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How to fetch child records from DataRelation class
Dec 23 2011 5:09 AM
Hi All,
i have established the connection between two tables using
DataRelation class as follows. & i have two gridviews
for parent table primary key column in Gridview i have link button.
now my requirement is
when i click the DNo in parent gridview by using DataRelation it have to fetch the child records & i have to display those records in another gridview
oCon=
new
SqlConnection
(
ConfigurationManager
.AppSettings[
"conStr"
]);
oDADept =
new
SqlDataAdapter
(
"select * from tbl_Department order by DNo"
,oCon);
oDAEmp =
new
SqlDataAdapter
(
"select * from tbl_EmpDept order by ENo"
, oCon);
oDS =
new
DataSet
();
oDADept.Fill(oDS,
"tbl_Department"
);
oDAEmp.Fill(oDS,
"tbl_EmpDept"
);
oDR =
new
DataRelation
(
"DeptEmp"
, oDS.Tables[
"tbl_Department"
].Columns[
"DNo"
], oDS.Tables[
"tbl_EmpDept"
].Columns[
"DNo"
]);
oDS.Relations.Add(oDR);
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