Forms Data Controls :: Getting Data Out Of GridView Where Checkbox Template Field Is Selected?
Jun 10, 2010
I just wrote something small up with a GridView databound to the products table of the northwind database to play around with the control. I added a template field and put a checkbox in it, ProductID, ProductName, and UnitCost. I can successfully loop through the GridView and find the rows that have the checkbox checked, and can get ProductName for each row, but keep erroring out on ProductID and UnitCost. It's probably something small, but I just cannot figure it out.Here is what I have so far:
[Code]....
My code behind, where I handle a button click event to get all values in rows w/ selected checkboxes:
[Code]....
Can I not use row.Cells[i]? The only thing Intellisense gives me that makes any sense is 'rows.Cells[i].Text'... not sure what else to do.
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Jun 11, 2010
I'm trying to remove a GridView Row if the user has checked a checkbox in that
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row (the checkbox is in a template field), but I'm unable to actually remove that row from the GridView. Here's what I have, I think I'm getting the row index incorrectly...
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Nov 9, 2010
I have 5 gridviews, all of of them have a Checkbox template field. I already did SUM of a specific column in the gridviews and displayed the Total in the gridview footers.
There is a submit button on the page as well.(this is not in a template column in the gridview)
what i do is select some rows in the gridviews by ticking the checkbox. Then I click on the submit button and the values change in the database and page refreshes with the new Total in the gridview footers. Any row that was ticked. the checkbox for that row in the gridview gets disabled. so cannot change the value again.
Now i want a way to show a popup with a SUM of those rows that are ticked recently and the SUM of already ticked and disabled rows before the values change for the ticked rows in the gridview when the submit button is clicked.
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Mar 25, 2010
i have a gridview which consists of databounds and dropdownlist control. When I press the Add Grid Row Button, it will insert a row. Now my question is, if the user selected an item in dropdownList in the firstrow and the user click the AddGridRowBtn Again which will generate the 2nd row, how would i maintain the selectedItem in the dropdownlist after postback?
Source For Gridview:
[Code]....
Add Row Code
[Code]....
[Code]....
And For Grid Row Created Event
[Code]....
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Jul 31, 2013
i am implementing a update query module.i am displaying all fields from a table for a term searched. well now i am implementing update option for the record which are displayed, i have like 70 columns in my table, and i want to know how to restrict some selected fields to be only read only while the form can be updated ?Like if user select to update a record then some selected field such as "Timestamp, UID etc some selected fields" remains READ ONLY !
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Jan 1, 2011
I've got a details view control on a page. One of the columns, from the database table, is a bit field. It is not nullable, and that's the way it has to be. Also, in most cases, when inserting data, it will be true (1) be default. I've found in testing, when inserting data, that it was false, for some reason. So, I changed the column to a template field and went to the InsertItemTemplate for that column, and changed the checkbox Checked property to True, instead of the default False. However, it has really screwed up the page because now it won't save anything at all! When I try saving something using the details view, it does show the checkbox as being checked, but man, once I try saving it I get an error message back from the database saying that the column doesn't allow for nulls.
Huh??? How in heck can the column on the page have a value (it is checked), but when it goes to save something it fails? Furthermore, before I converted this field to a template field, it worked perfectly. I tested several other insertions, and they all worked. But when I converted it to a template field, it stopped working? What's that about? I even tried setting the default value for the Checked property of the checkbox back to False, but that still doesn't work, it still wants to pass in a null. What's going on here? Why is it that converting a field to a template field, which was working perfectly fine before I made the convension, stop it from working at all?
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Dec 22, 2010
have situation here. On checking checked checkbox inside template field on grid view. This my codethis code suppose to be update into mysql when checkbox of each row being checked. Mean only update database which row has being checked, other wise the data inside database not being updated.What happen now once button being click, code above will be executed, but all the data being update not considering the checked checkbox only.
[Code]....
[Code]....
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Dec 4, 2010
Setting up the editItem template of a gridview. I have a template field with a dropdown list for editing. When the gridview goes into edit mode the dropdown list is displayed with all the right options but the current value of the field (pre-editing) is not the selected value of the dropdown list? How do I make that happen? I have a couple fields where the editItem template will use a dropdown list and I'm sure a user will not realize those values have changed and they will just edit what they intended to edit and save the changes, inadvertently also making changes to other fields.
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Feb 27, 2010
my gridview binds to a datatable and i added a template field to the columns the template field contains a link button. i bind the command argument of this link button to a field from my data table. on the row command event i allow the user to activate his product according to a condition. what i want is how to add a javascript alert if the condition doesn't match. in other words i can't call the hyperlink in the templatefield in order to add a javascript to its OnClientClick attribute.
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Aug 16, 2010
I have seen several Web Sites that use GridViews that have lookup fields with different Value and Text Fields (as in drop down lists) but I can't seem to figure it out how to display the Text Field in the Item Template when the Text Field is not in the datasource. .
Here's what I have. I have a Gridview whose datasource is a Linq to SQL Invoice table, e.g.
InvoiceID
CustomerID
InvoiceNumber
THe Customer table is related to the Invoice Table thru the CustomerID. The relationship is defined in SQL Server and is displayed in the DBML.
I have created a template field for the CustomerID field in the Gridview. I would like to display the CustomerName when the Item Template is displayed and a DropDownList in the Edit Template. The DropDownList works great, but I cannot seem to figure out how to display the CustomerName in then Item Template.
I seem to remember seeing in some video that you can simply drag the CustomerName into the CustomerID Item Template Field. But I can't seem to find the customerName field. The DataSource includes the Customer Table because of the relationship, but no fields are displayed.
I suspect this is real simple, but I cannot seem to find an article or video that explains how to do this.
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Jan 6, 2010
I have a gridview control
i add template column dynamically to gridview
like this in a function in AddColumns button clickevent
gv.Columns.Clear()
Dim chkCol As New TemplateField
chkCol.ItemStyle.Width = 20
chkCol.ItemStyle.HorizontalAlign = HorizontalAlign.Center
gv.Columns.Add(chkCol)
2)
and in row databound event i added checkbox control to this template field. like this
Protected Sub gv_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles gv.RowDataBound
If e.Row.RowType = DataControlRowType.DataRow Then
Dim chkbox As New CheckBox
chkbox.ID = "chkSelect"
e.Row.Cells(0).Controls.Add(chkbox)
End If
End Sub
HERE I WANT TO GET CHEKC BOX IN btnok click event
Protected Sub btnOk_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnOk.Click
Dim linkId As String
Dim summary As String = ""
'Enumerate the GridViewRows
For index As Integer = 0 To Me.gv.Rows.Count - 1
'Programmatically access the CheckBox from the TemplateField
Dim cb As CheckBox = CType(gv.Rows(index).Cells(0).FindControl("chkSelect"), CheckBox)
If cb IsNot Nothing Then
If cb.Checked Then
linkId = Me.gv.DataKeys(index).Value
End If
End If
Next
Me.Page.Title = linkId
End Sub
But here i am not getting Check box even i used find control. how i get checkbox
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Sep 11, 2010
i have a gridview as follows,
<asp:GridView runat="server" ID="gvPO" AutoGenerateColumns="False" >
<Columns>
<asp:TemplateField HeaderText="PO No."><ItemTemplate>
<asp:LinkButton ID="lnkPo" runat="server" Text='<%#Eval("Purchase_order_no") %>' ></asp:LinkButton>
</ItemTemplate></asp:TemplateField>
</Columns>
</asp:GridView>
The linbutton shows Purchase_order_no. When i clicked on a paricular purchase_order_no., it will navigate to another page with a gridview that shows details of that particular Purchase_order_no...
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Aug 24, 2010
I have a Linkbutton on a Gridview which has got the below RowDataBound:
[Code]....
The above javascript will close the page automatiically. My intent is to close the page after the Link in the template field is clicked, but here the page closes automatically when its loaded.
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Jan 10, 2011
I have a gridview, whose columns I am dynamically binding. There are two fixed columns, one is a button field and another is a template field containing an image. The other columns might vary in number and behaviour, so before binding the grid, I am removing all columns of the gridview except the button field and the template field. But after doing this, if i try to do a findcontrol for the template field(Image column), it is notgetting the control. Means while removing the other columns, this image control also getting removed.Below is my code:
[Code]....
Now, after this i call the databind method. The problem is with the for loop, where I am removing the columns after the image column. And I am not able to find the control after that.In rowdatabound i am trying to find the control like this:
[Code]....
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Aug 12, 2010
When I change my insert update and delete buttons to template field....they do not work properly anymore. I get a "Cannot insert a Null Value into...blah blah blah, error.
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Nov 18, 2010
[Code]....
This is my Grid view source basically i want as soon as i click on Select Button , the corrsponding Row Data get's redirected to another Page with the Data I know how to redirect to another page with query string only thing is that where and how i can store the data my .cs source
[Code]....
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Nov 30, 2010
i have a grid with template feild with two button's Accept and Deny and Command Name="update" and command argument ="Accept" and command argument2="Deny" now the problem is everytime when i click any Button it gives me first row data see my source
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My Code Behind
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Image [URL]
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Feb 3, 2011
I have a gridview where I am using the update. I have converted the label into a templatefield and added a dropdownlist which is getting polulated in the Rowdatabound event. When I test the update i get an error
Cannot insert the value NULL into column 'StartTime', table 'HTC.dbo.EventDates'; column does not allow nulls. UPDATE fails.The statement has been terminated. so I am ussuming its still trying to update from the label rather than using the dropdownlist. here is my code:
[Code]....
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Mar 11, 2011
I have following codebehind in ASPx - VB.Net in my aspx project, i want sum a template column (txtAmount) to show another TXSum template (without any postback) any one give me a better soluation in javascript.
My Code:
[code]....
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Jun 22, 2010
I have a gridview control set up like so:
[Code]....
I am using an IComparer to do the sorting of the gridview and binding it to a list of objects. It used to be that the linkbutton in the first template field was being done like this:
[Code]....
The sorting worked just fine when it was like this, but I would prefer not to use a querystring value. The problem with using the linkbutton is that the sorting appears to work (there are only two rows in my test case and they change places), but when the linkbutton is clicked on it is in the same order before the sort took place. After each sort the gridview's datasource is reset to the newly sorted list of objects and the databind method is called.
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Mar 31, 2010
I have a gridview and basically at page load I want it to display with an empty row. The first field in the gridview would be a template field containing a textbox. I wan't to be able to type in, for example, a product code ('abc'). This would be the parameter for the stored procedure and then the rest of the columns (40+ additional columns) in the gridview would populate with the rest of the data pertaining to that product code (i.e. price, unit of measure, etc.). In short the template field texbox is the control to bind the gridview.
After the row is populated I could click a button or link that would add that entire row to my gridview and then add another empty row where I could enter another product code... populate the row then add that row to the gridview. and so on...
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Mar 6, 2011
I have a GridView that is bound to a DataTable containing questions. Each question has a possible score of 1 to 9 which is handled by a Template Field with a RadioButtonList databound to another DataTable (containing the values 1 to 9). This all works fine except as an added complication, some of the questions have an extra choice in another field. So the problem is how do I bind the second Template Field to a datasource that is dependent on the question. It's like passing a parameter to the datasource of the second Template Field, the value of the parameter being the Key Field of the particular row. Is this possible and if so, how do I do it
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Dec 2, 2010
how can i align text in gridview template feild.already test ItemStyle-HorizontalAlign="Right"
but not working..
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Mar 17, 2011
I am using gridview. I Added checkboc under itemtemplate.My page works fine. i have set my page according 508 standards. It looks for associated control id for every textbox, check box..etc.
When i check my page by 508 standards its giving form lable is missing for gridview item tamplate checkbox. i tried adding lable inside item tamplate and i set the check box id as Associated control id for the label. eventhough its not going off that error. After setting some text my errors are resolved.
but if add any text item template checkbox alignment is missing. i cann't hidden the lable. If i hidden the label it again show up Form label is missing. how can i add lable without effecting to GV item template checkbox alignment.
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Nov 3, 2010
I have designed a gridview with a radio button inside the itemtemplet. I also have a confirm button. A user is allowed to check several radio button and when a confirm button is pressed then database is updated with the value of radio button.
But when i check the button it is shown as checked in UI but when I check through code behind, it shows checked property of radio button as false.
for (int i = 0; i < gvTransaction.Rows.Count; i++)
{
if (!((String.IsNullOrEmpty(gvTransaction.Rows[i].Cells[0].Text)) || (gvTransaction.Rows[i].Cells[0].Text == " ")))
{
string transactionID = gvTransaction.Rows[i].Cells[0].Text;
RadioButton btn = (RadioButton)gvTransaction.Rows[i].FindControl("rbtSelect");
if (btn.Checked)
{
Although the radiobutton is checked code never reach here.
}
}
}
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