Forms Data Controls :: Why Does DropDownList Generate Three Controls In A Table Cell
Jun 15, 2010
A DropDownList is put in a GridView's TemplateField. Its corresponding table cell at runtime shows three controls (verified by checking gv.Rows[iSelected].Cells[iColumn].Controls). The three controls are: 1. Literal; 2. DropDownList; 3. Literal. It is not the case for other controls, at least not for TextBox which I usually access by something like gv.Rows[iSelected].Cells[iColumn].Controls[0]. This is not a big problem because I can always access it by its static ClientID, but I am curious why so and whether other controls have the behavior.
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Mar 11, 2011
I have a situation where i need to update my Dropdownlist templatefield inside a GridView....but only for a specific cell. I have seen codes like this to loop through the whole GridView and update every rows in a specific column, but how do i do it if i only want to update one specific cell ? (If i know the index information of the cell, for example, I know i want to update the dropdownlist on Column 3 and Row 2)
foreach (GridViewRow row in GridView1.Rows)
{
if (row.RowType == DataControlRowType.DataRow)
{
this.WorkTypeDDL = ((DropDownList)row.FindControl("WorkTypeList"));
this.WorkTypeDDL.DataSource = AL;
this.WorkTypeDDL.DataBind();
//more codes blah blah blah//
}
}
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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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Feb 11, 2011
Im trying to find an example online where someone is manually coding a dropdownlist in a gridview.
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Mar 21, 2011
<asp:Panel ID="PanelNew" runat="server">
<div>
<asp:GridView ID="GridViewTest2" runat="server" AutoGenerateColumns="true" AllowSorting="true" DataKeyNames="iOcsKeyToPropertyId"
onrowcancelingedit="GridViewTest2_RowCancelingEdit" onrowediting="GridViewTest2_RowEditing" onrowupdating="GridViewTest2_RowUpdating">
<Columns>
<asp:TemplateField>
<HeaderTemplate>
<asp:Label ID="lblColumnHeader" runat="server" Text="iocspropertyid"></asp:Label>
</HeaderTemplate>
<EditItemTemplate>
<asp:DropDownList ID="DropDownListTest" runat="server">
<asp:listitem>1 </asp:listitem>
<asp:listitem>2</asp:listitem>
<asp:listitem>Item 3</asp:listitem>
</asp:DropDownList>
</EditItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</asp:Panel>
i have a stored Procedure that i want to replace the listItem 1,2,Item3. How can i replace that with the store procedure so i can see the info from my database in my DropDownList
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Apr 1, 2011
I am looking for a way to set certain cells in a GridView to have DropdownLists instead of the bound fields I currently use. I understand how people are able to do this on a whole column, but need to do this based on which cell it. Let me explain why. A fellow programmer who is as I am newer to ASP, built a GridView that only shows one record. This Record being the current ticket if you will. He builds a Data Table like this.
[Code]....
[Code]....
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Nov 26, 2010
Using Web Dev 2010 Express. .NET 3.50
I have an aspx page with a div containing an asp:Table with 1 row, 1 cell. From the codebehind, I read a user supplied text file and add rows/cells (vb). I would like my output to have indented text in certain rows. Example follows:
[code]....
how to do this?
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Feb 22, 2010
I have a dynamic Gridview that I build on the fly. It works great. Now, I want to put paging on it. I have put the following code as an event on Pageindexchanging. When I do, the system tells me that the BindGridControl is not declared. The other lines have no error on them. What am I doing wrong? The name of the Datagrid is MyGridview. If I comment out the BindGridControl the system does not get an error but it of course does not show the second page when I click on it.
[Code]....
I did it with DIV tags rather than trying dynamic page building
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Feb 5, 2010
I am creating a attendance database table in sql server2005.. i just want to generate the gridview as follows in form.aspx.. i am using vb.net generate the report in gridview..
Attendance table
employee name(varchar)- Its contain all the employees name
date(datetime)-Its contain dates
status(varchar)-Its contain the status of employee whether they are Present or Absent
I just need all the employee name (data) in one rows and dates in columns.. also i need the status of the employees inside this.. whether they are absent or present.
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Mar 18, 2010
To start with - I'm using VS 2008/.NET 3.5 and working in a company-provided template that leaves me restricted to some/many settings that go beyond the body of the page itself. That said, I need to create a page that will display data from individual cells in a database table that, when lined up would look like a normal sentence. Based on certain criteria I would have certain sections of the sentences hide (ex. if it contains a key phrase or if it's empty).
I've seen a method in which Labels could be used to achieve this effect, where I would assign it the grid coordinates of the cell in a table, but I could never get it to work. I've been successfully connected to the table (LINQDataSource) but still have a blank canvas without this fundamental display technique as that will be all that's in it.
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Oct 15, 2010
I'm used to Dreamweaver where this is possible. I find it hard to believe that I would need to use a 1 column gridView control.
Is there a way to drag one field from the db Explorer window onto my page and NOT get a grid view?
Or alternatively, I used to be able to put something like this in ASP classic (years ago!) <%= Eval("User") %>
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Jun 23, 2010
I need to create a selection table, i.e., a table with names and checkboxes.
When some checkboxes are selected, based on selections made on checkboxes i need to generate results(not from database), results are like different name of Is there some kind of architecture for this?
for example, we have name of columns as has legs, has feathers, has wings, can swim, carnivorous,herbivorous, etc
and based on selections i would say animal or bird or fish or amphibian, etc.
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Feb 15, 2014
I have a grid with 5 rows and 5 columns, All containing templetefield(Combobox)I am trying to set the background color of my grid cell(contain combobox) depending upon which item is selected. (again, dependent on item selection, so background color is not permanent). How can i achieve this?
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Jul 17, 2015
How do i change the name column text the current row when the selected index of drop down is changed? ex:first row is mudassar khan and belgium, when i change belgium i want mudassar to be replaced to a name which i fetch from database....
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Apr 30, 2010
I have a grid view populated with some data included bit fields and I made an export to excel function For each row i need to check the cell with the bit value to change the cell color, but the cell is always empty, even if is the field is set to False or True. foreach (GridViewRow row in gv.Rows)
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Feb 11, 2010
I'm having a weird problem where the GridView cell that I'm programmatically updating turns grey, and throws a null error when attempting to save row. I have been searching all day and have not been able to find a solution. I'm guessing there is a problem with my code, so here it is:
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
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Mar 24, 2010
How to set Height and ItemSource(Business Object as DataSource for Cell) for every Cell in DataGrid/ Grid? Shown below is part of code I am currently using with Grid Control. What I am currently doing is that I am using ListBoxItem, set Item Height and ItemSource at ListBoxItem Level, Add ListBoxitem to ListBox and then Add ListBox to Grid, It leaves me with just one row and multiple columns in the Grid, which is perhaps not the best way of doing it as it doesn't allow me to take benefits from UI Virtualization of Grid.
[code]....
I am open to use any control i.e. Grid/ DataGrid provided it allows me to set Cell Height and item source at Cell level. In my requirement, Cell height depends on the Item duration and size of image, which means the height of the cells may not be same across cells in any particular row.
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May 4, 2010
I am showing full year calendar in asp.net table and showing colors in table cell according to absence type. I want to show half blue and half white color in one cell if staff has taken half day off.
How can i do it? apart from using image.
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Jul 17, 2015
How to create a table in the code behind to display data from the database by creating a new table etc. How I could target existing HTML in my aspx file as opposed to creating a new table in the code behind?
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Oct 15, 2010
[Code]....
Dropdownlist is not updating the table
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Mar 4, 2011
I have a formview with insert function into "table1". In that formview i also have a dropdownlist listed with records from "table2". (This dropdown is of course instead of a textbox). get "table1" inserted when one of the field is from a different table?
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Sep 16, 2010
I have a gridview which gets its data from a database tablenow i ghave added a dropdownlist to this gridview but this dropdown should get the data from another table and should set its value automatically with a foreign key from the gridviewi have added the code like below in my rowDatabound but it just loads 1 field and then how should i get the selectedValue according to the gridview id field??
Protected Sub Friends_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
If e.Row.RowType = DataControlRowType.DataRow Then
Dim conn As New SqlConnection(HttpRuntime.Cache("con"))
[code]...
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Nov 23, 2010
how to create a dropdown list dynamically from a database table. Something like:
OdbcCommand sqlcommand6 = new OdbcCommand("select vehicle_cat_desc from vehicle_cat where vehicle_cat_desc=" + "'" + manufacturer.Text + "'", dbConnection);
OdbcDataReader cats = sqlcommand6.ExecuteReader();[code]....
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Jan 14, 2010
I believe this is a newbie question, but i just figure out my head around.. does anyone know how to auto adjust the control in the table cell so its width follows the width of table cell?
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Nov 1, 2010
i we click a table cell than color is blue and we again click a different cell the first color is remove and second is bule
[Code]....
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