.net application's listview control they are not being rendered. I used easyfrom to convert from access to mysql.The application works fine except all the data is clumped together.
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May 7, 2015
I my website i have 2 dopdownlost i want when i change the value of one.. The other one loads data depending on the first one value
the both of the dropdownlists is in ajax update panal and i do have script manager
i used this code but not working
protected void floor_ddl0_SelectedIndexChanged(object sender, EventArgs e)
{
floor_ddl1.DataBind();
}
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Apr 28, 2010
I'm trying to read excel data. this is my excel file:You can Download this from here:http://www.one-v.co.il/Book12.zipI'm Using this code:
[Code]....
The result is:Why I cannot see the other results?
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May 11, 2010
In a formview I need to present a new value calucalted by dividing one field value by another. I need to present the result to one decimal place. The code I am using is the following, however it presents the resulting value rounded up or down to the nearest whole value:
<asp:label id=lblTotal text='<%# Convert.ToInt32(Eval("Value1")) / Convert.ToInt32(Eval("value2")) %>' runat="server"></asp:label>
I did try and insert refernces to {0:N1} but this just threw asp.net errors. Any advise on how I can guarantee that the value calculated is presented to one decimal place?
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