EditItemTemplate question

[Guest]

How can I only display the textbox I have in an EditItemTemplate based on the
value in another cell in the row?

i.e I only want users to edit one of the cells based on the value in another
cell....

Should I do this in the ItemDataBound event of the datagrid...something
like...
If e.Item.Cells(8).Text = "2" Then
dont allow the textbox defined in the EditItemTemplate to be visible
what is the code for this?
End If

Thanks for your help

 

[Grant Merwitz]

e.Item.Controls.FindControl("TextBox's Id").Visible = false;

 

[Guest]

thanks for the reply.

I get a "Object reference not set to an instance of an object" error with
the line
CType(e.Item.FindControl("txtDaysWriteOffed"), TextBox).Visible = False

Should the EditItemTemplate control be referenceable in the ItemDataBound
datagrid event? Its as if it doesnt know about the control?

 

[Guest]

the line its failing on is
CType(e.Item.Controls("txtDaysWriteOffed"), TextBox).Enabled = False

Its says "Input string was not in a correct format. "

 

[Grant Merwitz]

i think it should be

CType(e.Item.Controls.FindControl("txtDaysWriteOffed"), TextBox).Enabled =
False

Adding the 'FindControl' in there

 

[Guest]

Yes I tried that but it says "FindControl" is not a member of
System.Web.UI.ControlCollection"

thanks

 

[Grant Merwitz]

sorry, drop out the control bit

e.Item.FindControl("MyControl")

 

[Guest]

Yeah this is something I tried also, get an ""Object reference not set to an
instance of an object" error.

It looks like the EditItemTemplate control is not referenceabnle in the
ItemDataBound event?

 

[Grant Merwitz]

How about if you try that code in the EditCommand

private void DataGrid1_EditCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{

e.Item.FindControl("");

}



not sure the VB code for that, but accessed through the DataGrid property
'EditCommand'

 

[Guest]

No, tired that too, but got the same Object reference not set to an instance
of an object" error.

Is there a way of doing this? It should be simply!!

 

[Guest]

tried that too, go the same object not set...error

This should be a simple thing to do, any other ideas? I am tried everything
I know...

 

[Grant Merwitz]

GOT IT

After much fighting with Visual Studio - which kept removing my DataGrid
events, i found a way
In your EditCommand method, hide the Column you don't want to show,

So, if the TextBox will appear in Column 4, in you EditCommand Method do as
follows:

private void DataGrid1_EditCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{

DatGrid1.EditItemIndex = e.Item.ItemIndex;

BindTopicGrid(this.m_user);

if(e.Item.Cells(8).Text = "2" then

DataGrid1.Columns[4].Visible = false;

End If

}

Again, HTH

 

[Guest]

Hi Grant,
I really appreciate all your effort on this. I really need to keep the
column visible, its just the txtbox in the EditItemTemplate. Anyway of doin
it?

GOT IT

After much fighting with Visual Studio - which kept removing my DataGrid
events, i found a way
In your EditCommand method, hide the Column you don't want to show,

So, if the TextBox will appear in Column 4, in you EditCommand Method do as
follows:

private void DataGrid1_EditCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{

DatGrid1.EditItemIndex = e.Item.ItemIndex;

BindTopicGrid(this.m_user);

if(e.Item.Cells(8).Text = "2" then

DataGrid1.Columns[4].Visible = false;

End If

}

Again, HTH

tried that too, go the same object not set...error

This should be a simple thing to do, any other ideas? I am tried
everything
I know...

 

[Grant Merwitz]

Sorry man, all out of ideas and time .. home time

Try start a new post, as not many people will look at this one again - its
massive

Good luck

Hi Grant,
I really appreciate all your effort on this. I really need to keep the
column visible, its just the txtbox in the EditItemTemplate. Anyway of
doin
it?

GOT IT

After much fighting with Visual Studio - which kept removing my DataGrid
events, i found a way
In your EditCommand method, hide the Column you don't want to show,

So, if the TextBox will appear in Column 4, in you EditCommand Method do
as
follows:

private void DataGrid1_EditCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{

DatGrid1.EditItemIndex = e.Item.ItemIndex;

BindTopicGrid(this.m_user);

if(e.Item.Cells(8).Text = "2" then

DataGrid1.Columns[4].Visible = false;

End If

}

Again, HTH

tried that too, go the same object not set...error

This should be a simple thing to do, any other ideas? I am tried
everything
I know...

:

How about if you try that code in the EditCommand

private void DataGrid1_EditCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{

e.Item.FindControl("");

}



not sure the VB code for that, but accessed through the DataGrid
property
'EditCommand'


Yeah this is something I tried also, get an ""Object reference not
set
to
an
instance of an object" error.

It looks like the EditItemTemplate control is not referenceabnle in
the
ItemDataBound event?

:

sorry, drop out the control bit

e.Item.FindControl("MyControl")


Yes I tried that but it says "FindControl" is not a member of
System.Web.UI.ControlCollection"

thanks

:

i think it should be

CType(e.Item.Controls.FindControl("txtDaysWriteOffed"),
TextBox).Enabled
=
False

Adding the 'FindControl' in there

the line its failing on is
CType(e.Item.Controls("txtDaysWriteOffed"), TextBox).Enabled =
False

Its says "Input string was not in a correct format. "

:

thanks for the reply.

I get a "Object reference not set to an instance of an
object"
error
with
the line
CType(e.Item.FindControl("txtDaysWriteOffed"),
TextBox).Visible
=
False

Should the EditItemTemplate control be referenceable in the
ItemDataBound
datagrid event? Its as if it doesnt know about the control?

:

e.Item.Controls.FindControl("TextBox's Id").Visible =
false;



How can I only display the textbox I have in an
EditItemTemplate
based on
the
value in another cell in the row?

i.e I only want users to edit one of the cells based on
the
value
in
another
cell....

Should I do this in the ItemDataBound event of the
datagrid...something
like...
If e.Item.Cells(8).Text = "2" Then
dont allow the textbox defined in the
EditItemTemplate
to
be
visible
what is the code for this?
End If

Thanks for your help

 

[Guest]

thanks for the reply.

I get a "Object reference not set to an instance of an object" error with
the line
CType(e.Item.FindControl("txtDaysWriteOffed"), TextBox).Visible = False

Should the EditItemTemplate control be referenceable in the ItemDataBound
datagrid event? Its as if it doesnt know about the control?

The control only exists when e.Item.ItemType = ListItemType.EditItem. The
ItemDataBound event is triggered for all ListItemTypes but your textbox only
exists for the EditItem.

All you need to do is just add an if statement like this:
If e.Item.ItemType = ListItemType.EditItem Then
If Not e.Item.FindControl("txtDaysWriteOffed") is Nothing then
CType(e.Item.FindControl("txtDaysWriteOffed"), TextBox).Visible =
False
End If
End If

 

[Grant Merwitz]

Just posting here to keep your other post clean

Can you post me some of your code?
This really shouldn't be so difficult - certainly not a 48 hour problem

Sorry man, all out of ideas and time .. home time

Try start a new post, as not many people will look at this one again - its
massive

Good luck

Hi Grant,
I really appreciate all your effort on this. I really need to keep the
column visible, its just the txtbox in the EditItemTemplate. Anyway of
doin
it?

GOT IT

After much fighting with Visual Studio - which kept removing my DataGrid
events, i found a way
In your EditCommand method, hide the Column you don't want to show,

So, if the TextBox will appear in Column 4, in you EditCommand Method do
as
follows:

private void DataGrid1_EditCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{

DatGrid1.EditItemIndex = e.Item.ItemIndex;

BindTopicGrid(this.m_user);

if(e.Item.Cells(8).Text = "2" then

DataGrid1.Columns[4].Visible = false;

End If

}

Again, HTH

tried that too, go the same object not set...error

This should be a simple thing to do, any other ideas? I am tried
everything
I know...

:

How about if you try that code in the EditCommand

private void DataGrid1_EditCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{

e.Item.FindControl("");

}



not sure the VB code for that, but accessed through the DataGrid
property
'EditCommand'


Yeah this is something I tried also, get an ""Object reference not
set
to
an
instance of an object" error.

It looks like the EditItemTemplate control is not referenceabnle in
the
ItemDataBound event?

:

sorry, drop out the control bit

e.Item.FindControl("MyControl")


Yes I tried that but it says "FindControl" is not a member of
System.Web.UI.ControlCollection"

thanks

:

i think it should be

CType(e.Item.Controls.FindControl("txtDaysWriteOffed"),
TextBox).Enabled
=
False

Adding the 'FindControl' in there

the line its failing on is
CType(e.Item.Controls("txtDaysWriteOffed"), TextBox).Enabled
=
False

Its says "Input string was not in a correct format. "

:

thanks for the reply.

I get a "Object reference not set to an instance of an
object"
error
with
the line
CType(e.Item.FindControl("txtDaysWriteOffed"),
TextBox).Visible
=
False

Should the EditItemTemplate control be referenceable in the
ItemDataBound
datagrid event? Its as if it doesnt know about the control?

:

e.Item.Controls.FindControl("TextBox's Id").Visible =
false;



How can I only display the textbox I have in an
EditItemTemplate
based on
the
value in another cell in the row?

i.e I only want users to edit one of the cells based on
the
value
in
another
cell....

Should I do this in the ItemDataBound event of the
datagrid...something
like...
If e.Item.Cells(8).Text = "2" Then
dont allow the textbox defined in the
EditItemTemplate
to
be
visible
what is the code for this?
End If

Thanks for your help