C# Discussion Boards - CodeProject

Filter BindingSource to show only datarows containing errors

2-Jun-09 4:48

musefan wrote:
I mean a table you put at the side of your bed - Call it what you will

Well why didn't you say so.

A Call it what you will Table.

Using the correct names for Controls/Classes, can make the difference between getting an answer and getting the bird!!

Henry Minute

Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”

MarkB1232-Jun-09 2:19

MarkB123

2-Jun-09 2:19

Can anyone give advice on how to do this?

I am using a DeveloperExpress Grid linked to a BindingSource.

I import data into the bindingsource from a flat file then perform various checks to ensure the data is valid. If not, I set a column error for the row - as follows...

if (view.GetRowCellValue(intRow, "intX") == null || Convert.ToDouble(view.GetRowCellValue(intRow, "intX")) == (double)0.00)
{
dr.SetColumnError("intX", String.Format("{0}: Missing value.", view.Columns["intX"].Caption));
}

I have a button on the form to allow the user to filter the grid so that the grid will hide all valid rows to allow them to concentrate on fixing the invalid rows.
Can someone tell me how to apply a filter to the binding source to only show those rows with one or more column errors?

Many Thanks

Re: Filter BindingSource to show only datarows containing errors

Henry Minute2-Jun-09 2:50

Re: Filter BindingSource to show only datarows containing errors

2-Jun-09 2:50

Something like:

bindingSource1.Filter = "intX == null || intX == 0.00";

MarkB1232-Jun-09 3:17

MarkB123

2-Jun-09 3:17

Henry, Thanks for the reply.
I realise I can do that - the problem I have is that there is far more to the error checking than the small snippet I posted and it will not be feasible to do it this way. I could put in a dummy column and set the value to 1 within my error checking code on finding an error and filter on the dummy column = 1. However, I was hoping there was some way I could get a collection of the rows containing an error and use that to filter eg = extract all the ids of the rows with one or more errors into an array then convert that into a filter string... ID = id1 or ID = ID2...

Re: Filter BindingSource to show only datarows containing errors

Henry Minute2-Jun-09 4:52

Re: Filter BindingSource to show only datarows containing errors

2-Jun-09 4:52

Well in a .NET DataGridView you could iterate over the DataGridRowCollection and do that. I would assume the DevExpress version has the same functionality. Whether that is practical depends on the number of rows involved, from a time point of view.

MarkB1232-Jun-09 5:18

MarkB123

2-Jun-09 5:18

Hi Henry - that's the approach I've now gone for...

string strFilterString = "";
sp00134BindingSource.Filter = ""; // Clear any Prior Filter //
foreach (DataRow dr in this.dataSet_AT.sp00134.Rows)
{
if (dr.HasErrors) strFilterString += " or ID = '" + dr["ID"].ToString() + "'" ?? String.Empty;
}
if (strFilterString.Length > 4) strFilterString = strFilterString.Remove(0, 4); // Remove initial " or " clause //
if (strFilterString == String.Empty) return;
try
{
sp00134BindingSource.Filter = strFilterString;
}
catch (Exception Ex)
{ .....

Thanks for the pointer. Smile | :)

DataGridView row side by side [modified]

mjelten2-Jun-09 2:06

2-Jun-09 2:06

Hi!

i am adding rows to a datagridView with two columns, all my rows will be displayed as a long list, instead I want it to for example when ten rows has been added I want the next row to be inserted side by side to the first one.

Thanks,

Mjelten

Edit:
to make it clearer:

1---------------- 10---------------------
2---------------- 11---------------------
3---------------- 12---------------------

this is the structure..

modified on Tuesday, June 2, 2009 8:25 AM

The NULL Developer2-Jun-09 2:45

The NULL Developer

2-Jun-09 2:45

Add a new column after adding every 10 rows.

"Do first things first, and second things not at all."
— Peter Drucker.

mjelten2-Jun-09 3:01

2-Jun-09 3:01

that doesent work, beacuse I have tagged every row, with a variable..

Not Active2-Jun-09 2:55

2-Jun-09 2:55

The DataGridView is probably not the best control to use for this then. Consider something like a Repeater where you can specify the number of horizontal columns

only two letters away from being an asset

mjelten2-Jun-09 2:59

2-Jun-09 2:59

i thought that, but you do not think there is a way to get around it?

Not Active2-Jun-09 4:01

2-Jun-09 4:01

The way to get around it is to use the proper tools for the job.

only two letters away from being an asset

mjelten2-Jun-09 4:27

2-Jun-09 4:27

probably, but sometimes the time for doing the best solution is to long... i have to change a lot if I am going for a differnt dataholoder....

Henry Minute2-Jun-09 4:56

2-Jun-09 4:56

Depending on the layout of your form, and how you access the data, you could possibly make your own control, inheriting from DataGridView with the appropriate columns configured, and then create a new control every 6 (or whatever the number was) records. Complicated to keep track of though and could involve large numbers of controls.

Not Active2-Jun-09 5:25

2-Jun-09 5:25

And how is adding time and complexity a solution?

only two letters away from being an asset

Henry Minute2-Jun-09 5:30

2-Jun-09 5:30

I didn't say it was optimal. Simply that it was an approach. Sometimes when you're stuck, even a wrong answer can prompt you into getting it. Smile | :)

mjelten2-Jun-09 5:34

2-Jun-09 5:34

Thanks, I have to think about that. I will probably go with changing the structure of my solution, because i am trying to use datagrudview in a way that it should not be used.

Not Active2-Jun-09 5:24

2-Jun-09 5:24

Always time to do it over but never time to do it right.

mjelten wrote:
i have to change a lot if I am going for a differnt dataholoder

Then it probably wasn't architected well enough in the first place. You should be able to change the presentation without affecting that much. But anyway, good luck

only two letters away from being an asset

mjelten2-Jun-09 5:38