Dim sql As String = ("Delete from Categories WHERE CategoryID in (" & +test & ")")

Take a blank .rdlc (report1.rdlc). create .xsd file (say dsReport.xsd). Create datatable in dsReport (say dtReport).Include (or create manualy) fields required in the datatable,dtReport. Drag those fields in ur rdlc. in code behind

using Microsoft.Reporting.WebForms;

reportViewer1.Visible = true;
reportViewer1.ShowToolBar = true;
reportViewer1.SizeToReportContent = true;
reportViewer1.LocalReport.ReportPath = "report1.rdlc";
reportViewer1.ProcessingMode = Microsoft.Reporting.WebForms.ProcessingMode.Local;
//Note:DisplayReport will be your method to get data based on your parameters with return type as datatable.
DataTable dtReportSource = DisplayReport(fromDate,todate,process);

//Note schema for dtReport and dtReportSource should match.
//Note: name format of dataset and datatable in .xsd file

reportViewer1.LocalReport.DataSources.Add(new ReportDataSource("dsReport_dtReport", dtReportSource ));

Search for parent Child relation in gridview. also take a look at this Multilevel Nested Master/Detail Data Display Using GridView[^]

Assuming your first row of gridview is the last inserted record in design mode provide backcolor in SelectedRowStyle or in your CSS. then in ur insert function after Binding gridview write the below line

gridview1.SelectedIndex = 0;

WEBSITES are u sure or they are like page1.aspx,page2.aspx,page3.aspx.

try this

if (!IsPostBack)
{
TreeNode Parentnode = new TreeNode("Home");
TreeNode node = new TreeNode("Organization","","","'Organization.aspx","_blank");
//node.NavigateUrl = "javascript:window.open('Organization.aspx','mywindow','width=750,height=600');";
Parentnode.ChildNodes.Add(node);
TreeView1.Nodes.Add(Parentnode);
}