I want to use a AsyncFileUpload in a grid view and each record must have a AsyncFileUpload individually. In addition user must be able to upload his/her file for each record.
Now how can i access AsyncFileUpload in the grid view and check it if it has a file or not?
For common file upload i have used the below cod:
((FileUpload)GridView1.Rows[idx].Cells[0].FindControl("FileUpload1") as FileUpload).HasFile
However, it is not acceptable in this situation.
Is there any way to access this Ajax controller in a grid view?
on your asyncfileupload bind OnUploadedComplete event to the method
OnUploadedComplete = "FileUploded"
code:
protected Sub FileUploded(object sender, EventArgs e)
Dim fu AjaxControlToolkit.AsyncFileUpload
Dim row As GridViewRow = CType(fu.NamingContainer, GridViewRow)
Dim idx = row.RowIndex
fu = ctype(sender,AjaxControlToolkit.AsyncFileUpload)
If fu.HasFile then
--do something--
End If
End Sub
c#:
protected void FileUploded(object sender, EventArgs e)
{
AsyncFileUpload fu = (AjaxControlToolkit.AsyncFileUpload)sender;
GridViewRow row = (GridViewRow)fu.NamingContainer;
string idx = row.RowIndex.toString();
}
Related
I'm new to all of this code, so please be patient.
On my gridview, I am trying to make it so, once I check on of the checkboxes, the others get greyed out, making it impossible to select another. How would I code this?
Thanks in advance.
PS: I'm using vb, rather than C#.
Edit: Here is the code I want to run.
Protected Sub btnOK_Click(ByVal sender As Object, ByVal e As
System.Web.UI.ImageClickEventArgs) Handles btnOK.Click
Dim TxtbxID As TextBox
Dim RB As System.Web.UI.WebControls.RadioButton
For Each row As GridViewRow In GridView1.Rows
RB = row.FindControl("select")
If RB.Checked Then
Me.txtHiddenProblem.Text = row.Cells(3).Text & " on " & row.Cells(5).Text
TxtbxID = FormView1.FindControl("ProblemTextbox")
TxtbxID.Text = txtHiddenProblem.Text
End Sub
Take a look at this article: http://www.ezzylearning.com/tutorial.aspx?tid=5187857
It has some lines of code which help you determine the particular gridview row the checkbox element was associated with...
public void chkStatus_OnCheckedChanged(object sender, EventArgs e)
{
CheckBox chkStatus = (CheckBox)sender;
GridViewRow row = (GridViewRow)chkStatus.NamingContainer;
//other code
}
Now all we need to do is when the checkbox element is checked, iterate through the grid, find the checkbox, and disable them if its not the same as the one which caused the event...
I'm having a problem with a Web Control that is dynamically created and inserted in my page. I create a couple of LinkButtons, depending on the data of the search that was made, and I'm trying to add an Event Handler to each of the Buttons, so it would filter the result.
The controls are initialized properly, but the event is never fired.
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
Controls.Clear()
Dim btn As Controls.LocalizableLinkButton
For Each element As Generic.KeyValuePair(Of String, ResultFilterData) In m_list
btn = New LocalizableLinkButton
btn.ID = m_Name & "$lnk" & count
btn.Label = element.Value.Label.Append(" (" + CStr(element.Value.Count) + ")")
btn.CommandArgument = element.Value.Key
AddHandler btn.Click, AddressOf Me.btn_Click
Controls.Add(btn)
Next
End Sub
Since this code is in Page_Init all the controls should be recreated on a postback. (The LocalizableLinkButton is just an extension of a LinkButton to add multilingual features to the text).
The problem is that the method btn_Click is never called. The Link Buttons are properly initialized on the callback, with the same ID's as before. But the event doesn't fire.
I'm using ASP.Net 2.0
Any ideas?
I finally figured out the problem ASP.NET had with my Link Buttons.
The error was in using a '$' sign in my ID for each LinkButton. ASP.NET apparently uses the $ sign to build the control hierarchy when it creates the Postback Javascript. Therefore it thinks that the LinkButtons are nested within a control that does not exist. And so the events aren't fired of course.
Once I removed the $ signs it worked properly.
You probably want to put this piece of code in the Page_Load and see. It's generally advised not to access controls in this Page_Init as there is no guarantee of the controls been created at this stage.
I'm no VB guy but i put this into the codebehind of the default.aspx and it works fine.
protected void Page_Load(object sender, EventArgs e)
{
Button button = new Button();
button.Click += new EventHandler(button_Click);
button.Text = "test";
Form.Controls.Add(button);
}
void button_Click(object sender, EventArgs e)
{
throw new NotImplementedException();
}
I am trying to access a control inside a Repeater. The control is inside the <ItemTemplate> tag. I am using FindControl but it's always coming out Null.
What am I doing wrong?
My guess is that FindControl can only be used in record-level events such as ItemDataBound:
protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
(ControlTypeCast) e.Item.FindControl("myControl")).SomeProperty = "foo";
}
I'm guessing that you're trying to find a control at the wrong point in the page lifecycle. The ItemDataBound event is where you need to look for it.
This example is in vb.net, but I'm sure you get the idea.
Protected Sub rp_items_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles rp_items.ItemDataBound
If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then
Dim someLiteral As Literal = e.Item.FindControl("someliteral")
End If
End Sub
In most cases, spelling the control name wrong :) It may also be that you are searching for a control that exists within another container. Can you post your code?
for (int i = 0; i <= repeater1.Items.Count - 1; i++)
{
Button delete = (Button)repeater1.Items[i].FindControl("btnDelete");
delete.Visible = true;
Button edit = (Button)repeater1.Items[i].FindControl("btnEdit");
edit.Visible = true;
}
Vb.net
For i As Integer = 0 To Repeater1.Items.Count - 1
Dim CmbTyp As DropDownList = DirectCast(Repeater1.Items(i).FindControl("DropDownList1"),DropDownList)
Dim SeatN As Label = DirectCast(Repeater1.Items(i).FindControl("label1"), Label)
styp = CmbTyp.SelectedItem.Text.Trim
sNo = SeatN.Text
Next
Try This
For vb.net
CType(e.Item.FindControl("myControl"), Literal).Text = "foo"
For c#
[Literal]e.item.FindControl["myControl"].Text="foo";
Is it at all possible within a ListView ItemDataBound event handler to gain access to the full DataRow for that event? I need to do a lot of processing for the entire row on binding, but using data item values in the datarow that I am not actually using in the display itself.
Try this
DataRowView dr = (DataRowView)DataBinder.GetDataItem(e.Item);
using
dr.Item.ItemArray you can access the entire row.
Perhaps try to use the ListViewDataItem property to access the properties of the underlying data object to which the object is bound. The ListViewDataItem property is only available during and after the ItemDataBound events of the control and usually corresponds to a record in your data source object.
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.listviewdataitem.aspx
Below is an example.
protected void listProducts_ItemDataBound(object sender, ListViewItemEventArgs e)
{
if (e.Item.ItemType == ListViewItemType.DataItem)
{
ListViewDataItem dataItem = (ListViewDataItem)e.Item;
string prodtype = (string)DataBinder.Eval(dataItem, "ProductType");
// ...
}
}
I have a ListView control and I have added a DataBound event (don't know if this is the correct one) to the control.
I'm wanting to access the data being bound to that particular ItemTemplate from this event, is that possible?
C# Solution
protected void listView_ItemDataBound(object sender, ListViewItemEventArgs e)
{
if (e.Item.ItemType == ListViewItemType.DataItem)
{
ListViewDataItem dataItem = (ListViewDataItem)e.Item;
// you would use your actual data item type here, not "object"
object o = (object)dataItem.DataItem;
}
}
Why they made this so different for ListView still sort of puzzles me. There must be a reason though.
A little late, but I'll try to answer your question, as I had the same problem and found a solution. You have to cast Item property of the ListViewItemEventArgs to a ListViewDataItem, and then you can access the DataItem property of that object, like this:
Private Sub listView_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.ListViewItemEventArgs) Handles productsList.ItemDataBound
If e.Item.ItemType = ListViewItemType.DataItem Then
Dim dataItem As Object = DirectCast(e.Item, ListViewDataItem).DataItem
...
End Sub
You could then cast the dataItem object to whatever type your bound object was. This is different from how other databound controls like the repeater work, where the DataItem is a property on the event args for the DataBound method.
Found a workaround, I created a method to format the data how I needed and called it from the markup using:
<%# doFormatting(Convert.ToInt32(Eval("Points")))%>
The data that is used for the current item can be found from the EventArgs.
So from the RepeaterItemEventArgs e we can access the current item by looking in e.Item.DataItem.
protected void listView_ItemDataBound(object sender, ListViewItemEventArgs e)
{
if (e.Item.ItemType == ListViewItemType.DataItem)
{
var currentItem = e.Item.DataItem;
}
}