Foreach with controls

[Ant]

Hi,
I'd like to do this basically:

foreach (Textbox txt in Controls)
{
txt.text = ""
}
How fo I do it?

Thanks very much for any answers.

Ant

[Nick Hounsome]

"Ant" <An*@discussions.microsoft.com> wrote in message
news:F8**********************************@microsof t.com...

Hi,
I'd like to do this basically:

foreach (Textbox txt in Controls)
{
txt.text = ""
}
How fo I do it?

void ClearText(Control c)
{
foreach(Control cc in Controls)
{
Textbox tb = cc as Textbox;
if( tb != null )
tb.Text = string.Empty;
else
ClearText(cc); // recursion required for panels/groups etc
}
}

[Chris S.]

foreach (Control control in this.Controls)
{
if ( control is Textbox )
control.text = "";
}

[kangkai1980]

Chris S. wrote:

foreach (Control control in this.Controls)
{
if ( control is Textbox )
control.text = "";
}

Isn't this control read only?

[kangkai1980]

Chris S. wrote:

foreach (Control control in this.Controls)
{
if ( control is Textbox )
control.text = "";
}

Isn't this "control" read only?

[Jon Skeet [C# MVP]]

kangkai1980 wrote:

Chris S. wrote:

foreach (Control control in this.Controls)
{
if ( control is Textbox )
control.text = "";
}

Isn't this control read only?

The variable is - so you can't say "control = new Control()". However,
that doesn't stop you from setting properties, calling methods etc.

Jon

[Ignacio Machin \( .NET/ C# MVP \)]

Hi,

void ClearText(Control c)
{
foreach(Control cc in Controls)
{
Textbox tb = cc as Textbox;
if( tb != null )
tb.Text = string.Empty;
else
ClearText(cc); // recursion required for panels/groups etc
}
}

I would change it by
void ClearText(Control c)
{
foreach(Control cc in Controls)
{
Textbox tb = cc as Textbox;
if( tb != null )
tb.Text = string.Empty;

if ( cc.Controls.Count >0 )
ClearText(cc); // recursion required for panels/groups etc
}
}

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

[kangkai1980]

Jon Skeet [C# MVP] wrote:

kangkai1980 wrote:

Chris S. wrote:

foreach (Control control in this.Controls)
{
if ( control is Textbox )
control.text = "";
}

Isn't this control read only?

The variable is - so you can't say "control = new Control()". However,
that doesn't stop you from setting properties, calling methods etc.

Jon

It seems I had misunderstood the foreach thingy, Thanks!