Hi All:
I have a dataset contains two tables, one parent child relation between two
tables. I have no trouble to bind parent table to a combobox, relation to a
win grid control. But I am having trouble to bind relation into another combo
box. DotNet does not give me a run time error. But it did not perform the way
I am expecting.
Thanks in advance
DK 5 4350
DK,
Are you binding to the relation for the combobox as well? Can you show
some code, as well as what your expectations are?
"da*******@opco .com" <da************ *@discussions.m icrosoft.com> wrote in
message news:A8******** *************** ***********@mic rosoft.com... Hi All: I have a dataset contains two tables, one parent child relation between two tables. I have no trouble to bind parent table to a combobox, relation to a win grid control. But I am having trouble to bind relation into another combo box. DotNet does not give me a run time error. But it did not perform the way I am expecting.
Thanks in advance
DK
combo1.DataSour ce = parent table;
combo1.DisplayM ember = col name from parent table;
combo1.ValueMem ber = col name from parent table;
combo2.DataSour ce = child table;
combo2.DisplayM ember = col name from child table;
combo2.ValueMem ber = col name from child table;
combo2.DataBind ings.Add("Selec tedValue", parent table, name of relation);
when the user changed value in combo1, the code should refresh data in combo2.
However, I can have other way around this issue. I just like to know I can
use relation to do this kind of binding, like I often do for Combox and
DataGrid (grid.SetDataBi nding(parent table, name of relation)).
Thanks
"Nicholas Paldino [.NET/C# MVP]" wrote: DK,
Are you binding to the relation for the combobox as well? Can you show some code, as well as what your expectations are? "da*******@opco .com" <da************ *@discussions.m icrosoft.com> wrote in message news:A8******** *************** ***********@mic rosoft.com... Hi All: I have a dataset contains two tables, one parent child relation between two tables. I have no trouble to bind parent table to a combobox, relation to a win grid control. But I am having trouble to bind relation into another combo box. DotNet does not give me a run time error. But it did not perform the way I am expecting.
Thanks in advance
DK
David,
Set the data source of combo2 to the relation itself, not to the child
table.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m
"da*******@opco .com" <da************ *@discussions.m icrosoft.com> wrote in
message news:AB******** *************** ***********@mic rosoft.com... combo1.DataSour ce = parent table; combo1.DisplayM ember = col name from parent table; combo1.ValueMem ber = col name from parent table;
combo2.DataSour ce = child table; combo2.DisplayM ember = col name from child table; combo2.ValueMem ber = col name from child table; combo2.DataBind ings.Add("Selec tedValue", parent table, name of relation);
when the user changed value in combo1, the code should refresh data in combo2. However, I can have other way around this issue. I just like to know I can use relation to do this kind of binding, like I often do for Combox and DataGrid (grid.SetDataBi nding(parent table, name of relation)).
Thanks
"Nicholas Paldino [.NET/C# MVP]" wrote:
DK,
Are you binding to the relation for the combobox as well? Can you show some code, as well as what your expectations are? "da*******@opco .com" <da************ *@discussions.m icrosoft.com> wrote in message news:A8******** *************** ***********@mic rosoft.com... > Hi All: > I have a dataset contains two tables, one parent child relation between > two > tables. I have no trouble to bind parent table to a combobox, relation > to > a > win grid control. But I am having trouble to bind relation into another > combo > box. DotNet does not give me a run time error. But it did not perform > the > way > I am expecting. > > Thanks in advance > > DK >
No this does not work.
Here is what I try:
combo2.DataSour ce = DataSet.Relatio ns[name of relation];
combo2.DisplayM ember = col name from child table;
combo2.ValueMem ber = col name from child table;
"Nicholas Paldino [.NET/C# MVP]" wrote: David,
Set the data source of combo2 to the relation itself, not to the child table.
-- - Nicholas Paldino [.NET/C# MVP] - mv*@spam.guard. caspershouse.co m
"da*******@opco .com" <da************ *@discussions.m icrosoft.com> wrote in message news:AB******** *************** ***********@mic rosoft.com... combo1.DataSour ce = parent table; combo1.DisplayM ember = col name from parent table; combo1.ValueMem ber = col name from parent table;
combo2.DataSour ce = child table; combo2.DisplayM ember = col name from child table; combo2.ValueMem ber = col name from child table; combo2.DataBind ings.Add("Selec tedValue", parent table, name of relation);
when the user changed value in combo1, the code should refresh data in combo2. However, I can have other way around this issue. I just like to know I can use relation to do this kind of binding, like I often do for Combox and DataGrid (grid.SetDataBi nding(parent table, name of relation)).
Thanks
"Nicholas Paldino [.NET/C# MVP]" wrote:
DK,
Are you binding to the relation for the combobox as well? Can you show some code, as well as what your expectations are? "da*******@opco .com" <da************ *@discussions.m icrosoft.com> wrote in message news:A8******** *************** ***********@mic rosoft.com... > Hi All: > I have a dataset contains two tables, one parent child relation between > two > tables. I have no trouble to bind parent table to a combobox, relation > to > a > win grid control. But I am having trouble to bind relation into another > combo > box. DotNet does not give me a run time error. But it did not perform > the > way > I am expecting. > > Thanks in advance > > DK >
David,
Does it throw an exception, or nothing happens?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m
"da*******@opco .com" <da************ *@discussions.m icrosoft.com> wrote in
message news:E0******** *************** ***********@mic rosoft.com... No this does not work.
Here is what I try: combo2.DataSour ce = DataSet.Relatio ns[name of relation]; combo2.DisplayM ember = col name from child table; combo2.ValueMem ber = col name from child table;
"Nicholas Paldino [.NET/C# MVP]" wrote:
David,
Set the data source of combo2 to the relation itself, not to the child table.
-- - Nicholas Paldino [.NET/C# MVP] - mv*@spam.guard. caspershouse.co m
"da*******@opco .com" <da************ *@discussions.m icrosoft.com> wrote in message news:AB******** *************** ***********@mic rosoft.com... > combo1.DataSour ce = parent table; > combo1.DisplayM ember = col name from parent table; > combo1.ValueMem ber = col name from parent table; > > combo2.DataSour ce = child table; > combo2.DisplayM ember = col name from child table; > combo2.ValueMem ber = col name from child table; > combo2.DataBind ings.Add("Selec tedValue", parent table, name of > relation); > > when the user changed value in combo1, the code should refresh data in > combo2. > However, I can have other way around this issue. I just like to know I > can > use relation to do this kind of binding, like I often do for Combox and > DataGrid (grid.SetDataBi nding(parent table, name of relation)). > > Thanks > > "Nicholas Paldino [.NET/C# MVP]" wrote: > >> DK, >> >> Are you binding to the relation for the combobox as well? Can you >> show >> some code, as well as what your expectations are? >> "da*******@opco .com" <da************ *@discussions.m icrosoft.com> wrote >> in >> message news:A8******** *************** ***********@mic rosoft.com... >> > Hi All: >> > I have a dataset contains two tables, one parent child relation >> > between >> > two >> > tables. I have no trouble to bind parent table to a combobox, >> > relation >> > to >> > a >> > win grid control. But I am having trouble to bind relation into >> > another >> > combo >> > box. DotNet does not give me a run time error. But it did not >> > perform >> > the >> > way >> > I am expecting. >> > >> > Thanks in advance >> > >> > DK >> > >> >> >> This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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