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.NET Forum / Windows Forms / WinForm General / January 2007The amazing, vanishing programmatically-entered data in my DataGridView
I'm trying to automatically enter some data into a row when the user first enters the row. So I created a RowEnter event handler that contains several statements like the following: _dataGrid.Rows(rowIndex).Cells(columnName).Value = newData When I do this, data actually shows up in the row when I click the row. But as soon as I tab away or click a button elsewhere on the form, the data vanishes. If I hand-enter the exact same data, I don't have this problem at all (I can click anywhere else on the form and the data remains). Anyone know what could be causing this? Thanks, -Dan Did this really need to be cross-posted to all these newsgroups? Are you writing this in C# or VB.NET because you posted to both newsgroups (among others). > I'm trying to automatically enter some data into a row when the user > first enters the row. So I created a RowEnter event handler that [quoted text clipped - 14 lines] > > -Dan Hi Scott, I didn't realize cross-posting was bad form. It seemed like my question was relevant to all four groups, and it was not specific to VB.NET or C#. I could see readers of any of those groups benefiting from any answers I get, and I figured getting more people involved in the discussion would be more likely to result in helpful answers. Please tell me, What's wrong with that? Thanks, -Dan > Did this really need to be cross-posted to all these newsgroups? Are you > writing this in C# or VB.NET because you posted to both newsgroups (among [quoted text clipped - 18 lines] > > > -Dan Daniel, As you use bounded data, than put your data in the source where your data is in as you use Microsoft complex data controls. Cor > I'm trying to automatically enter some data into a row when the user > first enters the row. So I created a RowEnter event handler that [quoted text clipped - 14 lines] > > -Dan Cor, I see what you're getting at, but I'm not quite sure how to do this. The DataBoundItem property for the new row is apprently "Nothing." So I get a NullReferenceException if I try to set any values. It's as if the new row hasn't "registered" yet. Thanks, -Dan On Jan 23, 9:22 pm, "Cor Ligthert [MVP]" <notmyfirstn...@planet.nl> wrote: > Daniel, > [quoted text clipped - 21 lines] > > > -Dan Okay, well if I use the DataSource property for the DataGridView, then I can access the DataRowView for the row and set the values. But it doesn't solve my problem. If I click or tab away from the form, it still clears the row. Any other ideas? -Dan > Cor, > [quoted text clipped - 35 lines] > > > > -Dan Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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