Move to next DataSet row

[Looch]

Hi All,

I'm using the following to fill a DataSet:

public void itemSearch(string column, string item)
{
...fill DataSet
}

I want to be able to move to the next and previous rows with:

private void cmdNext_Click(object sender, EventArgs e)
{
BindingContext[ds.Tables[0]].Position += 1;
}

The problem is the DataSet (ds) isn't accessible. I'm a novice here
but thought that since the Dataset method was public I'd be able to
access it.

How can I do that?

Thanks for any insight.

[Nicholas Paldino [.NET/C# MVP]]

Looch,

You should have a field somewhere that the cmdNext_Click method can
access which holds the data source that you are getting the binding context
for. In other words, you should change your design to return an object and
a string (optionally, for the DataMember) which you can use to get the
binding context.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Looch" <lu**********@yahoo.comwrote in message
news:11**********************@q69g2000hsb.googlegr oups.com...

Hi All,

I'm using the following to fill a DataSet:

public void itemSearch(string column, string item)
{
...fill DataSet
}

I want to be able to move to the next and previous rows with:

private void cmdNext_Click(object sender, EventArgs e)
{
BindingContext[ds.Tables[0]].Position += 1;
}

The problem is the DataSet (ds) isn't accessible. I'm a novice here
but thought that since the Dataset method was public I'd be able to
access it.

How can I do that?

Thanks for any insight.

[=?Utf-8?B?UGV0ZXIgQnJvbWJlcmcgW0MjIE1WUF0=?=]

I'm guessing, but I believe this is because your dataset is not visible from
the scope you show. Define a protected DataSet ds field at class level (not
inside any method), and when you get back your DataSet, assign it to this
field. It should now be "visible" from within any method of your class.

-- Peter
Site: http://www.eggheadcafe.com
UnBlog: http://petesbloggerama.blogspot.com
BlogMetaFinder(BETA): http://www.blogmetafinder.com

"Looch" wrote:

Hi All,

I'm using the following to fill a DataSet:

public void itemSearch(string column, string item)
{
...fill DataSet
}

I want to be able to move to the next and previous rows with:

private void cmdNext_Click(object sender, EventArgs e)
{
BindingContext[ds.Tables[0]].Position += 1;
}

The problem is the DataSet (ds) isn't accessible. I'm a novice here
but thought that since the Dataset method was public I'd be able to
access it.

How can I do that?

Thanks for any insight.

[Looch]

Define a protected DataSet ds field at class level (not
inside any method), and when you get back your DataSet, assign it to
this
field.

Peter, could you provide a quick example? I'm not sure what you mean
by field.

[=?Utf-8?B?UGV0ZXIgQnJvbWJlcmcgW0MjIE1WUF0=?=]

public class MyClass
{
protected DataSet myDs;

public void GetDataSet ()
{
// your database call to get back DataSet here
myDs=SqlHelper.ExecuteDataSet (myconn, mysproc, myparams);
}

// now "myDs" is visible from any method in your class, once its been
populated and assigned to the "myDs" variable.
}

Peter
--
Site: http://www.eggheadcafe.com
UnBlog: http://petesbloggerama.blogspot.com
BlogMetaFinder(BETA): http://www.blogmetafinder.com

"Looch" wrote:

Hi All,

I'm using the following to fill a DataSet:

public void itemSearch(string column, string item)
{
...fill DataSet
}

I want to be able to move to the next and previous rows with:

private void cmdNext_Click(object sender, EventArgs e)
{
BindingContext[ds.Tables[0]].Position += 1;
}

The problem is the DataSet (ds) isn't accessible. I'm a novice here
but thought that since the Dataset method was public I'd be able to
access it.

How can I do that?

Thanks for any insight.