Datagrid new row update problem.

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

BFX - 04 May 2005 09:43 GMT

Hi All,

I have datagrid with binding on dataset
this.grdMachineType.DataMember = "MachineTypes";

this.grdMachineType.DataSource = this.dsMachineTypes;

After append new row in datagrid i call this

private void tbMachineTypes_ButtonClick(object sender,
System.Windows.Forms.ToolBarButtonClickEventArgs e)

{

this.grdMachineType[this.grdMachineType.CurrentRowIndex,1] = false;

this.dsMachineTypes.GetChanges();

this.grdMachineType.BindingContext[this.dsMachineTypes.MachineTypes].EndCurr
entEdit();

this.daMachineT.Update(this.dsMachineTypes.MachineTypes);

this.dsMachineTypes.AcceptChanges();

}

but databze haven't any changes .

If I after adding new row select another row and call save
tbMachineTypes_ButtonClick row is added.

thank's in advance for help

BFX

Reply to this Message

BFX - 05 May 2005 09:08 GMT

After tests i know that problem is when user dont press enter after insert
value to datagrid cell.
I try use
SendKeys.Send("{ENTER}");

but it's without any reason.

Could anyone help with this problem?

thanks

> Hi All,
>
[quoted text clipped - 13 lines]
>
> this.dsMachineTypes.GetChanges();

this.grdMachineType.BindingContext[this.dsMachineTypes.MachineTypes].EndCurr

> entEdit();
>
[quoted text clipped - 12 lines]
>
> BFX

Reply to this Message

Cor Ligthert - 05 May 2005 09:28 GMT

BFX.

> this.dsMachineTypes.GetChanges();
>
> this.grdMachineType.BindingContext[this.dsMachineTypes.MachineTypes].EndCurr
> entEdit();

When you do the EndCurrentEdit than the dataset can probably get changes.

Therefore I would change these two rows from position.

Don't nock to hard on your head when you read this, I don't see often
directly this kind of mistakes in my own programs.

I hope this helps,

Cor

Reply to this Message

BFX - 05 May 2005 11:06 GMT

Thaks for answer but I think problem is that dataset cannot get changes when
user dont't press enter after edit datagrid cell.
But I don't see why EndCurrentEdit and SendKeys.Send("{ENTER}"); don't cause
End Editing process on datagrid.

> BFX.
>
> > this.dsMachineTypes.GetChanges();

this.grdMachineType.BindingContext[this.dsMachineTypes.MachineTypes].EndCurr

> > entEdit();
>
[quoted text clipped - 8 lines]
>
> Cor

Reply to this Message

Cor Ligthert - 05 May 2005 11:49 GMT

BFX

I see some strange code in what you show, however see this sample.

See this sample
You have in your datagrid
1
3
5
When the users changes the 3 in a 4 and clicks the button, nothing happens
in the datagrid and in the dataset until that he changes the row or there is
done an endcurrentedit on the right datasource, what forces to push the
changes down in the datasource accoording to the bindingcontext.

There is in my opinion some strange code in what you show. I did not see it
the first time.

this.dsMachineTypes.GetChanges();
This is a result and would normally be after the endcurrentedit

If (this.dsMachineTypes.HasChanges())
DataSet dsChanges = this.dsMachineTypes.GetChanges();

(And than do the update with that dsChanges. Than the acceptchanges on the
original dataset is needed because the dataset with changes is a copy. In
the way you show it now with the original dataset is the acceptchanges
already done by the dataadapter)

I hope this helps,

Cor

> Thaks for answer but I think problem is that dataset cannot get changes
> when
[quoted text clipped - 20 lines]
>>
>> Cor

Reply to this Message

BFX - 06 May 2005 10:04 GMT

Thank's Cor,

but solving of my problem was easy, see folow

this.dsMachineTypes.AcceptChanges();

grdMachineType.CurrentRowIndex = -1; // it's :)

this.grdMachineType.BindingContext[this.dsMachineTypes.MachineTypes].EndCurr
entEdit();

this.daMachineT.Update(this.dsMachineTypes.MachineTypes);

> BFX
>
[quoted text clipped - 38 lines]
> >>
> >> > this.dsMachineTypes.GetChanges();

this.grdMachineType.BindingContext[this.dsMachineTypes.MachineTypes].EndCurr

> >> > entEdit();
> >>
[quoted text clipped - 8 lines]
> >>
> >> Cor

Reply to this Message

Cor Ligthert - 06 May 2005 10:17 GMT

> Thank's Cor,
>
[quoted text clipped - 4 lines]
> entEdit();
> this.daMachineT.Update(this.dsMachineTypes.MachineTypes);

And you are sure that with this code, when somebody changing first the rows
in the grid before clicking on the button, update the changes.

It will in my opinion be a miracle however when you say so. For the rest it
is accoording what I tried to tell you all the time, where I was thinking
that you were updating using the getchanges method.

In this way will withouth that acceptchanges probably this enough.
\\\
BindingContext[dsMachineTypes.MachineTypes].EndCurrentEdit();
////

Cor

Reply to this Message

Datagrid new row update problem.

Free Magazines