MVC :: Getting Object From HTML.DropdownList()?

Jun 11, 2010

Is it possible to get an object of type <T> as selected value?

I have an object "SearchInput" with a member "Bu" of type "BusinessUnit".

I would like to show a select box so that the user can select one of them.

The following code populates the list in the action method:

[Code]....

In the strongly typed view (with SearchInput as model) the list is displayed like this:

[Code]....

which passes only the selected Id but I would like to use the first option.

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<asp:TemplateField HeaderText="RegionNavn">
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[code]...

On Edit Click, the DropDownList in the GridView brings the previously selected value.On Update Click, the error is: "System.FormatException: Input string was not in a correct format."

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On Edit Click, the DropDownList values in the GridView is not firing and the following error shows.Object reference not set to an instance of an object. How to implement the code when having a value of type Int ?

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Data Controls :: Accessing DropDownList In GridView Row - Object Reference Not Set To Instance Of Object

May 30, 2013

I have this part in the Gridview.

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Jan 13, 2010

I am trying to use

[Code]....

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Jul 12, 2013

In manager.aspx page I have gridview that bind product information from database in this gridview I define linkbutton EDIT that when users click on it they go to Edit.aspx page and in this page users can see their product information and Edit them

In Edit.aspx page I use some textbox and dropdownlist and bind them from database

int data1 = Convert.ToInt32(Request.QueryString["Id"].ToString());
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[Code] ....

When I click on EDIt linkbutton from gridview it go to Edit.aspx page and bind all  data from database and ofcourse show data in Dropdownlist untill now every thing is ok

but when I change some Item in this page i.e Name of product when I changed and clicked on button to update table in database it update data in database but below error happen too

Server Error in '/behtop website' Application.

Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

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Line 79:
Line 80:
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Line 83:

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I use this code for binding my dropdownlist from database

DDL1.Items.FindByValue(_dr["classification"].ToString()).Selected = true;
 
But this error occur

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Object reference not set to an instance of an object.
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Line 43: CKEditorControl1.Text = _dr["Description"].ToString();
Line 44: //DDL1.Items.FindByValue(_dr["classification"].ToString()).Selected = true;
Line 45: DDL2.Items.FindByValue(_dr["subset"].ToString()).Selected = true; Line 46:

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[code]....

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