Hide table row delete button

I have a table with row 1 visible and row 2 that appears when the "Add a New Row" button is clicked. If the user clicks the "Delete Last Row" button, the last row is deleted. I want the "Delete Last Row" button to only be visible when there is more than one row visible.
This script does not work:
if (Page1.Subform2.Table1._Row2.count =< 1){
this.presence = "visible";
else {
this.presence = "invisible";

Hi,
Is this a code fragment from the click event of the "Delete Last Row" button?, I think you just need to swap the "=<" to "<=", this should have given you a syntax error, or is this just from getting the code into the forum?,
Anyway, try this in the delete button click event;
Page1.Subform2.Table1._Row2.removeInstance(Page1.Subform2.Table1._Row2.count - 1);
if (Page1.Subform2.Table1._Row2.count <= 0)
this.presence = "invisible";
and this in the add button click event;
Page1.Subform2.Table1._Row2.addInstance(true);
if (Page1.Subform2.Table1._Row2.count > 0)
DeleteLastRow.presence = "visible";
Bruce

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Hi Santosh, it's you again! ;)
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Hi Sureshkumar,
1. Create a value attribute named select of type boolean.
2. Bind the checked property of all the checkboxes to this attribute.
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Warm Regards,
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Good Day All;
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How to add a delete button on each row of the table.

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Edited by: 917391 on 2012-3-21 下午6:53
Edited by: 917391 on 2012-3-21 下午10:07
Edited by: 917391 on 2012-3-21 下午10:16

i don't use the adf BC, so it is not a VO. it's just a service method that return a list.
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Sorry, meant to reply to original post. Message was edited by: dohanlon

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Hi,
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Thanks. Kim

Hi Kim,
i am sorry but I dont have a sample code for this .. but yes i can tell you a very simple logic here that should work fine ..
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I hope this helps and if it does please do award points
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I applied all of Winston Prakash's tips to my project table (http://blogs.sun.com/winston/category/Creator), but my table is not the only component in the page, so I had to use Virtual forms.
When I add the "Delete" button, i have to put it on a Virtual Form. I followed the steps on the multi selection table and the "Adding a button panel to the table component header" post, but when I select a row, the JavaScript works well (the row changes to yellow)... but the action code gets a :
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It works for me. Is it the Delete button in the Toolbar that doesn't work, or the Delete key in the keyboard, or what? Doesn't any other way of deleting a message work either (e.g. Edit > Delete)?

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It does not show up in a search of Help - in fact, there isn't even a mention of "unhide" despite there being a command for it!
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As we want to use such a formula, it would be odd to destroy its ability using a different formula in a standard bottom row.
More, in a footer row, we may use shorter formulas than in other rows.
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This feature is also described in the named resources.
Yvan KOENIG (from FRANCE vendredi 3 octobre 2008 18:21:13)

Hide table row delete button

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