The document is a forum discussion regarding issues faced while dynamically building a RadGrid in ASP.NET with a hierarchy and declarative relations. A user describes their attempts to create a bound sub-column that fails to display child records despite being bound to a list. Various coding strategies and suggestions from the community are shared to resolve the problem.

1. 9/1/2015 RadGrid: dynamically building a grid and adding a hierarchy with declarative relations row? | The ASP.NET Forums
http://forums.asp.net/t/1551140.aspx?RadGrid+dynamically+building+a+grid+and+adding+a+hierarchy+with+declarative+relations+row+ 1/7
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Last post May 12, 2010 08:01 AM by bloggernext
RadGrid: dynamically building a grid and adding
a hierarchy with declarative relations row?
[Answered]
RadGrid: dynamically building a grid and adding a hierarchy with declarative relations row?
Apr 26, 2010 12:04 AM | sholdorf
I have searched the internet and can't find out what my final problem is. What I have is RadGrid and I am creating
a sub‐column that is a bound column. Now, when I select the icon to open the sub‐column the relation field's
bound column appearing but even though I am binding a List<> to it I get the message: No child records to
display. Below is the code so if anyone can help with my final problem that would be great!
public partial class _Default : System.Web.UI.Page
{
protected RadGrid grid;
protected static List<TestListItem> list = new List<TestListItem>﴾﴿;
protected static List<TestListItem2> list2 = new List<TestListItem2>﴾﴿;
override protected void OnInit﴾EventArgs e﴿
{
DefineGridStructure﴾﴿;
base.OnInit﴾e﴿;
}
private void DefineGridStructure﴾﴿
{
this.grid = new RadGrid﴾﴿;
this.grid.AutoGenerateColumns = false;
this.grid.NeedDataSource += new GridNeedDataSourceEventHandler﴾OnNeedDataSource﴿;
this.grid.ItemDataBound += new GridItemEventHandler﴾grid_ItemDataBound﴿;
this.grid.DetailTableDataBind += new GridDetailTableDataBindEventHandler﴾grid_DetailTableDataBind﴿;
this.grid.AllowMultiRowEdit = true;
this.grid.AllowPaging = true;
this.grid.AllowSorting = true;
this.grid.Width = 700;
//other columns definitions ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
string gridEditColumnLinkName = "Action Column";

2. 9/1/2015 RadGrid: dynamically building a grid and adding a hierarchy with declarative relations row? | The ASP.NET Forums
http://forums.asp.net/t/1551140.aspx?RadGrid+dynamically+building+a+grid+and+adding+a+hierarchy+with+declarative+relations+row+ 2/7
GridEditCommandColumn gridEditColumn = new GridEditCommandColumn﴾﴿;
gridEditColumn.ButtonType = GridButtonColumnType.LinkButton;
gridEditColumn.EditText = "Edit";
gridEditColumn.UpdateText = "Save";
gridEditColumn.CancelText = "Cancel";
gridEditColumn.UniqueName = "ActionButton";
gridEditColumn.HeaderText = gridEditColumnLinkName;
gridEditColumn.HeaderStyle.Width = 50;
string boundColumnName1 = "Column 1";
GridBoundColumn boundColumn1 = new GridBoundColumn﴾﴿;
boundColumn1.DataField = "A";
boundColumn1.UniqueName = "Column1";
boundColumn1.HeaderText = boundColumnName1;
boundColumn1.HeaderStyle.Width = 300;
string boundColumnName2 = "Column 2";
GridBoundColumn boundColumn2 = new GridBoundColumn﴾﴿;
boundColumn2.DataField = "B";
boundColumn2.UniqueName = "Column2";
boundColumn2.HeaderText = boundColumnName2;
boundColumn2.HeaderStyle.Width = 300;
string boundColumnName3 = "Column 3";
GridBoundColumn boundColumn3 = new GridBoundColumn﴾﴿;
boundColumn3.DataField = "C";
boundColumn3.UniqueName = "Column3";
boundColumn3.HeaderText = boundColumnName3;
boundColumn3.HeaderStyle.Width = 300;
string dropdownColumnName = "Dropdown Column2";
GridBoundColumn dropdownColumn = new GridBoundColumn﴾﴿;
dropdownColumn.UniqueName = "Column4";
dropdownColumn.DataField = "D";
dropdownColumn.HeaderText = dropdownColumnName;
dropdownColumn.HeaderStyle.Width = 300;
//Detail table ‐ ﴾II in hierarchy level﴿
GridTableView tableView = new GridTableView﴾this.grid﴿;
tableView.Width = Unit.Percentage﴾100﴿;
tableView.DataKeyNames = new string[1] { "A1" };
GridRelationFields relationFields = new GridRelationFields﴾﴿;
relationFields.MasterKeyField = "A";
relationFields.DetailKeyField = "A1";
tableView.ParentTableRelation.Add﴾relationFields﴿;
grid.MasterTableView.DetailTables.Add﴾tableView﴿;

3. 9/1/2015 RadGrid: dynamically building a grid and adding a hierarchy with declarative relations row? | The ASP.NET Forums
http://forums.asp.net/t/1551140.aspx?RadGrid+dynamically+building+a+grid+and+adding+a+hierarchy+with+declarative+relations+row+ 3/7
//Add columns
GridBoundColumn boundColumnr = new GridBoundColumn﴾﴿;
boundColumnr.DataField = "A1";
boundColumnr.HeaderText = "A1";
tableView.Columns.Add﴾boundColumnr﴿;
this.grid.MasterTableView.DataKeyNames = new string[] { "A" };
this.grid.MasterTableView.Columns.Add﴾gridEditColumn﴿;
this.grid.MasterTableView.Columns.Add﴾boundColumn1﴿;
this.grid.MasterTableView.Columns.Add﴾boundColumn2﴿;
this.grid.MasterTableView.Columns.Add﴾boundColumn3﴿;
this.grid.MasterTableView.Columns.Add﴾dropdownColumn﴿;
this.grid.MasterTableView.EditMode = GridEditMode.InPlace;
grid.PageSize = 5;
grid.ClientSettings.Scrolling.ScrollHeight = 230;
grid.ClientSettings.Scrolling.ScrollWidth = 750;
grid.ClientSettings.EnableClientKeyValues = true;
this.PlaceHolder1.Controls.Add﴾grid﴿;
}
void grid_DetailTableDataBind﴾object source, GridDetailTableDataBindEventArgs e﴿
{
e.DetailTableView.DataSource = list2;
}
void grid_ItemDataBound﴾object sender, GridItemEventArgs e﴿
{
if ﴾e.Item is GridDataItem﴿
{
GridDataItem item = e.Item as GridDataItem;
if ﴾e.Item.IsInEditMode﴿
{
}
}
}
protected void Page_Load﴾object sender, EventArgs e﴿
{
List<string> alist = new List<string>﴾﴿;
list = new List<TestListItem>﴾﴿;
list2 = new List<TestListItem2>﴾﴿;

4. 9/1/2015 RadGrid: dynamically building a grid and adding a hierarchy with declarative relations row? | The ASP.NET Forums
http://forums.asp.net/t/1551140.aspx?RadGrid+dynamically+building+a+grid+and+adding+a+hierarchy+with+declarative+relations+row+ 4/7
alist.Add﴾"1"﴿;
alist.Add﴾"2"﴿;
alist.Add﴾"3"﴿;
alist.Add﴾"4"﴿;
alist.Add﴾"5"﴿;
alist.Add﴾"5"﴿;
list.Add﴾ new TestListItem﴾ "ItemA 0", "ItemB a", "ItemC a", "ItemD a", alist ﴿﴿;
list.Add﴾ new TestListItem﴾ "ItemA 1", "ItemB b", "ItemC b", "ItemD b", alist ﴿﴿;
list.Add﴾ new TestListItem﴾ "ItemA 2", "ItemB c", "ItemC c", "ItemD c", alist ﴿﴿;
list.Add﴾ new TestListItem﴾ "ItemA 3", "ItemB d", "ItemC d", "ItemD d", alist ﴿﴿;
list.Add﴾ new TestListItem﴾ "ItemA 4", "ItemB e", "ItemC e", "ItemD e", alist ﴿﴿;
list.Add﴾ new TestListItem﴾ "ItemA 5", "ItemB f", "ItemC f", "ItemD f", alist ﴿﴿;
list2.Add ﴾new TestListItem2﴾"SubItem A"﴿﴿;
list2.Add﴾new TestListItem2﴾"SubItem B"﴿﴿;
list2.Add﴾new TestListItem2﴾"SubItem C"﴿﴿;
list2.Add﴾new TestListItem2﴾"SubItem D"﴿﴿;
list2.Add﴾new TestListItem2﴾"SubItem E"﴿﴿;
list2.Add﴾new TestListItem2﴾"SubItem F"﴿﴿;
}
void OnNeedDataSource﴾object source, GridNeedDataSourceEventArgs e﴿
{
if ﴾!e.IsFromDetailTable﴿
{
grid.DataSource = list;
}
else
{
//grid.MasterTableView.DataSource = list2;
}
}
public class TestListItem
{
private string _a;
private string _b;
private string _c;
private string _d;
List<string> _aList;
public TestListItem﴾ string a, string b, string c, string d,List<string> aList ﴿
{
this._a = a;
this._b = b;
this._c = c;
this._d = d;

5. 9/1/2015 RadGrid: dynamically building a grid and adding a hierarchy with declarative relations row? | The ASP.NET Forums
http://forums.asp.net/t/1551140.aspx?RadGrid+dynamically+building+a+grid+and+adding+a+hierarchy+with+declarative+relations+row+ 5/7
this._aList = aList;
}
public string A
{
get
{
return this._a;
}
set
{
this._a = value;
}
}
public string B
{
get
{
return this._b;
}
set
{
this._b = value;
}
}
public string C
{
get
{
return this._c;
}
set
{
this._c = value;
}
}
public string D
{
get
{
return this._d;

6. 9/1/2015 RadGrid: dynamically building a grid and adding a hierarchy with declarative relations row? | The ASP.NET Forums
http://forums.asp.net/t/1551140.aspx?RadGrid+dynamically+building+a+grid+and+adding+a+hierarchy+with+declarative+relations+row+ 6/7
}
set
{
this._d = value;
}
}
public List<string> AList
{
get
{
return this._aList;
}
set
{
this._aList = value;
}
}
}
public class TestListItem2
{
private string _a1;
public TestListItem2﴾string a1﴿
{
this._a1 = a1;
}
public string A1
{
get
{
return this._a1;
}
set
{
this._a1 = value;
}
}
}
}

7. 9/1/2015 RadGrid: dynamically building a grid and adding a hierarchy with declarative relations row? | The ASP.NET Forums
http://forums.asp.net/t/1551140.aspx?RadGrid+dynamically+building+a+grid+and+adding+a+hierarchy+with+declarative+relations+row+ 7/7
Re: RadGrid: dynamically building a grid and adding a hierarchy with declarative relations row?
May 12, 2010 08:01 AM | bloggernext
dude post it in their forum http://www.telerik.com/community/forums/aspnet‐ajax/grid.aspx
﴾http://www.telerik.com/community/forums/aspnet‐ajax/grid.aspx﴿
the response is always quick.
Re: RadGrid: dynamically building a grid and adding a hierarchy with declarative relations row?
May 12, 2010 08:01 AM | bloggernext
dude post it in their forum http://www.telerik.com/community/forums/aspnet‐ajax/grid.aspx
﴾http://www.telerik.com/community/forums/aspnet‐ajax/grid.aspx﴿
their response is always quick.
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