C# - How To Add The Footer Row Dynamically In Gridview With Textboxes
Jun 28, 2010how to add the footer row dynamically in gridview. with textboxes..
View 3 Replieshow to add the footer row dynamically in gridview. with textboxes..
View 3 RepliesI am trying to retrieve the values from the textboxes in the gridview footer row but getting the following error when trying to save the changes:
Object reference not set to an instance of an object. Description:An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
[Code]....
Line 63: Line 64: Line 65: jobName = CType(footerRow.FindControl("txtJobName"), TextBox).TextLine 66: Line 67: jobDescription = CType(footerRow.FindControl("txtJobDescr"), TextBox).Text
Below is the gridview aspx code:
[Code].....
Below is the VB.NET code:
[Code]....
how to add gridiview footer row textbox values to a database....
How to calculate sum of textbox in every column in gridview?
let say i have 3 column and 20 rows in my gridview , so how to have it total for each column..?
I have created a gridview dynamically from scratch and added it to my aspx page. This works fine, but i have a button in the footer of on of the columns, which when clicked on makes the gridview disappear and doesn't fire the onclick event that it should. This should obviously not be the case. My question is why does the event not fire and why does the gridview vanish? Bear in mind i have never created aa gridview in the code behind before, so excuse me if i am being dense
Code creating columns
Dim gvTownships As New GridView
'COLUMNS
Dim tmpCategory As New TemplateField
tmpCategory.ItemTemplate = New cGridViewTemplate(DataControlRowType.DataRow, "Category")
tmpCategory.HeaderTemplate = New cGridViewTemplate(DataControlRowType.Header, "Category")
tmpCategory.FooterTemplate = New cGridViewTemplate(DataControlRowType.Footer, "Calculation")
'INFORMATION
gvTownships.AutoGenerateColumns = False
gvTownships.ID = cmbChoice.SelectedItem.Text
gvTownships.ShowFooter = True
gvTownships.CssClass = "mGrid"
gvTownships.RowStyle.Wrap = False
gvTownships.HeaderStyle.CssClass = "mgrid"
gvTownships.HeaderStyle.Wrap = True
gvTownships.FooterStyle.CssClass = "mGridtf"
gvTownships.AlternatingRowStyle.CssClass = "alt"
gvTownships.GridLines = GridLines.Both
'add columns
gvTownships.Columns.Add(tmpCategory)
gvTownships.DataSource = dstSuburbTowhShip
gvTownships.DataBind()
Code to add button to footer
Sub InstantiateIn(ByVal container As System.Web.UI.Control) _
Implements ITemplate.InstantiateIn
Case DataControlRowType.Footer
If columnName = "Calculation" Then
Dim btnCalculate As New Button
btnCalculate.Text = "Calculate"
btnCalculate.CssClass = "button"
'add handler
AddHandler btnCalculate.Click, AddressOf btnCalculate_Clicked
container.Controls.Add(btnCalculate)
End If
Case Else
' Insert code to handle unexpected values.
End Select
End Sub
Private Sub btnCalculate_Clicked(ByVal sender As Object, ByVal e As EventArgs)
Try
Dim btnCalculate As Button = CType(sender, Button)
Dim gvRow As GridViewRow = CType(btnCalculate.NamingContainer, GridViewRow)
btnCalculate.CommandArgument = "Calculate"
Catch ex As Exception
End Try
End Sub
End Class
I am having a Event Registration form,in which admin can create a event,a event will have Ticket Categories.So I need to create row with 3 text boxes(Ticket Type,Quantity,Price) if clicked on a link of addnew for example. Like that he can create n no. of tickets, any sample code so that I can implement this functionality,I just need how to create UI and retrieve values from textboxes of GridView.
View 1 RepliesScenario is: I have multiple positions and multiple employees.
Now in one of my forms I know how many positions are there and corresponding to each position i want to show Employee DropDownList(DDL) and Text Boxes (Start Time, EndTime) and some comments for each position. Employee DDL will be populated from DB and Position name will be displayed on labels and that too are getting form DB
say at one instance i have 5 positions and then i want DDL of EmployeeName for each position and similarly TextBoxes for each positions Where i can ask user to full the information for each Position and user can save the data.
And at another instance similar behaviour is required if Positions are 10 , 3 , 8.
I want to create a gridview with the first column being the Job Number and then a variable number of subsequent column which are fordates. This grid is a data entry for hours worked on a particular date for a particular job. I wrote the code to get the correct number of columns and column headers but I am having trouble getting textboxes into the grid cells.
public partial class _Default : System.Web.UI.Page
{
#region constants
[code]...
I am using
3 textboxes
1 dropdown
2 Buttons ( Add Row , Submit )
1 GridView ( For Temporary Data Holding of above controls )
Now what i want is that when a user fills some data in textboxes and select something from dropdown , then clicks on Add Row , this temporary gridview shows that data in it ....
how to achieve it ?
I have a grid view which contains Hours as one of the columns.. now, i need to have a total hours in the footer (sum of hours for all rows).
View 2 RepliesI'm creating 14 textboxes for every day in a month and user can select the month so i have o create them dynamically. But i can't reach the values in the textboxes.
When i don't create them dynamically like
<asp:TextBox ID= "TextBox1" name="TextBox1"> </asp:TextBox>
I can get the value from the C# side by using the
((TextBox)Page.Form.FindControl("TextBox1")).Text
However this moethod doesn't work for the textboxes that i created dynamically. I'm creating them in a loop it's something like;
[Code]....
Then i add the text box to the necessary places at my table.However i can't reach the textboxes when i use the same method
((TextBox)Page.Form.FindControl("!A uniqe ID!"));
It gave a null value...
find my aspx and codebind files, I dont understand why am I unable to see the textboxes on my page once the code is deployed.ascx code
<asp:DropDownList ID="DropDownList1" runat="server"
onselectedindexchanged="DropDownList1_SelectedIndexChanged" AutoPostBack="true" >
<asp:ListItem Text="one" Enabled="true" Value="1" Selected="True"></asp:ListItem>
<asp:ListItem Text="two" Enabled="true" Value="2" ></asp:ListItem>
</asp:DropDownList>
I would like to get the textbox dynamically loaded at the change of dropdown box and get the values entered in the textboxes into the result textbox.Once i change the dropdown box, i get the texboxes, but when I click the button , the textboxes disappear..
[Code]....
I have a weird problem, using ModalPopup extender. I am unable to add/remove the textboxes I need. I am adding a default textbox and enabling "Add" button to add more. The user should be able to remove the unnecessary textboxes.
[Code]....
I'm creating textboxes in the Page_Load event and giving them values, however whenever I load the details I am getting the same output. I always seem to get the first output I got, even on subsequent searches.Here's what my code with the irrelevant information missing:
Textbox txtName = New Textbox();
protected void Page_Load(object sender, EventArgs e)
{
[code]...
If DropDownList has two values (e.g. "Item 1" and "Item 2") and has autopostback enabled, first time it will generate and show "Item 1" in the textbox (the default value for the DropDownList), but if this is changed and the autopostback fires, the textbox does not change.I've tried getting around this by creating a new TextBox, overriding the "LoadPostData" function to prevent this from loading, which got around the issue there, but then I couldn't view the data afterwards.
Any idea how I could get around this? I may be approaching this in the wrong way.Edit: I've added another item to DropDownList that removes TextBox, so that it can be re-created again. It seems to show the correct data when it is re-created after being removed, but if I'm attempting to just edit it, this isn't updating correctly.Edit2: Here's the rest of the code for this page in case this helps at all. The objects which I'm having issues with are SBUName and SBUComments, which are both TextBoxes. The same issue is also happening for SBUClientDropdown but I believe the resolution will be similar:
DBHandler DBHandler = new DBHandler();
List<string> clients = new List<string>();
List<string> clientGroups = new List<string>();
[code]...
I would like to add textboxes when a button is clicked. I created a Panel with ID Pnl_language and I use the following code:
When I click, all the Textboxes are created successfully for the first time. But when I click for second or third time etc, it doesn't add more textboxes, it replaces the current with the next number of session. What should I do so it always add 1 more when I click?
I have class as such:
[Code]....
and a class called ReportSource which contains a List<ReportSection> sectionList, and an instance of that ReportSource class is passed to the view to display each table within the list of DataTables.
What I'm trying to accomplish is generate a TextBox in the View for each DataTable displayed, where the user can enter some comments in each of those TextBoxes, and then store those comments in the comments field of ReportSection.
I have a loop in the View as such:
[Code]....
I have the following code to generate a table with the necessary textboxes. Now i need to populate those fields with the data from the table. If it makes it any easier, the individual textbox values are stored in a table with a reference to the main recordID
How can i populate the correct textbox with the appropriate column value?
[Code]...
i want to repeat rows dynamically , while click on 'add' button
ex: Suppose there are three fields.
Name , image Price and "Add" button
while click on "Add" button the same row added and save all to the database
I want to create a page that can create multiple aspx pages
Let me tell you the scenario
i have multiple clients and each slient has to send a report and number of clients can be any no. like 10, 20, 30 , 50 so its difficult for me to create a report page for every client. So My need is to create a page that can dynamically create a page suppose we say our mai page is like
Cliient Name TExtbox
textbox1 X
textbox2 X
textbox3 X
textbox4 X
textbox5 X
textbox6 X
submit button
now if we want 4 textboxes for client1 then user should click on X and two text boxes will omit for a particualrly that client and a page with 4 text boxes will create for client1
and similarly for client2 if for it we want 2 text boxes a page with 2 text boxes should be created
my problem is i want to generate gropu of texboxes by clicking add button(one row of textboxes).in my application i want to generate one complaint id.one customer may give two or more complaints at a time.suppose,he give two or more pnr numbers and their status andprioirty may differs.for this complaint i need to generate one common complaint id.how it is possible..?
View 7 RepliesReferred to your previous article of Dynamically creating textbox . Now i want to add labell also with them
Till now my code
protected void Page_Init(object sender, EventArgs e)
{
List<string> keys = Request.Form.AllKeys.Where(key => key.Contains("txtDynamic")).ToList();
List<string> labelkeys = Request.Form.AllKeys.Where(lkey => lkey.Contains("labeltxt")).ToList();
int i = 1;
foreach (string key in keys)
[CODE]..
Textbox are generating as i press button but label generate once than it doesnt.I debugged it i am getting count 0 in label
I have a dropdownlist whose values are int (actually they are string basically but they can be parsed. they are 1, 2, 3, 4, 5.. etc)
I want to create textboxes acording to the number of dropdownlist selected value. Lets say drop down shows 3 and I wanna create 3 textboxes. how can I do that.
My problem is that I have an ASPX page which contains an ASP:Table. The rows for the table is added dynamically on Page_Load. One column in the table contains TextBoxes, BUT when I type something on a TextBox and cause a postback, I am unable to find the value just entered. And above that the table is not displayed after the postback.Can anyone help me please? I want to keep the table viewstate with the modified textbox values, so that when i post back to server, I can intercept these new values.
View 3 RepliesI am generating Textboxes dynamically on selection of treeview node.
The problem is i have a button and on click of it postback happens and all the date entered in the textboxes and textbox it self is lost ;(
I have created a page with a textbox and a button, when you enter a number in textbox and click on button, the onCommand event generates dynamic textboxes with dynamic requiredFieldValidators in the placeHolder and a newbutton. Now when I click on newButton, it does not validated dynamically generated textboxes, it does postback and every dynamic object disappear. The sample code is provided below.
[Code]....
Here's my XML File :
<Validations>
<Pakistan>
<LABEL>
<BEFORE>ABN</BEFORE>
<AFTER>NTN</AFTER>
</LABEL>
<TEXTBOX>
[Code].....
Now i am saving the country of the user in Session["Country"] variable , also i am using two labels and two textboxes , initially the labels text is ABN and other Label text is ACN , and initially the Textbox length against ABN Label is 14 and and ACN Label is also 14 , now i want that whenever the Session["Country"] changes to Pakistan , it must read the configurations of Pakistan node in xml file and set the ABN Label text to NTN and the textbox which is after it must allow 18 numeric digits only instead of 14 numeric digits , same for ACN Label change to BCN and textbox which is after it must allow 22 numeric digits only instead of 14 numeric digits