Windows Forms

DataGridView CheckBox issue!

1-Jul-07 20:07

How are you accepting data in masked text box? You can convert the input into your format.

For example you can say string.Format("{0:dd\MM\yyyy}",DateTime.Today.Date);

If this does not make any sense, you will have to send me some code of yours Smile | :)

validation

Bojja Lakshmi1-Jul-07 2:41

Bojja Lakshmi

1-Jul-07 2:41

Hi,

how i can validate a formula.

Formula contains columns of table and operators.

if suppose c1,c2,c3 are columns of table, c1 is of type string, c2 is decimal and c3 is int.

formula may be a+(b*c),or a*(b/c). I need to validate that formula. how i can

approach.if any one had done this plz send me the required code.

lakshmi

Re: validation

Paul Conrad13-Jul-07 12:59

Paul Conrad

13-Jul-07 12:59

Please clarify what a, b, and c are. Are they c1, c2, and c3, respectively?

"Any sort of work in VB6 is bound to provide several WTF moments." - Christian Graus

Re: validation

Bojja Lakshmi15-Jul-07 21:19

Bojja Lakshmi

15-Jul-07 21:19

Yes. a,b,c are c1,c2,c3 respectively.

pashitech30-Jun-07 6:29

30-Jun-07 6:29

hi all,
i am using data grid view in my windows application, where in which i have a checkbox for every row it generates
my problem here is i should find out whether the check box is checked or not?
on grid clicked event..
my purpose is i need to select all the row's values of checked checkbox
hope its understood
, please help me

prashanth

RepliCrux1-Jul-07 13:51

1-Jul-07 13:51

Hi Prashanth,

You can do the following: (case: if using data Binding)

foreach (DataGridViewRow row in dataGridView1.Rows)
{
if ((bool)row.Cells["select"].Value.Equals(true))
{
//Do Something
}
}

In the above case the DataGrid is bound to the following table:

private DataTable Table()
{
DataTable table = new DataTable();
DataColumn col1 = new DataColumn("select",Type.GetType("System.Boolean"));
DataColumn col2 = new DataColumn("Name", Type.GetType("System.String"));

table.Columns.Add(col1);
table.Columns.Add(col2);

DataRow r1 = table.NewRow();
r1["select"] = true;
r1["Name"] = "Something";

DataRow r2 = table.NewRow();
r2["select"] = false;
r2["Name"] = "nothing";

table.Rows.Add(r1);
table.Rows.Add(r2);

return table;
}

Hope that helps.

Cheers

pashitech1-Jul-07 17:06

1-Jul-07 17:06

thnx Mr.RepliCrux
but my question is!
i need to catch whether the checkbox in the grid or checked or not as soon as user checks any checkbox of grid.
hope u got me
please help me
thnx
prashanth

RepliCrux1-Jul-07 17:46

1-Jul-07 17:46

private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
foreach (DataGridViewColumn column in dataGridView1.Columns)
{
if (column.CellType == typeof(DataGridViewCheckBoxCell))
{
//Do Something
MessageBox.Show((string)dataGridView1.Rows[e.RowIndex].Cells[1].Value);

}
}
}

This one will do the trick

pashitech1-Jul-07 18:23

1-Jul-07 18:23

Thanks again Mr.RepliCrux
but for the last statement
e.rowindex.cells[1].value
its giving object reference is not set to instatnce of object exception.

FYI i am using VB.Net does it makes any change/diff here?

prashanth,
s/w Engineer,
Syfnosys.

RepliCrux1-Jul-07 18:39

1-Jul-07 18:39

Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick
For Each column As DataGridViewColumn In DataGridView1.Columns
If column.CellType Is GetType(DataGridViewCheckBoxCell) Then
MessageBox.Show(CType(DataGridView1.Rows(e.RowIndex).Cells(1).Value, String))

End If
Next

End Sub

This is how Vb.net code looks, The error you are getting might be because:
1. Your parser is going in that code before your datagrid is initialised.
2. I have said Cells(1) because there is some value in my Cell(1) in that row position. If there
is no Cell(1) in your datagrid you will get that exception

pashitech3-Jul-07 3:47

3-Jul-07 3:47

Thnx for ur reply
but the thing is,
i need to catch the checked state of checkbox of grid.
i mean like a normal checkbox (to which we can catch checked state)
i need to do for grid's check box
hope u got me
FYI i am using VB.Net2.0
thnx in advance
prashanth

RepliCrux3-Jul-07 12:49