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
I 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?
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]....
Grid View I added a function and then called it in the following event.
private void ShowNoResultFound(DataTable source, GridView gv)
{
source.Rows.Add(source.NewRow());
gv.DataSource = source;
gv.DataBind();
int columnsCount = gv.Columns.Count;
gv.Rows[0].Cells.Clear();
gv.Rows[0].Cells.Add(new TableCell());
gv.Rows[0].Cells[0].ColumnSpan = columnsCount;
gv.Rows[0].Cells[0].Text = "No Data Found";
}
protected void AppList_Selected(object sender, SqlDataSourceStatusEventArgs e)
{
if (e.AffectedRows == 0 )
{
ShowNoResultFound(AppList, GridView1);
}
}
It displays the following error The type or namespace name 'DataTable' could not be found (are you missing a using directive or an assembly reference?
ListView
Added the following. It shows the message but not the header. Also tried adding ShowHeader="True". It it not allowing it.
...
<EmptyDataTemplate>
Sorry, no data to display.
</EmptyDataTemplate>
</asp:ListView>
I am using asp snippet for printing gridview i am getting this errorÂ
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 an ASP.NET Panel with various controls along with Gridview. I have to send the panel along with the gridview as pdf to users email on button click. Everything is working fine but the Gridview is missing its headers and footers in pdf.
Code:
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=Panel.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
[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.
How I can show header/footer of Asp.Net Gridview with empty data source?
View 1 Replieshow to make fixed header when data is empty
View 3 RepliesI 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 Replieshow to display a header of gridvew as a 3D view color Header?
View 14 RepliesScenario:
I have a Gridview where I want to handle the Sorting in a custom control that I've added to the header.
I've added this control to my GridView's Header via OnRowCreate event handling. I want the Sort Expressions to persist session to session (via Webparts Personalization)
Here is what I have for adding the custom header control to the GridView Header
[Code]....
This works out well for adding the control, but I can't get anything to persist because these controls are creating initially via postback (per the event) and re-created on all subsequent postbacks. I can't add an If(!IsPostback) because the controls are initially created on the gridview's postback (well at least thats how it's acting when I put it in there) If I were to add this control via the ASP page, not via the Codebehind, I would be able to persist the control. If I try to treat it as though everything is setup correctly, and assign my custom control's controls to [Personalizable], I get a runtime error telling me that I can only have webpartzones in or before Page_init (I'm guessing this is due to when/where the
gridview hits the OnRowCreate event). If there is some fundimental logic I'm missing, or best practices that I'm moving away from,
is there anyway i can add in the gridview in header column name a button instead of label ?
column name 1 column name 2 column name 3 button
i am using checkbox column in item template for the button ,i wish after selecting checkbox for some row to click on the button on the header !!
I am using the following code to change the header based on the session variable
[code]....
<asp:DataGrid ID="DataGrid1" runat="server" DataKeyNames="REC_NO" BorderColor="White"
CellPadding="2" AutoGenerateColumns="False" Font-Names="Verdana" CssClass="table table-striped table-bordered table-hover">
<Columns>
<asp:BoundColumn HeaderText="REC No" DataField="REC_NO" Visible="False"></asp:BoundColumn>
<asp:BoundColumn HeaderText="Cheque No" DataField="CHEQUENO"></asp:BoundColumn>
<asp:BoundColumn HeaderText="District" DataField="EDISTRICT_NAME"></asp:BoundColumn>
[Code] ....
I am using a Gridview with datasource is a List. How can I show the header if the List is null or for a empty gridview?
View 4 RepliesHow to pass gridview particular column values to another page's table header...
View 1 Replies i have a gridview bound to sql datasource with template fields binding the columns. I have set the Header Style to a css class. I have 3 columns not bound to data as Add, Edit and Delete. When I set the text color to white for the header only the non bound columns go white. The bound columns are BLUE like hyperlink. Any one know a way round this. (If I set the style in the gridview the all columns are white. Want to set in external css file).
[Code]....
The 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 am using Grid view. when ever bulk data is there in Gridview, Header and footer must not be move..
how can i do that.
I have GridViews in mostly all web-pages. If data rows are too much then by scrolling down the grid, header misses.
How to Freeze GridView Header like we do in MS Excel?
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'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]....
