I have a IEnumerable ViewModel. This has the same names and I want to select only one name and display it in the header. Please suggest.
My code is a below. I am trying to use distinct but it does not work
#foreach (var item in Model.abc)
{
{
<table>
<tr>
<td style="width:100px" >#Html.Label("Name")</td>
<td style="width:225px"> #Html.DisplayTextFor(model => item.Name.Distinct())</td>
</tr>
</table>
}
}
To be more specific: my result will have only names {a,a,a,a,a} so I just want to pick the single {a} and display it.
This has the same names and i want to select only one name and display
it in the header.
If they all are the same and assuming Name implements IEnumerable you could try First:
Update: add a new property to your model
otherProperty = item.Name.First();
Then:
#Html.DisplayTextFor(model => item.otherProperty)
use this code in your app
#foreach (var item in Model.Select(x => x.Title).Distinct())
{
<option>#item</option>
}
you can use #html.display(X=>item) instead #item
Related
Hi I have get records in ViewData["TutorList"] = GetData.Tables[0];
Here GetData DataSet and in that table[0] is bind with ViewData["TutorList"]
#foreach (var item in (DataTable)ViewData["TutorList"])
{
<tr>
<td>#item["Name"].ToString()</td>
</tr>
}
How Can I get all the records in foreach
The following code should give you want you want
#foreach (DataRow item in ((DataTable)ViewData["TutorList"]).Rows)
{
<tr>
<td>#item["Name"].ToString()</td>
</tr>
}
But I would suggest that you use a view model specific to the view and use the associated Html helpers in your view.
I have a simple razor page, where the first part correctly shows information from each element in my model in a table. After that I'm trying to use DisplayFor to show me every property in the model, but it generates 123 for each iteration. What am I doing wrong?
#model System.Data.Entity.IDbSet<DBFramework.MyPerson>
#{
ViewBag.Title = "Home Page";
}
<p></p>
<table border="1">
<thead>
<tr>
<th style="width:300px;">Name</th>
<th style="width:300px;">Age</th>
</tr>
</thead>
#foreach (var p in Model)
{
<tr>
<td>#Html.Label(p.Name)</td>
<td>#Html.Label(p.Age.ToString())</td>
</tr>
}
</table>
#foreach (DBFramework.MyPerson x in Model)
{
#Html.DisplayForModel(x)<br/>
}
Creates the following output:
Name Age
Mike 40
Penny 1
Kunal 30
123
123
123
Try this:
#foreach (var item in Model)
{
#Html.DisplayFor(model => item)
}
DisplayFor and DisplayForModel are used with templates in Views\Shared\DisplayTemplates.
When you call DisplayForModel, it will take the page model (Model) and if you specify a parameter, will try to load the template with the name provided (if string) or add the object as additional data in ViewData. When you called:
#foreach (DBFramework.MyPerson x in Model)
{
#Html.DisplayForModel(x)<br/>
}
You told it - Display Model which is type System.Data.Entity.IDbSet<DBFramework.MyPerson> and add MyPerson in the template ViewData. Do this 3 times. You also didn't give him a hint to select a DisplayTemplate and it will try to use convention to find it.
As Bappi Datta said, if you want to display a template for MyPerson, you need to call:
#foreach (var item in Model)
{
#Html.DisplayFor(model => item)
}
However, you need a MyPerson display template created which accepts #model DBFramework.MyPerson to render the item or it will simply do a .ToString() by default I believe.
i want to send two model in my view
and in other page maybe and need more
controller
ViewBag.Users = db.Users.ToList();
and in View
#using Documentation.Models
#{
var Users = (Documentation.Models.User)ViewBag.Users;
}
<table>
#foreach (var item in Users) {
<tr>
<td>
#Html.DisplayFor(item.username)
</td>
</tr>
}
</table>
but i get no answer , i know my code is not right
i got this error
foreach statement cannot operate on variables of type 'Documentation.Models.User' because 'Documentation.Models.User' does not contain a public definition for 'GetEnumerator'
you should cast viewbag.model to List of User. Not to User.
#{
var Users = (List<User>)ViewBag.Users;
}
I get a "NullReferenceException was unhandled by user code" error with the following code in my View when I pass in a null value via my controller. There are situations where I want to pass in a null value, but I do not want an error thrown when this happens. What should I change my code to?
Originally my code was:
#foreach (var item in Model.MyModelStuff)
{
<tr>
<td>
#Html.DisplayFor(modelItem => item.Bla.Title)
</td>
<tr>
}
I have tried the following with no success:
#foreach (var item in Model.MyModelStuff.Where( item => item.MyModelStuff != null))
etc. . .
How do I change the code so that it will handle null without throwing an error? I've read I may need to be returning an empty collection of my model (?), how would I go about doing that - if it is indeed the necessary thing to do?
If my understanding is correct your collection is null.
A collection should never be null, like you said you should return an empty collection instead and prevent your collection to be corrupted not exposing the real collection:
public IList<Employee> Employees
{
get;
private set;
}
And initialize your collection inside the constructor
this.Employees = new List<Employee>();
Honestly, I think a null model is a poor choice. But if you insist, just add an if check:
#if (Model != null) {
foreach (var item in Model.MyModelStuff)
{
<tr>
<td>
#Html.DisplayFor(modelItem => item.Bla.Title)
</td>
<tr>
}
}
I have a textarea that represents a description field. The descriptions have commas so when trying to split the field's descriptions the data is not parsed correctly. How can I get each row's description correctly.
var DescList = FormValues["Item.Description"].Split(',').Select(item => item).ToList<string>();
//will not work for obvious reasons. Comma delimited FormCollection has commas to identify separate row data.
It seems like Microsoft designed the FormsCollection without the textarea control in mind. A text area with commas will not work when trying to access each value. What is interesting is that the _entriestables property has it in the perfect format but they chose to make it a private property. Very frustrating.
`
Here is the important part of my viewmodel.
public class TenantViewModel
{
public Tenant Tenant { get; set; }
public Site Site { get; set; }
}
My view is populated like this:
if (Model != null && Model.Tenant != null && Model.Tenant.Site != null && Model.Tenant.Site.Count() > 0)
{<div class="detailsbox_view">
<table id="tblTenantSites">
<tr>
<th>#Html.LabelFor(item => item.Site.Title)</th>
<th>#Html.LabelFor(item => item.Site.Description)</th>
</tr>
#foreach (var Item in Model.Tenant.Sites)
{
<tr>
#Html.HiddenFor(modelItem => Item.SiteId)
<td>
#Html.EditorFor(modelItem => Item.Title)
</td>
<td>
#Html.TextAreaFor(modelItem => Item.Description, new {#width="400" })
</td>
</tr> }
</table>
As you see this site table is a child of Tenant object. This child record does not get automatically updated using this method but the Tenant data does automatically get updated. This is the reason I tried the FormColelction instead.
Is there something I am missing to make this work?
try with this useful function
ValueProviderResult Match=FormCollection.GetValue("ValueProvider");
When you have multiple fields with the same name attribute, they'll come back into your FormCollection as an array. So upon posting a view like this:
<form action="/Home/MyAction">
<textarea id="row_one_description" name="description">
First row's description
</textarea>
<textarea id="row_two_description" name="description">
Second row's description
</textarea>
<input type="submit" value="Submit" />
</form>
you could do something like this in your action
[HttpPost]
public ActionResult MyAction(FormCollection collection)
{
var descriptionArray = collection["description"];
string firstRowDescription = descriptionArray[0];
string secondRowDescription = descriptionArray[1];
}
I must note that this is not the recommended way of dealing with posted data. You should instead be building your view using data from a view model and using strongly typed html helpers to render your controls. That way when you post, your action can take the ViewModel as a parameter. Its properties will be automatically bound and you will have a nice object to play with.
[HttpPost]
public ActionResult MyAction(MyViewModel viewModel)
{
foreach (var row in viewModel.Rows)
{
string description = row.Description;
}
}
EDIT
I'm still assuming a lot about your ViewModel but perhaps try this:
<table id="tblTenantSites">
<tr>
<th>#Html.LabelFor(model => model.Site.Title)</th>
<th>#Html.LabelFor(model => model.Site.Description)</th>
</tr>
#for (var i = i < Model.Tenants.Sites.Count(); i++) {
<tr>
#Html.HiddenFor(model => model.Tenants.Sites[i].SiteId)
<td>
#Html.EditorFor(model => model.Tenants.Sites[i].Title)
</td>
<td>
#Html.TextAreaFor(model => model.Tenants.Sites[i].Description, new { #width="400" } )
</td>
</tr>
}
</table>
You could also try ,
string Match=FormCollection.GetValue("ValueProvider").AttemptedValue;