Forms Data Controls :: DropDownList Inside GridView - Coded In Code-behind
Jan 19, 2011
I need to generate a GridView and inside of one of the cells insert a DropDownList.
The GridView is a list of the users of the web application.The DropDownList is a list of roles of the web aplication.
The GridView is to be a table with the diferent users, diferent columns with various information, the last cell should have a DropDownList with the roles, the role which the user of the line belongs to, should be visible!
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Similar Messages:
Aug 16, 2010
I have an UpdatePanel with a GridView. This GridView has a template column that is a DropDownList. The problem is that the SelectedIndexChanged event does not fire for the DropDownList. Here is the code:
[Code]....
The codebehind:
[Code]....
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Nov 9, 2010
I have a gridview with some boundfields and a template field that contains a dropdownlist. I am trying to populate the dropdownlist with dateandtime values using code behind, but I get an error of Object refference not set to an instance of an object and I don't understand where I go wrongProtected Sub GridView1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridView1.Load
Dim ddl As New DropDownList
ddl = GridView1.FindControl("ddlShippingDate")
ddl.Items.Add("11/11/2010 12:00:00")
End Sub
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Oct 15, 2010
I am creating a gridview with 1 dropdown(Item),1 label(rate),2 Text bob (quantity,total amount).problem is that dropdown and label access records from one database table.on the basis of dropdown selection item rate label display rate of that item.then user insert quantity and amount calculated base of item quantity and rate. and row is autogenerated or by command button for other item.
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Aug 17, 2010
I've seen several examples here but for some reason I still cant get this to work. I have a gridview of user information.
userid name phone role
00001 john 12345 [downdownlist]
00002 jack 12345 [downdownlist]
00003 jeffz 12345 [downdownlist]
00004 jims 12345 [downdownlist]
The code would look something like this:
<asp:GridView
ID="gvUsers"
runat="server"
AutoGenerateColumns="False"
DataSourceID="dsUsers"
DataKeyNames="id"
[Code].....
So as my example code above shows, I'm trying to build a dropdownlist within the gridview. The datasource for the dropdownlist is based on the userid. The two datasources (dsUsers, dsRoles) are two different tables in the database. HOw can I implement the dropdownlist to use the userid from the gridview to query the dsRoles to populate its list?
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Mar 27, 2010
[Code]....
DropDownList not updating inside gridview
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Dec 27, 2010
i want to calculate no of dropdownlist whose text has been changed and get the value of ist column so as to update the database
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Oct 28, 2010
I have list of addresses and would like to bind ZIP Id to DropDownList.
when I use SelectedValue property it throw the error: 'DropDownList1' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value.
[Code]....
aspx.cs code:
[Code]....
Classes:
[Code]....
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Sep 9, 2010
How I could get the action of DropDownList inside a GridView, i try using CommandName but the DropDown didn't support this.
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Feb 10, 2011
I have this question for a gridview that ai use for a shopping cart. On my first 4 collums is data from my database cart (the 4'th collumn contain the price), on the 5'th collumn is a dropdown list (having 1 to 30 values). what i want is when i change the value in dropdown list the 6'th collumn to be updated to the value of(dropdownlist value * price). on page_load i have this
GridView1.DataSource = clasa.my_chart_bike(Convert.ToInt16(Session["id"]));
GridView1.DataBind();
on GridView1_RowDataBound i have this
if (e.Row.RowType == DataControlRowType.DataRow)
{
string t=((DropDownList)e.Row.Cells[4].FindControl("DropDownList1")).SelectedValue;
e.Row.Cells[5].Text =Convert.ToString( Convert.ToInt16(t) * Convert.ToInt16(e.Row.Cells[12].Text));
}
GridView1.DataSource = clasa.my_chart_bike(Convert.ToInt16(Session["id"]));
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Mar 28, 2010
I have a GridView, the first column it's a RadioButton template and the second it's a DropDownList Template, the number of rows depends on the user, I mean they are not static. I'm using the following JS function to get the row selected with the radiobuttons:
[Code]....
With this function I know which RadioButton was selected, now, I would like to get the DropDownList value or text of the selected row, I know I have to loop through every DropDownList to get an array of controls, but since they are something like ctl00_ContentPlaceHolder1_GVProducts_ctl02_DValsDropDown, I just don't know how to achive this through JS.
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Mar 28, 2011
I have a gridview which contains a templatefield. Inside this is an ImageButton and a dropdownlist. This is all created in the aspx page, although the ddl list items are populated in the RowDataBound event in the vb page. When i change the selected item in the drop down list and hit the imagebutton, the selected item is not maintained after postback. Instead the first record is displayed in the dropdownlist. I have wrapped an If Not Page.IsPostback around the datasource and databind's but this doesn't help. I have tried enabling viewstate in all areas on the page too, but still nothing. The list items for the ddl must be created on RowDataBound also. As far as I am aware, my ddl is not really dynamic, its just the list items which I add in the code behind which are classed as dynamic.
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Apr 16, 2010
I have the gridview inside another gridview, i want to sort that both gridviews, I don't know how to achieve using asp.net 3.5 visual studio 2008 c# code behind. Following are my aspx page,
<div
id="divclm"
runat="server">
<asp:GridView
ID="claimgrid"
runat="server"
AutoGenerateColumns="False" AllowSorting="True"
Width="100%"
AllowPaging="True"
CssClass="gareahead"
EmptyDataText="No Records To Display"
OnRowDataBound="claimgrid_RowDataBound"
OnRowCreated="claimgrid_RowCreated"
GridLines="Both"
OnPageIndexChanging="claimgrid_PageIndexChanging"
OnSorting="claimgrid_Sorting"
CaptionAlign="Right">
<Columns>
<asp:HyperLinkField
Text="<img id='upimg' src='Styles/Images/appschg.gif'/>"
ItemStyle-Width="10px">
<ItemStyle
Width="10px"
/>
</asp:HyperLinkField>
<asp:BoundField
DataField="name"
HeaderText="Name"
SortExpression="name">
<HeaderStyle
HorizontalAlign="Center"
/>
<ItemStyle
HorizontalAlign="Left"
/>
</asp:BoundField>
<asp:BoundField
DataField="code"
HeaderText="Code"
SortExpression="code">
<HeaderStyle
HorizontalAlign="Center"
/>
<ItemStyle
HorizontalAlign="Left"
/>
</asp:BoundField>
<asp:TemplateField>
<ItemTemplate>
</td></tr>
<tr>
<td
colspan="6"><div
id="<%#Eval("code") %>"
style="display:none;position:relative">
<asp:GridView
ID="Gdclmline1"
runat="server"
AllowPaging="True"
AllowSorting="True"
AutoGenerateColumns="False"
OnSorting="Gdclmline1_Sorting" BorderColor="Green"
BorderStyle="Solid"
BorderWidth="1px"
OnRowDataBound="Gdclmline1_RowDataBound"
OnRowEditing="Gdclmline1_RowEditing" Font-Names="Verdana"
Font-Size="8pt"
Font-Strikeout="False"
OnSelectedIndexChanging="Gdclmline1_SelectedIndexChanging"
OnRowUpdating="Gdclmline1_RowUpdating" PageSize="1000"
RowStyle-Wrap="false"
Width="100%"
CssClass="gareahead"
EmptyDataText="No Records To Display"
GridLines="Both">
<PagerSettings
Mode="NextPreviousFirstLast"
NextPageText="Next"
Position="Top"
PreviousPageText="Prev"
/>
<Columns>
<asp:TemplateField
HeaderText="phone"
SortExpression="phone">
<HeaderStyle
HorizontalAlign="Center"
/>
<ItemStyle
HorizontalAlign="Left"
/>
<ItemTemplate>
<asp:Label
ID="lblphone"
runat="server"
Text='<%#Bind("phone") %>'> </asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField
HeaderText="address1"
SortExpression="address2">
<HeaderStyle
HorizontalAlign="Center"
/>
<ItemStyle
HorizontalAlign="Left"
/>
<ItemTemplate>
<asp:Label
ID="lbladdress1
runat="server"
Text='<%#Bind("address1") %>'> </asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<RowStyle
CssClass="gr"
Height="100px"
HorizontalAlign="Left"
Wrap="true"/>
<SelectedRowStyle
CssClass="gr"
/> <PagerStyle
CssClass="gareahead"
HorizontalAlign="Left"
Wrap="False"
/> <HeaderStyle
CssClass="ghead"
ForeColor="White"
Wrap="true"
/> </asp:GridView>
</div>
</td>
</tr>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<PagerSettings
Mode="NextPreviousFirstLast"
NextPageText="Next"
Position="Top"
PreviousPageText="Prev"
/>
<HeaderStyle
HorizontalAlign="Center"
VerticalAlign="Middle"
CssClass="ghead"
ForeColor="White"
/>
<RowStyle
CssClass="gr"
/>
<SelectedRowStyle
CssClass="gs"
/>
</asp:GridView>
</div>
that aspx page contains gridview that contain one more gridview inside in it.Now i want to sort out both the grid i.e)claimgrid and Gdclmline1 i want code in c#.
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Nov 24, 2010
I a using Visual Basic, take this into consideration.
I do have the following GriedView:
<asp:GridView
ID="StandardClassifiedsDisplayGridView"
runat="server"
DataSourceID="srcClassifieds"
AutoGenerateColumns="False"
CellPadding="4"
ForeColor="#333333"
AllowPaging="True"
PageSize="100"
DataKeyNames="AutoNumber,UDTIItemDescentFrom">
<Columns>
<asp:TemplateField HeaderText="Picture">
<ItemTemplate>
<asp:ImageButton
ID="ThumbNailImageButton"
runat="server"
Width="75px"
PostBackUrl='<%# string.Concat("~/Classifieds/DetailPage.aspx?AutoNumber=",Convert.ToString(Eval("AutoNumber")),"&FlagForm=NoSubmitted") %>'
ImageUrl='<%# IIF(System.IO.File.Exists(Server.MapPath(string.Format("~/UploadedImagesClassifieds/{0}{1}", Eval("AutoNumber"), "Pic1.jpg"))), string.Format("~/UploadedImagesClassifieds/{0}{1}", Eval("AutoNumber"), "Pic1.jpg"), "~/UploadedImagesClassifieds/NoPicture.gif")
%>'
/>
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" />
</asp:TemplateField>
<asp:BoundField DataField="Category" HeaderText="Category" />
<asp:HyperLinkField HeaderText="Listing Title" DataNavigateUrlFormatString="~/Classifieds/DetailPage.aspx?AutoNumber={0}&FlagForm=NoSubmitted" DataNavigateUrlFields="AutoNumber" DataTextField="ItemTitle"/>
<custom:LongTextField DataField="ListingComment" Width="400px" Height="75px" HeaderText="Listing Comment" HtmlEncode="false" />
<asp:BoundField DataField="EnterDate" HeaderText="Listed on" />
<asp:HyperLinkField HeaderText="See trade history" DataNavigateUrlFormatString='<%# IIF( Eval("UDTIItemDescentFrom").ToString <> "Parent", string.Format("~/Classifieds/SearchPageWithForm.aspx?AutoNumber=", Eval("UDTIItemDescentFrom"),
"&KindOfSearch=ShowMyUDTIGameDownlines"), string.Format("~/Classifieds/SearchPageWithForm.aspx?AutoNumber=", Eval("AutoNumber"), "&KindOfSearch=ShowMyUDTIGameDownlines") ) %>' Text="See trade history"/>
</Columns>
The code inside the PostBackUrl=' and ImageUrl=' are working fine. I tried to do the same, with the code inside the DataNavigateUrlFormatString=' but it is giving me a hard time. It is not working.
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Jun 12, 2010
I am having Gridview ie : inside i have placeholder, So on Gridview_RowDataBound - according the Specific Condition getting from DB then - i am Creating the Dropdownlist dynamically here and assign Datasource. so up to this its ok. My Problem When the user Select any value on the Dropdownlist on Gridview ,
i have one button outside the Gridview so if i click the button i am want to get the dropdownlist selectedValue so on the Button_Click Event
i used foreach row in the Gridview.. but i do no how to get the value. as the Dropdownlist is create dynamically on Gridview_RowDatabound event. but here what i have to write to get the dropdownlist?
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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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Jan 18, 2011
i have a div inside a gridview. Now I need to access the div from code behind to change its background color
for some specific data.
[Code]....
I am trying to access the DIV from gridview row data bound without any success.
[Code]....
I have the following error
"System.NullReferenceException: Object reference not set to an instance of an object."
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Jan 5, 2010
Two ddl inside gridview. on selecting first ddl1 fill next ddl2 by passing selected value as parameter by executing the sqldatasource select command in codebehind.code:
GridViewRow gr = (GridViewRow)((DataControlFieldCell)((DropDownList)sender).Parent).Parent; //find the control in that DropDownList d1 = (DropDownList)gr.FindControl(ddl1); DropDownList d2 = (DropDownList)gr.FindControl(ddl2); SqliaDataSource.SelectParameters.Add("@name", d1.SelectedItem.Text.ToString()); dataView dv=(dataview) SqliaDataSource.select(DataSourceSelectArguments .Empty);
Error: There is no source code available for the current location. and Returns null value
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Sep 6, 2010
I need to create a TemplateField column dynamically , which will contain dropdowlist controls. I've been using this
example to create my first dynamic columns and for the last column, the one that contains dropdowlist controls, I've written this class:
[Code]....
But what I don't know is, where should I populate the dropdownlist control?
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Feb 8, 2011
I hav a gridview in which i display the project name,created date,Start time ,end time ,total hours along with the task id field which is visible=false.
My starttime and endtime format is 2010-10-13 03:00:00,but i want to display these two fields in dropdownlist ie.,only i want to display the HH:MM:SS in dropdown so that when the user changes the time it should be automatically be reflected in the total hours(6:0) field after updating.pls tell me what i have to do to bring the Hours ,minutes and seconds in dropdownlist into the cells of gridview with the value in database ,how to write the code.
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Dec 28, 2010
this is in my aspx page:
<asp:HyperLink ID="lnkAll" runat="server" CssClass="links_b"></asp:HyperLink>
<asp:GridView ID="gridfeatured" runat="server" AllowSorting="false" AllowPaging="false" AutoGenerateColumns="false"
ShowHeader="false" GridLines="None" CssClass="grid" CellSpacing="5">
<Columns>
<asp:TemplateField itemStyle-CssClass="gridrc">
<ItemTemplate>
<table>
<tr>
<td>
<asp:HyperLink ID="lnkLogo" runat="server" >
.
.
.
.
now, in code behind it is'nt allowing me to use lnklogo.navigateurl("...") property.
whereas it is allowing me to use lnkall.navigateurl("...").
i think this is because the lnklogo is inside gridviews tempalte field. what is the solution to this.
i cannot provide navigateurl in aspx page and have to provide it in code behind since i want to do a conditional loop on it.
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Jan 24, 2011
I have a dropdownlist in a headertemplate but I can't seem to access it in the code behind to work with the onselectedindexchanged event. I want to change the data that is shown on the event but can't access the control.
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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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Dec 31, 2013
I want to add dropdownlist in gridview n connet it to one of my database column how can i?
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Jan 16, 2010
I have the following (abbreviated) code:
<asp:FormView ID="FormView1" runat="server" DataKeyNames="ItemID" DataSourceID="LinqDataSource1">
<EditItemTemplate>
<asp:DropDownList ID="ddlCategory" runat="server" SelectedValue='<%# Eval("Category") %>'
DataSource="<%# GetCategories() %>" DataTextField="Text" DataValueField="Value" />
</EditItemTemplate>
<ItemTemplate>
<asp:ListView ID="lvParticipants" runat="server" DataSource='<%# Eval("Participants") %>' >
<InsertItemTemplate>
<asp:DropDownList ID="ddlCountry" runat="server" SelectedValue='<%# Eval("Country") %>'
DataSource="<%# GetCountries() %>" DataTextField="Text" DataValueField="Value" />
</InsertItemTemplate>
</asp:ListView>
<ItemTemplate>
</asp:FormView>
When the FormView is in Edit mode, ddlCategory is populated as expected by calling GetCategories(), which returns a List of categories. However, when the ListView is in Insert mode, ddlCountry is empty. I put a break point in GetCountries(), but it never gets called. If I change the name of the method, I get an error. So it recognizes the method at compile time, but does not call it at run time. I'm guessing this is an embedded binding issue of some kind, but I'm hoping someone can save me a lot of time by pointing out the solution.
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