I have a GridView which works perfect when it is not empty. Now when the source is empty I want to show an empty GridView and to be able to insert rows inside.
I have this code for the page_load event:
[Code]....
but I got the following error:
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
[Code]....
I have followed this thread
[URL]
and I have tried most solution and still I cant get the right results...I need a simple workable solution. I would like to display the header of a gridivew when it is empty
With reference to the following link: [URL] .....
I want to save data to a different table. My save is working fine but the challenge is that it saves empty cells as well.I will like to save only QTyDelivered cell with value. Any empty QTyDelivered cell should be ignored (which means the row of QTyDelivered cell that is empty will not be saved) .How can i achieve this?
I am using asp snippet for printing gridview i am getting this error
Control 'MainContent_GridView2' of type 'GridView' must be placed inside a form tag with runat=server
protected void PrintAllPages(object sender, EventArgs e)
{
GridView1.PagerSettings.Visible = false;
GridView2.DataBind();
[Code].....
I have setup my business object to have a create_date and edit_date members both datetime datatypes. My company want to display the create_date and edit_date fields in a gridview for each transaction. The problem i have is that after insterting a record it will have a valid create_date but no edit_date and when displayed in the gridview it defaults to datetime.minvalue (My default). How on earth do i show an empty field in my gridview for a null datetime field in the database?
I am using similar architecture to the Imar Spaanjaars example of a tiered solution. With a few small tweeks it has worked well for me for ages. I am passing a List<Database> to my object datasource which connects to my gridview.
I have a gridview with two bound fields. On clicking a button i want to display the values in first row of gridview in two textboxes. But if gridview cell is empty i am getting the text in textbox to which the value of cell is given as -' 'i know my problem will be solved if i use the template fields instead. But i want a solution while maintaining the bound fields ,if any.
View 2 RepliesThe datasource of the datagrid is a LINQDataSource which relies on the value of a dropdownlist. In addition, I want to use the footer to insert new records - so I'd prefer not to use the empty dataset template. I am trying to find a way to always display the footer regardless if the datasource is empty or not.
EDIT:
Is there a way to create an empty/invisible object of the type in the LinqDataSource?
If the gridview binds to empty dataset, I need to still show a gridview so that users can ADD more using the textfields in the bottom of the footer template. Since the gridview is empty it won't bind not allowing rendering of the <footer template> I guess I should create a empty dataset if the gridview is empty. How do I check for this and can this be done in GridviewRowEventArgs
View 5 RepliesI want to insert an extra row in the gridview in the RowDataBound event (or another place if thats possible). How can I do that?
The data in the row to be inserted is not part of the resultset, but rather to split the gridview in logical sections.
I am trying to insert a buttonfield at the end of the datagrid. I am using the following code. However, it is getting inserted at the beginning of the datagrid.
DataTable consolidatedDataTable = PortfolioManagement.Portfolio.GetConsolidatedPositionsDataTable(userName, portfolioName);
gridViewConsolidatedPositions.DataSource = consolidatedDataTable;
gridViewConsolidatedPositions.DataBind();
ButtonField buttonField = new ButtonField();
buttonField.Text = "Hedge with Stock Options";
gridViewConsolidatedPositions.Columns.Add(buttonField);
gridViewConsolidatedPositions.DataBind();
i need to display some text boxes, and have the ability for the user to "add another row"
i tried a datalist and a repeater, but it does not show anything at all, when the controls are blank.
<asp:DataList id="dlIso" runat="server" RepeatColumns="2" RepeatDirection="vertical" >
<ItemTemplate>
test</ItemTemplate>
</asp:DataList>
so in this case "test" does now show at all..
I am trying to fetch value from text box outside grid view to the footer row of the grid view.
View 7 RepliesIam using the Gridview control for inserting the records in Database i placed the controls in TemplateField tag like Textboxes and DropDownlist but when page executes nothing is displaying in the control Is there any way to get it work or i must have to define the datasource for the Gridview Control????
<asp:TemplateField ...>
<ItemTemplate>
<asp:DropDownList ..../>
And more textboxes like the above way but there is no Bound Field because iam going to insert the record in DB while placing the controls in Gridview Control
I have a table in my sql datablase with this items:
ID URL
.............
I need to populate programatically a GridView with that table but I need to add the string "http://" in the row URL to get something like this:
ID URL
..................
I have a gridview with 3 columns dropdown, textbox1, textbox2.
On pageload my gridview loads with one row i.e dropdown with databinding done with some values, empty Textbox, empty textbox2
i have add new row button
clicking on that i will get new row in gridview with dropdown with databinding done with some values, empty Textbox, empty textbox2
I have save button to save the gridview rows into DB.
Question:
I should not allow user to select same dropdown value in two different rows. How can i validate that.
I'm trying to generate a dropdownlist in a GridView. However, my dropdownlist seem to be empty and I'm not sure how to fix it. Here's my code for the dropdownlist in my GridView & it's SqlDataSource.
DropDownList in GridView:
SqlDataSource for DropDownList:
[Code]....
I'm writing a gridview in VB.NET that is bound programatically in the Page_Load function. I am binding the data in the 'If Not Page.IsPostBack Then..." structure. And as you can see, I'm using TemplateFields instead of BoundFields. And I need to access the e.OldValues in my RowUpdating function, but they come up empty.
Here's my code:
[Code]....
I bind data to GridView from SqlDataSource. GridView have <19 rows. But i want that all 19 rows are written. If Rows in SqlDataSource are empty it's must be empty in GridView but must be there!
View 2 RepliesI have a data bound column in grid view. When a particular value in a cell is getting processed I want to display an image in the cell.
View 2 Replieswhy if I write the following SQL SELECET under gridview or details view I statement get all the data under thelogin name :
SELECT * FROM CustOrder WHERE (CustomerName = @UserName)
While if I write the following INSERT statement it save all data but it does not save the
login name to database:
INSERT INTO CustOrder
ItemName, ItemPrice, Quantity, CustomerName, Status)
VALUES (@Username,@ItemPrice,@Quantity,@Username, 'New Order')
Im having trouble accessing controls inside the gridview. I have a formview control on a aspx page and inside this formview i have controls that are bound to a datasource. Which works hundred percent. Also inside this formview i have a gridview which i have created my own template. Gridview1 has 3 columns with textboxes in each column.
Column 1 - LogDate
Column 2 - LogBy
Column 3 - Number dialed
Now this is what im trying to do. I have a dial button inside formview1 along with 4 textboxes which has telephone numbers in it. When i click on the dial button i want the time to be populated into Textbox1 which is inside gridview1 and at the same time Textbox2 to be pupulated with the Username as well as the number must be populated into Textbox3 inside gridview1.
How to display empty GridView to insert new record if no data retreived for some record on the result from data table?Actually i am trying to give a user an option to add recrod from Gridview. On result of some query it is perfectly displaying data and a footer row with the insertion textbox but when there is no data in the gridview it is not displaying. It should display with footer having insert textbox.
View 5 RepliesI have a gridview and i wanted to add a row when the gridview is empty, so that the header would be shown anyway. I have read about it on the web but i can't quite understand where exactly should i add the row.
My grid is binded by a sqldatasource. I am already adding a second header for the grid (to display some filters, and they need to be shown even if there are no results so that the user can perform another "search"), on rowCreated event, so, where am i supposed to add the row? Which events are fired even if the gridview is empty?
provide an example to do that... "Hide column if row is empty" in Databound()
datasource could be .1
coulmn: id-value1-value2-value3
row: 1-4-3-NULL (output: hides row value3) because the value is NULL
.2
coulmn: id-value1-value2-value3
row: 1-4-NULL-NULL (output: hides row value2,value3)
I have a Gridview and I want to hide a column when empty. The code works then the column is in Boundfield but not in Templatefield. Can anyone show me the code of how to do it in Templatefield?
Here's my code using OnDataBound event:
protected void hideColumn(object sender, EventArgs e)