Variable scope problem?

[Tom]

Hi

I have the following code and why can't i change the value of myvar in the
DataGrid1_editcommand event so that the (changed) value of myvar is there in
the Update event?? (it fires i debugged it!):

namespace MYproject

{

using System;

using System.Data;

using System.Drawing;

using System.Web;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

public class MyUsercontrol: System.Web.UI.UserControl

{

public string myvar ="hello";

private void Page_Load(object sender, System.EventArgs e)

{
}
public void DataGrid1_EditCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{
myvar ="goodbye"; //enters this code first
}

private void DataGrid1_UpdateCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{

string temp; // enters this code next!!!

temp = myvar; // myvar = "hello" ???? instead of the wanted "goodbye"
}

}

}

ch Tom

[Ciaran]

The variable value will be lost between postbacks. If it need to be
persisted it should be saved to teh view state by the control and got back
when a postback occurs.

Ciaran
"Tom" <to**********@hotmail.com> wrote in message
news:eK**************@TK2MSFTNGP10.phx.gbl...

Hi

I have the following code and why can't i change the value of myvar in the
DataGrid1_editcommand event so that the (changed) value of myvar is there
in
the Update event?? (it fires i debugged it!):

namespace MYproject

{

using System;

using System.Data;

using System.Drawing;

using System.Web;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

public class MyUsercontrol: System.Web.UI.UserControl

{

public string myvar ="hello";

private void Page_Load(object sender, System.EventArgs e)

{
}
public void DataGrid1_EditCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{
myvar ="goodbye"; //enters this code first
}

private void DataGrid1_UpdateCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{

string temp; // enters this code next!!!

temp = myvar; // myvar = "hello" ???? instead of the wanted "goodbye"
}

}

}

ch Tom

[Tom]

so how do you code all this? do you have a sample for this?
"Ciaran" <ci****@theodonnells.plus.com> wrote in message
news:41***********************@ptn-nntp-reader04.plus.net...

The variable value will be lost between postbacks. If it need to be
persisted it should be saved to teh view state by the control and got back
when a postback occurs.

Ciaran
"Tom" <to**********@hotmail.com> wrote in message
news:eK**************@TK2MSFTNGP10.phx.gbl...

Hi

I have the following code and why can't i change the value of myvar in the DataGrid1_editcommand event so that the (changed) value of myvar is there in
the Update event?? (it fires i debugged it!):

namespace MYproject

{

using System;

using System.Data;

using System.Drawing;

using System.Web;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

public class MyUsercontrol: System.Web.UI.UserControl

{

public string myvar ="hello";

private void Page_Load(object sender, System.EventArgs e)

{
}
public void DataGrid1_EditCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{
myvar ="goodbye"; //enters this code first
}

private void DataGrid1_UpdateCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)

{

string temp; // enters this code next!!!

temp = myvar; // myvar = "hello" ???? instead of the wanted "goodbye"
}

}

}

ch Tom

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

Hi,

You could simply save it in a session as
Session("myvar") = myvar;

later you retrieve it using

myvar = Session("myvar").ToString();

Please note that you should make sure that you saved the variable before
retrieve , usually you do so in the onload event checking for the IsPostBack
property.

cheers,

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


"Tom" <to**********@hotmail.com> wrote in message
news:Og**************@TK2MSFTNGP12.phx.gbl...

so how do you code all this? do you have a sample for this?
"Ciaran" <ci****@theodonnells.plus.com> wrote in message
news:41***********************@ptn-nntp-reader04.plus.net...

The variable value will be lost between postbacks. If it need to be
persisted it should be saved to teh view state by the control and got
back
when a postback occurs.

Ciaran
"Tom" <to**********@hotmail.com> wrote in message
news:eK**************@TK2MSFTNGP10.phx.gbl...

> Hi
>
> I have the following code and why can't i change the value of myvar in the > DataGrid1_editcommand event so that the (changed) value of myvar is there > in
> the Update event?? (it fires i debugged it!):
>
> namespace MYproject
>
> {
>
> using System;
>
> using System.Data;
>
> using System.Drawing;
>
> using System.Web;
>
> using System.Web.UI.WebControls;
>
> using System.Web.UI.HtmlControls;
>
>
>
> public class MyUsercontrol: System.Web.UI.UserControl
>
> {
>
> public string myvar ="hello";
>
>
>
> private void Page_Load(object sender, System.EventArgs e)
>
> {
>
>
> }
>
>
> public void DataGrid1_EditCommand(object source,
> System.Web.UI.WebControls.DataGridCommandEventArgs e)
>
> {
>
>
> myvar ="goodbye"; //enters this code first
>
>
> }
>
>
>
> private void DataGrid1_UpdateCommand(object source,
> System.Web.UI.WebControls.DataGridCommandEventArgs e)
>
> {
>
> string temp; // enters this code next!!!
>
> temp = myvar; // myvar = "hello" ???? instead of the wanted "goodbye"
>
>
> }
>
> }
>
> }
>
> ch Tom
>
>