Wil
I am using asp.net. How do you "catch the control in the datagrid after it's bound and remove it (or else the grid will display a broken link image)". That is what I have been trying with no luck.
thanks
tim
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Thumbnail into a Datagrid C#
I need to place a thumbnail into a Datagrid's cell when the picture path exist in my database and place the text "N/A" when the picture path field is NULL in my database.
thanks
tim
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Answers
Hi,
Assuming that the ASPImage has an ID you could take care from code behind and set visible to true or false, depending on the given case ... like checking "If File Exists" before deciding if the image should be visible or not:
if (File.Exists(Server.MapPat
{
// ... Image Visible = True
}
else
{
// ... Image Visible = False
}
}
Best regards,
Raisor
yep, Raisor's plan works, or you could simply just clear the cell of the image control; I'd probably do it in the PreRender method of the datagrid:
private void DataGrid1_PreRender(object
{
foreach (DataGridItem itm in DataGrid1.Items)
{
Image img = (Image)itm.Cells[1].Contro
if (img.ImageUrl == null)
{
itm.Cells.Clear();
}
}
}
let me know if you have troubles.
wil
...oops, let's try that again :P.
private void DataGrid1_PreRender(object
{
foreach (DataGridItem itm in DataGrid1.Items)
{
Image img = (Image)itm.Cells[cell number that holds the image control].Controls[1];
if (img.ImageUrl == null)
{
itm.Cells[cell number that holds the image control].Controls.Clear();
}
}
}
wil
Hi,
@Headspace >>> ... do you mean you want to loop through all recordsets on render?
I'd rather think to check on a page to page basis which would be limited to the specified "records-to-display" amount ... the "if (File.Exists(Server.MapPat
Server.MapPath("images\no-
... instead of leaving image source leading to a non existing image!
Best regards,
Raisor
@Raisor: ...ummm, nope. I mean to iterate all of the rows in the datagrid after it has been databound, and either remove the empty image control before the grid is rendered, or (as in your example) set the image control to not visible. I'm not really sure how you thought i was looping through a dataset from my example, but i apologize if there was any confusion. I hope this clears it up : ).
wil
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by: HeadspacePosted on 2006-08-11 at 09:26:57ID: 17297443
...assuming that this is asp.net, you can use a template column in the datagrid to hold an asp image control, and bind the image to the data:
<asp:Image ImageUrl =<%# DataBinder.Eval(Container.
as for the "N/A", you'll either need to populate the database with a path to a custom "NA" thumbnail (rather than NULL, which would be the easiest), or catch the control in the datagrid after it's bound and remove it (or else the grid will display a broken link image).
wil