ListView is not updated after delete

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In asp.net Application I Have a problem, after deleting a row from listview the listview is not updated ,the listview is in updatepanel,but in saving no problem.

My code is
protected void lstExchangeHistoryView_ItemCommand(object sender, ListViewCommandEventArgs e)
{

if (e.Item.ItemType == ListViewItemType.DataItem)
{
Label lblRateHistoryID = (Label)e.Item.FindControl("lblRateHistoryID");

int _RateHistoryID = Convert.ToInt32(lblRateHistoryID.Text);
switch (e.CommandName)
{

case "Delete":
{
_OperationMode = "Delete";
ExchangeHistory objExchangeHistory = new ExchangeHistory();
if(_RateHistoryID!=0)
{
objExchangeHistory.Delete(_RateHistoryID);

}
else
{
ListViewDataItem dataItem = (ListViewDataItem)e.Item;
lstExchangeHistoryView.Items.Remove(dataItem);

}

Display();

UpdatePanel2.Update();
break;
}
}

}

// btnRetrieve_Click(null, null);
}

Posted 25-Jul-11 21:27pm

Shibiny

Updated 25-Jul-11 22:58pm

v3

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Shahriar Iqbal Chowdhury/Galib · Accepted Answer · 2011-07-25T22:21:00

Solution 1

Hi,

You have to Bind the data source again and you have to update the UpdatePanel after delete, If your UpdatePanel ID is UpdatePanel1 than,

//code for delete a row from listview
lstExchangeHistoryView.Datasource=YOUR_DATA_SOURCE;
lstExchangeHistoryView.DataBind();
UpdatePanel.Update();

Posted 25-Jul-11 22:21pm

Shahriar Iqbal Chowdhury/Galib

Comments

Shibiny 26-Jul-11 4:42am

Thanks For ur Help

But a Error occured

The Update method can only be called on UpdatePanel with ID 'UpdatePanel2' when UpdateMode is set to Conditional.

Now code is
protected void lstExchangeHistoryView_ItemCommand(object sender, ListViewCommandEventArgs e)
{

if (e.Item.ItemType == ListViewItemType.DataItem)
{
Label lblRateHistoryID = (Label)e.Item.FindControl("lblRateHistoryID");

int _RateHistoryID = Convert.ToInt32(lblRateHistoryID.Text);
switch (e.CommandName)
{

case "Delete":
{
_OperationMode = "Delete";
ExchangeHistory objExchangeHistory = new ExchangeHistory();
if(_RateHistoryID!=0)
{
objExchangeHistory.Delete(_RateHistoryID);

Display();//Bind the data source To ListView
UpdatePanel2.Update();

}
else
{
ListViewDataItem dataItem = (ListViewDataItem)e.Item;
lstExchangeHistoryView.Items.Remove(dataItem);

}

Display();

UpdatePanel2.Update();
break;
}
}

}

}

Shahriar Iqbal Chowdhury/Galib 26-Jul-11 6:35am

navigate to *.aspx and set UpdateMode="Conditional" to UpdatePanel2

Shibiny 26-Jul-11 7:38am

I Try Thhis now there is no error but still listview is not updating.pls help me

Shibiny 4-Aug-11 1:41am

i still have this same problem in some pages of same application .pls help me

dhawaljoshi · Accepted Answer · 2011-07-25T23:21:00

Solution 2

listView1.Items.RemoveAt(0);

try doing this because when you are using listview no need to use listView1.refresh(); has no meaning as on adding or deleting it automatically updates the listbox.

Posted 25-Jul-11 23:21pm

dhawaljoshi

Comments

Shibiny 26-Jul-11 5:32am

Sorry My problem is when Deleting An Item From Listview The Listview is not updated.But the listview is updating When use response.redirect instead of Display(), but Display() function is working after delete

dhawaljoshi 26-Jul-11 5:42am

ya then if u have used display function then i guess it is being misplaced by u ....if after deleting in any case display is called than data will be displayed.

Shibiny 26-Jul-11 6:02am

Yes, I use Display() after Delete

Shibiny 26-Jul-11 6:56am

In Display() Function Have CurrectDatas in Dataset And Bind That Data toListView .But When Display The ListView Show Old Datas.But when We Use Response.redirect NO Problem.And In Save I Use The Same Display() ,that is Workig