I have a grid view that, on selected index, will populate a details view. If the selected index happens to have multiple IP Address's I want to add additional fields to display them. They don't need to be databound since I know the data. I'm using the code below to create the additional template fields. This is done in the Data Binding event.
This works until I select a different row in the grid view, then no data is displayed in the details view. My theory is that it's trying to bind the data but there are a different amount of values returned from the database than controls to put them in. I guess is there an easier way to do this?
// Check for multiple IP
countIP = devicesDetails_CountIP(devicesDataKey);
if (countIP > 1)
{
TemplateField IPAddress2 = new TemplateField();
devicesDetailsView.Fields.Insert(0, IPAddress2);
}
Recently I came across this question, so here is a link that may be of help for future visitors
Create DetailsView from codebehind
Related
I have a grid view. When I bind the grid view data from database, all data has to be bound at the time. It is affected to the performance of my application. I am always used index on grid view. So I want that when I clicking each index of grid view, the particular count of data has to return from database. Can any one help for this issue?
What i got from question is that right now you are pulling all the data from a table and binding with the gridview, which of-course is not good and you want to pull only the required amount of data depending on the current page number. Please see the following article for the solution.
ASP.Net Grid View Custom Paging
I googled this question in many forms but couldn't find an answer applicable to me also..
I have a list view box in windows forms application and in that I add some items in runtime like the code I shown below:
lvinfo.Items.Add("Script executed successfully in " + dbname + " database");
The same code I am using several times for updates of execution and this works fine when I give the view as list or something else...
And also I am not clearing these items at any point of time in my code..When I googled I could find the answers related to clearing items..
My problem is when I set view property as Details, the text/content in the list view box is not displayed..or it is hidden..
EDIT:
I tried
columnHeader1.AutoResize(ColumnHeaderAutoResizeStyle.ColumnContent);
Any response would be really appreciated..
I guess it is because you haven't add any columns to your list view. In details view you should add at least one column to display your item.Try this before adding your items:
listView1.Columns.Add("myColumnHeader");
Have you created column headers for your ListView as the documentation states:
If your ListView control does not have any column headers specified
and you set the View property to View.Details, the ListView control
will not display any items. If your ListView control does not have any
column headers specified and you set the View property to View.Tile,
the ListView control will not display any subitems.
and
Although columns are only displayed in the details view, subitems
without column headers will not display in either the details view or
the tile view.
Theres also an example further down the page for setting up column headers
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 need to display the list one by one in the same line.
It mean instead of binding the value in the row i need bind it in new column first row value. Is that any control available to view the item horizontally .
i have my data in data table.
I'm not sure if I understand your question correctly but I think what you want to use is a repeater. This way you can use whatever markup you want in the itemtemplate to determine what the layout of your data is when it is displayed to the user. You could do something as simple as <%#Eval("WhatEver")%> and you would get horizontally repeating values of the WhatEver column.
I have a TextBox entry field where the user will enter a integer value. And then there is a "Create" button, which when clicked upon must generate a Table with 2 columns :
"Name" and "Email" being the column headers.
I want each row to have a textbox in each of these columns.
All of this has to happen after the button is clicked. I have discovered that if you dynamically add a control in ASP.NET(I am using C#) then the controls are lost during postback. And I don't know how to prevent that from happening.
Can somebody please give me some ideas regarding how to go about adding rows dynamically to a table (I tried using the asp.net Server side table control but ran into the "lost-during-postback" problem - can I try with something else like a gridview ? but afaik a GV will not work without data bound to it )
Point to note is that my table has textboxes for user entry and it is not for showing data ..rather it is for accepting data from the user which will be later used to persist details to the database.
Dynamic Controls
That's involved. Here's an interesting article on the issue of dynamic controls.
I think normally if you create dynamic controls then you're responsible for recreating them on postback; however the article contains a way to use the Init event if it's copacetic with your app.
Edit:
or Regular ASP.NET Controls
You can use data bound ASP.NET controls like: DataList, Repeater, GridView, etc. (You can put text boxes and all other kinds of controls into them for repeating in each row - or "item") and bind values to it. If you need to perform some processing on the user input first, then generate an internal Array, List, Dictionary, DataTable etc. (your choice) and bind that data as a data source to the ASP.NET control of choice.
aspnetControl.DataSource = myDataTable;
aspnetControl.DataBind();
or
aspnetControl.DataSourceId = "name_of_control";
There are various ways to assign a data source.
This way you won't run into the same problems as with dynamic control creation; however there is a lot to learn to facilitate this way too.