I have a PopupExtender that shows some information when a button in the GridView is pressed. This button exists on every row.
I also have a DropDownList present in every row that is populated by querying a database. I do this because it may be populated with different items depending on the row.
The problem I have is that the PopupExtender is slow to pop-up because of the RowDataBound event of the GridView that repopulates the DDLs from the database when the PopupExtender's associated button is pressed.
How can I make the PopUpExtender pop-up faster?
You may need to consider jQuery Dialog instead of Asp.Net ajax popup extender.
http://jqueryui.com/dialog/.
Also, do you really need gridview, You can try ListView control instead of GridView.
Related
I have a form with a subform that is a continuous form. I have a tab control that displays information related to the record selected in the continuous form; the tab control displays as soon as a record is selected/clicked. That all is grand.
However, after the user updates information in the tab control and clicks a button, I want to hide the tab control until a record is actually clicked on the continuous form.
What is currently happening is that the first record in the continuous subform is selected and I'd like for no record to be selected.
Is there a way to set the current record/selection of a continuous form to nothing or null? I've tried setting the bookmark on the continuous form to null in the button click event using Parent.SubApptList.Form.Bookmark = Null and that does not work for me.
Seems like it should be easy, but I can't figure it out.
After the button click event could you set focus to the parent form? Doing this would force the user to click on a record. Maybe I'm not fully understanding exactly what you're trying to do but if all you want is for nothing to have focus after a button event then that's the route I would take. That's assuming you don't having any on focus events for thr main form.
How can I transfer selected rows from datagridview to another datagridview in another form? I'm having trouble with this.
You should be able to do that in in one of gridview event handlers. I would use
RowCommand Occurs when a button is clicked in a GridView control.
But you can do it any other event that meets your needs. Both the Gridview must be on same page so you can access them from code behind. You can access any control on the page using code behind, including GridView. You should be able to add contents/remove contents as needed. Make sure you issue databaind on both gridviews so they are rendered fresh after the changes. So basically you need code behind :)
I want to have a repeater like DataView or ListView. The first column of each row (named User ID) should be read from a List, and for each user ID, the program should dynamically create three radio buttons like these:
Requirements:
The user must able to change selection of radio buttons.
When the user clicks the submit button, radio values be displayed using the info("") method.
I've already done this by using this example, but when I click the submit button, old selections are shown, and the form gets reset to those old selections.
This example code might be helpful.
ListView doesn't play very well with form components, but it may work if you call ListView.setReuseItems(true);.
i am working on vb.net.
When i click a button in one of the row in the gridview, i am called a function to delete the data of tha row. it is working but it is getting postback.
i have placed gridview inside asp updatepanel.
How to prevent postback.
Do you have made your UpdatePanel's UpdateMode="Conditional"? You can define AsyncPostbackTriggers to f.e. your delete-button(eventname is optional and for button click is default).
To delete your row you have to delete it from the gridview's datasource and then rebind it to it.
I am writing a program in VB.Net to manage text messages sent through an API. It allows you to view messages in a datagridview and filter by date, sent/unsent etc...
To load the messages I'm executing an SQL statement and retrieving a DataTable which then gets set as the DataSource for my DataGridView control.
The problem is that depending on the filters selected the user could be selecting a lot of records and it would take some time for the DataSource to update. I want to inform the user of this load time by providing a progress bar or label of some kind.
I have used progress bars before when looping through data but this is loading it all at once. I thought of displaying a label when the user clicks to load the data and then hiding it when the data is loaded. But this happens instantaneously even when the data is still loading.
Is there an event on the DataGridView I can use perhaps? Something like .DataSourceLoadStart and .DataSourceLoadFinished.
I know I'm just making those events up... but hopefully it makes it clearer as to what I want.
You could set the label to be visible when load is clicked and try the: DataGridView.DataBindingComplete Event to hide it, this event gets called when the binding is complete.
MSDN Link - DataBindingComplete
A little off topic but... I wonder if you could attach a AJAX update panel with activity/loading image to a gridview? I don't think I've ever seen it done but here's a great application for it.