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HOWTO Nested Grid in ASP.Net 2.0

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zia

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Apr 13, 2006, 6:07:01 AM4/13/06
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Problem 1:

i want nesting of grids like in hierarchical format (Expand-collapse) in
ASP.Net 2.0, is there any trick to do that without heavy javascript or HTML?
is there any way to do that using new GridView control?

i have done something like this
(http://www.samspublishing.com/content/images/chap4_0672326744/elementLinks/fig04.jpg)

but i want the child grid only show when i click the select button(
itemcommand event) of the parent grid and only current row display the child
grid not others...

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Problem 2:

another example i tried is
http://msdn.microsoft.com/msdnmag/issues/03/10/CuttingEdge/

it has the proper format what i want but when i connect it with my sql
server data it is showing me error: "The relation is not parented to the
table to which this DataView points"

my tables are:

tbl1:

RegionCode -RegionName
R1 -North Region
R2 -Mumbai Region
R3 -East Region
R4 -South Region
R5 -Gujarat Region
R6 -Maharashtra Region

tbl2:

RegionCode -ZoneCode -ZoneName
R1 -R1Z1 -Delhi NCR
R1 -R1Z2 -U.P, Bihar & Uttaranchal
R1 -R1Z3 -Haryana
R1 -R1Z4 -Punjab
R1 -R1Z5 -Chandigarh
R1 -R1Z6 -M.P.
R1 -R1Z7 -Jaipur
R2 -R2Z1 -Mumbai
R3 -R3Z1 -Kolkatta
R3 -R3Z2 -Rest of East


code is:

protected void Page_Load(object sender, System.EventArgs e)
{
// Put user code to initialize the page here
if (!IsPostBack)
{
SqlDataAdapter adapter = new SqlDataAdapter(
"SELECT * from tbl1", "SERVER=local;DATABASE=mydata0607;UID=sa;pwd=sa");

SqlDataAdapter adapter1 = new SqlDataAdapter("select * from tbl2",
"SERVER=local;DATABASE=mydata0607;UID=sa;pwd=sa");

DataSet data = new DataSet();
adapter.Fill(data, "tbl1");
adapter1.Fill(data, "tbl2");

data.Tables[0].TableName = "tbl1";
data.Tables[1].TableName = "tbl2";


string relName = "tbl12tbl2";
DataRelation rel = new DataRelation(relName,
data.Tables["tbl1"].Columns["RegionCode"],
data.Tables["tbl2"].Columns["RegionCode"]);
data.Relations.Add(rel);

Cache["MyData"] = data;
}

BindData();
}


protected void UpdateView(object sender, System.EventArgs e)
{
BindData();
}


private void BindData()
{
// Bind the data source
dataGrid.DataSource = (DataSet) Cache["MyData"];
dataGrid.DataMember = "tbl1";

// Bind the data
dataGrid.DataBind();
}

//'please help me...

--
zia

bjpi...@gmail.com

unread,
Apr 26, 2006, 7:54:05 AM4/26/06
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