I have created an application which uses a FormView with Select and Update commands, the formview will only populate when I pass it a parameter, however here is where the problem is. If I pass the formview a parameter but in my database there is more than 1 row I want to be able to choose which row populates the formview using something like a dropdownlist as a formview only holds 1 row.
Since there's no code, I'll answer with words as well:
Click on FormView control
Go to properties and set AllowPaging to true // Adding this property generates the paging interface automatically, which will display numbers for each record return from your database
Related
I placed five dropdownlists and three textboxes in asp.net webpage. The value select in dropdownlist and insert in textboxes are the values to be insert in query for where condition. Now the problem is that when I press search button for execution the values from text boxes are inserted in query but the dropdownlist values remain empty, and the result is not showing. I check code for dropdownlist like:
ddlChannel.SelectedValue;
ddlChannel.Text;
ddlChannel.SelectedItem;
but not any selected value is inserted from the query. Either problem in on pageLoad. I use Page_Prerender method to load dropdownlist from database through query execution. Any idea what the problem might be?
the selected values from your dropdownlists are most likely reset on postback ( when you click search button )
you can use the following code to avoid resetting your dropdownlists
if(!Page.IsPostBack)
{
//Bind dropdown lists logic
}
you have to set controls autopostback property true, eventvalidation set false on page pl
I have a GridView which is completely user defined. The first column of the GridView is from the ListBox1. The headers are defined using ListBox2.
There fore I need to update rows of the GridView with some integer value and make sure the Gridview holds that value until a button is clicked.
Once the button is clicked I want to read each columns of the GridView that has values entered and create a table in the database with the headers names as columns and just replicate the GridView as table in database.
I have attached a screenshot of my GridView. Kindly help me fix this problem.
There are 2 key things to implement UPDATE logic in a GridView
In the GridView markup, you have to add an eventhandler for OnRowUpdating event
<asp:GridView ID="XXX" runat="Server" .....
OnRowUpdating="UpdateRecord" ..........>
Then you need to implement this "UpdateRecord" method referred above with your custom code which will basically retrieve the data from the grid row and update it to your datasource
You can refer to some sample code of how this can be achieved here
To point out again, in your case, since you want to dynamically create the table as well, you will need to additionally do that as well. Personally, i have no clue why you would go with such a design but in absence of any information, i assume you know best.
I'm using : 1.A Gridview 2.SqlDataSource to bind set the table data information to gridview.
I want to get from the edited row in gridview the value of a cell from database of the same row.
thanks
In that case, simply on the edit click, grab the id field of that row (maybe it is hidden)
and bind another gridview by that same id.
I am assuming these tables join by id.
Another option you can use is DataKeyNames Gridview property. Check GridView.DataKeyNames Property
In my website I am dynamically binding the datasource to the grid based on the value in dropdownlist.
I want to edit and update the values in grid view and the respective updations should be done in the original database.
How can I do that?
In the most basic and direct way, you use the OnUpdateCommand event of the datagrid to invoke a server site handler. That handler will receive a DataGridCommandEventArgs parameter containing an Item property which is a grid row with updated values. Retrieve key and new values from that row and build a corresponding update command.
do you know how to bind dropdownlist vai datasourase?
and witch data sourse you use tell me first.
else you just make a SELECT query and fill the dataset after that you you must have to bind dropdownlist like this....
ds = dropdownlist.DataBind();
i think this help you.......
else you can tell me if any problem occure in this code..........
I have a simple app I am messing around with its a basic Master/Details layout.
The details panel is actually a tab panel and on one of the tab panels it has a GridView. Within that grid view it shows the "current" in database information with all cells as read only.
alt text http://lh4.ggpht.com/_JU1W2P96pD4/TAeonNNYXgI/AAAAAAAAAq0/Y_-Kse7VObE/ExampleA.jpg
I then have an add button that inserts a row into the GriView and allows the user to enter some information. The first item in my GridView is a DropDownList, which is populated from an ObjectDataSource. This drop down is basically my unique index and there can only be one selected value per GridView.
alt text http://lh3.ggpht.com/_JU1W2P96pD4/TAeonIF3DdI/AAAAAAAAAq4/JhfOTsHgsf8/ExampleWithDropDown.png
What is the best way to remove the values from the list that are already in the GridView? Do I just need to remove the data source and add a OnDataBinding method that iterates through the grid view and generates a valid list of values?
I can't use a service method because if the user adds two rows they would have the option to insert duplicates description types.
Just want to make sure there is not a better way to do this.
Keep the object datasource, which I am assuming is an IEnumerable object, in a Session variable. When someone selects a certain value remove that value from the list in the session variable. Whenever they activate the form where the drop down list is displayed simply rebind the control to the list in the session variable. It will be easier than looping through the grid every time the user adds an entry.