Mixing
MVC DropdownlistFor not reverting to default value on null
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I have a page which sets the controls on another page to required (-1), disabled (0) or optional (null) from a db table.
They all use the same Viewbag param as the source.
here is the dropdown code which is repeated x number of times.
@Html.DropDownListFor(x=>x.Control1, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control2, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control3, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control4, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control5, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
StateList Contains
List<SelectListItem> states = new List<SelectListItem>();
states.Add(new SelectListItem { Text = "Required", Value = "-1" });
states.Add(new SelectListItem { Text = "Disabled", Value = "0" });
ViewBag.StateList = states;
This loads up correctly if they are all null, they all display optional.
if i set each one to either required or disabled it works correctly as well.
if i leave the first couple to optional and set number 3 to required and leave the rest it saves correctly in the db as
null,null,-1,null,null,etc
but when it displays the first two are optional but all others are set to whatever i set in control 3 be it required or disabled.
So what should display as
Optional,Optional,Required,Optional,Optional etc
It displays as
Optional,Optional,Required,Required,Required.
Any ideas?
**** EDIT ***
Ok Definitly a binding issue to the Dropdownlistfor...
i replaced them with
<select id="Control1" name="Control1" class="form-control">
@foreach (SelectListItem option in ViewBag.StateList)
{
if (option.Value == Model.Control1.ToString())
{
<option value="@option.Value" selected='selected'>@option.Text</option>
}
else
{
<option value="@option.Value">@option.Text</option>
}
}
</select>
and it works as expected....
this unfortunately turns one line of code into 13.... which i'm not particularly happy about.... so hopefully this info will help in finding a solution using the intended use of dropdownlist for....
c# asp.net-mvc razor html.dropdownlistfor
asked Jan 3 at 10:59
L RileyL Riley
124113
|
show 1 more comment
I have a page which sets the controls on another page to required (-1), disabled (0) or optional (null) from a db table.
They all use the same Viewbag param as the source.
here is the dropdown code which is repeated x number of times.
@Html.DropDownListFor(x=>x.Control1, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control2, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control3, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control4, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control5, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
StateList Contains
List<SelectListItem> states = new List<SelectListItem>();
states.Add(new SelectListItem { Text = "Required", Value = "-1" });
states.Add(new SelectListItem { Text = "Disabled", Value = "0" });
ViewBag.StateList = states;
This loads up correctly if they are all null, they all display optional.
if i set each one to either required or disabled it works correctly as well.
if i leave the first couple to optional and set number 3 to required and leave the rest it saves correctly in the db as
null,null,-1,null,null,etc
but when it displays the first two are optional but all others are set to whatever i set in control 3 be it required or disabled.
So what should display as
Optional,Optional,Required,Optional,Optional etc
It displays as
Optional,Optional,Required,Required,Required.
Any ideas?
**** EDIT ***
Ok Definitly a binding issue to the Dropdownlistfor...
i replaced them with
<select id="Control1" name="Control1" class="form-control">
@foreach (SelectListItem option in ViewBag.StateList)
{
if (option.Value == Model.Control1.ToString())
{
<option value="@option.Value" selected='selected'>@option.Text</option>
}
else
{
<option value="@option.Value">@option.Text</option>
}
}
</select>
and it works as expected....
this unfortunately turns one line of code into 13.... which i'm not particularly happy about.... so hopefully this info will help in finding a solution using the intended use of dropdownlist for....
c# asp.net-mvc razor html.dropdownlistfor
asked Jan 3 at 10:59
L RileyL Riley
124113
Your 3rd and 4th DropDown, what does the@Html.DropDownListForlook like?
– Izzy
Jan 3 at 11:07
exactly the same just with a different prop binding eg@Html.DropDownListFor(x=>x.Control3, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"}),@Html.DropDownListFor(x=>x.Control4, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
– L Riley
Jan 3 at 11:33
If you put a breakpoint, doControl4andControl5have the values you expect?
– Dan Dumitru
Jan 3 at 11:40
When the record comes from the db 4 & 5 have the values i'm expecting so its definitely not a source data issue but a display or binding problem. They are being passed the correct values (null) but are displaying the first non null value that's displayed.
– L Riley
Jan 3 at 11:49
@LRiley Make yourControl4&Control5propsnullable
– Izzy
Jan 3 at 11:51
|
show 1 more comment
I have a page which sets the controls on another page to required (-1), disabled (0) or optional (null) from a db table.
They all use the same Viewbag param as the source.
here is the dropdown code which is repeated x number of times.
@Html.DropDownListFor(x=>x.Control1, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control2, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control3, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control4, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control5, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
StateList Contains
List<SelectListItem> states = new List<SelectListItem>();
states.Add(new SelectListItem { Text = "Required", Value = "-1" });
states.Add(new SelectListItem { Text = "Disabled", Value = "0" });
ViewBag.StateList = states;
This loads up correctly if they are all null, they all display optional.
if i set each one to either required or disabled it works correctly as well.
if i leave the first couple to optional and set number 3 to required and leave the rest it saves correctly in the db as
null,null,-1,null,null,etc
but when it displays the first two are optional but all others are set to whatever i set in control 3 be it required or disabled.
So what should display as
Optional,Optional,Required,Optional,Optional etc
It displays as
Optional,Optional,Required,Required,Required.
Any ideas?
**** EDIT ***
Ok Definitly a binding issue to the Dropdownlistfor...
i replaced them with
<select id="Control1" name="Control1" class="form-control">
@foreach (SelectListItem option in ViewBag.StateList)
{
if (option.Value == Model.Control1.ToString())
{
<option value="@option.Value" selected='selected'>@option.Text</option>
}
else
{
<option value="@option.Value">@option.Text</option>
}
}
</select>
and it works as expected....
this unfortunately turns one line of code into 13.... which i'm not particularly happy about.... so hopefully this info will help in finding a solution using the intended use of dropdownlist for....
c# asp.net-mvc razor html.dropdownlistfor
asked Jan 3 at 10:59
L RileyL Riley
124113
I have a page which sets the controls on another page to required (-1), disabled (0) or optional (null) from a db table.
They all use the same Viewbag param as the source.
here is the dropdown code which is repeated x number of times.
@Html.DropDownListFor(x=>x.Control1, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control2, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control3, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control4, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
@Html.DropDownListFor(x=>x.Control5, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
StateList Contains
List<SelectListItem> states = new List<SelectListItem>();
states.Add(new SelectListItem { Text = "Required", Value = "-1" });
states.Add(new SelectListItem { Text = "Disabled", Value = "0" });
ViewBag.StateList = states;
This loads up correctly if they are all null, they all display optional.
if i set each one to either required or disabled it works correctly as well.
if i leave the first couple to optional and set number 3 to required and leave the rest it saves correctly in the db as
null,null,-1,null,null,etc
but when it displays the first two are optional but all others are set to whatever i set in control 3 be it required or disabled.
So what should display as
Optional,Optional,Required,Optional,Optional etc
It displays as
Optional,Optional,Required,Required,Required.
Any ideas?
**** EDIT ***
Ok Definitly a binding issue to the Dropdownlistfor...
i replaced them with
<select id="Control1" name="Control1" class="form-control">
@foreach (SelectListItem option in ViewBag.StateList)
{
if (option.Value == Model.Control1.ToString())
{
<option value="@option.Value" selected='selected'>@option.Text</option>
}
else
{
<option value="@option.Value">@option.Text</option>
}
}
</select>
and it works as expected....
this unfortunately turns one line of code into 13.... which i'm not particularly happy about.... so hopefully this info will help in finding a solution using the intended use of dropdownlist for....
c# asp.net-mvc razor html.dropdownlistfor
c# asp.net-mvc razor html.dropdownlistfor
asked Jan 3 at 10:59
L RileyL Riley
124113
asked Jan 3 at 10:59
L RileyL Riley
124113
edited Jan 4 at 10:00
L Riley
asked Jan 3 at 10:59
L RileyL Riley
124113
asked Jan 3 at 10:59
L RileyL Riley
124113
asked Jan 3 at 10:59
L RileyL Riley
124113
124113
Your 3rd and 4th DropDown, what does the@Html.DropDownListForlook like?
– Izzy
Jan 3 at 11:07
exactly the same just with a different prop binding eg@Html.DropDownListFor(x=>x.Control3, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"}),@Html.DropDownListFor(x=>x.Control4, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
– L Riley
Jan 3 at 11:33
If you put a breakpoint, doControl4andControl5have the values you expect?
– Dan Dumitru
Jan 3 at 11:40
When the record comes from the db 4 & 5 have the values i'm expecting so its definitely not a source data issue but a display or binding problem. They are being passed the correct values (null) but are displaying the first non null value that's displayed.
– L Riley
Jan 3 at 11:49
@LRiley Make yourControl4&Control5propsnullable
– Izzy
Jan 3 at 11:51
|
show 1 more comment
Your 3rd and 4th DropDown, what does the@Html.DropDownListForlook like?
– Izzy
Jan 3 at 11:07
exactly the same just with a different prop binding eg@Html.DropDownListFor(x=>x.Control3, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"}),@Html.DropDownListFor(x=>x.Control4, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})
– L Riley
Jan 3 at 11:33
If you put a breakpoint, doControl4andControl5have the values you expect?
– Dan Dumitru
Jan 3 at 11:40
When the record comes from the db 4 & 5 have the values i'm expecting so its definitely not a source data issue but a display or binding problem. They are being passed the correct values (null) but are displaying the first non null value that's displayed.
– L Riley
Jan 3 at 11:49
@LRiley Make yourControl4&Control5propsnullable
– Izzy
Jan 3 at 11:51
Your 3rd and 4th DropDown, what does the
@Html.DropDownListFor look like?– Izzy
Jan 3 at 11:07
Your 3rd and 4th DropDown, what does the
@Html.DropDownListFor look like?– Izzy
Jan 3 at 11:07
exactly the same just with a different prop binding eg
@Html.DropDownListFor(x=>x.Control3, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"}) , @Html.DropDownListFor(x=>x.Control4, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})– L Riley
Jan 3 at 11:33
exactly the same just with a different prop binding eg
@Html.DropDownListFor(x=>x.Control3, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"}) , @Html.DropDownListFor(x=>x.Control4, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})– L Riley
Jan 3 at 11:33
If you put a breakpoint, do
Control4 and Control5 have the values you expect?– Dan Dumitru
Jan 3 at 11:40
If you put a breakpoint, do
Control4 and Control5 have the values you expect?– Dan Dumitru
Jan 3 at 11:40
When the record comes from the db 4 & 5 have the values i'm expecting so its definitely not a source data issue but a display or binding problem. They are being passed the correct values (null) but are displaying the first non null value that's displayed.
– L Riley
Jan 3 at 11:49
When the record comes from the db 4 & 5 have the values i'm expecting so its definitely not a source data issue but a display or binding problem. They are being passed the correct values (null) but are displaying the first non null value that's displayed.
– L Riley
Jan 3 at 11:49
@LRiley Make your
Control4 & Control5 props nullable– Izzy
Jan 3 at 11:51
@LRiley Make your
Control4 & Control5 props nullable– Izzy
Jan 3 at 11:51
|
show 1 more comment
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Your 3rd and 4th DropDown, what does the
@Html.DropDownListForlook like?– Izzy
Jan 3 at 11:07
exactly the same just with a different prop binding eg
@Html.DropDownListFor(x=>x.Control3, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"}),@Html.DropDownListFor(x=>x.Control4, (IEnumerable<SelectListItem>) ViewBag.StateList, "Optional", new {@class = "form-control"})– L Riley
Jan 3 at 11:33
If you put a breakpoint, do
Control4andControl5have the values you expect?– Dan Dumitru
Jan 3 at 11:40
When the record comes from the db 4 & 5 have the values i'm expecting so its definitely not a source data issue but a display or binding problem. They are being passed the correct values (null) but are displaying the first non null value that's displayed.
– L Riley
Jan 3 at 11:49
@LRiley Make your
Control4&Control5propsnullable– Izzy
Jan 3 at 11:51