error in get selecteditem in wpf

Question

4.00/5 (2 votes)

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hey guys
i have wpf Data Grid with below columns

IDStuff(int), Title(string), Type(string),  InitialBalance(int)

and below class

C#

class stuffdt
{

    public int IDStuff { set; get; }
    public string Title { set; get; }
    public string Type { set; get; }
    public int InitialBalance { set; get; }


}

now i write this code

C#

private void dtstuff_PreviewMouseDoubleClick(object sender, MouseButtonEventArgs e)
  {
      List<cellprod> cp = new List<cellprod>();
      stuffdt sd =(stuffdt)this.dtstuff.SelectedItem;
  }

but i have this error

Unable to cast object of type '<>f__AnonymousType1`4[System.Int32,System.String,System.String,System.Int32]' to type 'stuffdt'.

Posted 10-Aug-13 7:07am

aref.bozorgmehr

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Comments

Clifford Nelson 10-Aug-13 14:39pm

There is not enough information to figure out what your problem is. I would put a breakpoint in in the doubleclick and see what your situation really is

2 solutions

Solution 1

you cannot typecast dynamic objects. the two have to be identical for them to be mapped correctly.

i'd suggest you try using the listbox itemsource to retrieve the records that you want. something

like:

C#

private void dtstuff_PreviewMouseDoubleClick(object sender, MouseButtonEventArgs e)
{
...

stuffdt sd = {DataGridItemSource}[dtstuff.SelectedIndex]; 

//assuming the datagriditemsource is a list of type stuffdt

...
}

Posted 10-Aug-13 9:06am

Member 9549287

Comments

aref.bozorgmehr 10-Aug-13 15:32pm

i have this Error The name 'DataGridItemSource' does not exist in the current context

Member 9549287 10-Aug-13 15:39pm

the " { ... } " meant you had to replace the entire {DataGridItemSource} with the variable or view model where your data grid is getting it's values.

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Maciej Los · Accepted Answer · 2013-08-10T09:08:00

Solution 2

Have a look at similar questions:
Reading a cell value in a WPF DataGrid[^]
how to get datagrid particular cell value in wpf ?[^]

Posted 10-Aug-13 9:08am

Maciej Los

Updated 10-Aug-13 11:42am

v3

Comments

aref.bozorgmehr 10-Aug-13 17:39pm

i fill may data grid with linq to entity when i use your link solution my result is null

Maciej Los 10-Aug-13 17:42pm

See updated answer ;)

aref.bozorgmehr 10-Aug-13 18:10pm

you are fantastic so thanks

Maciej Los 10-Aug-13 18:13pm

Thank you and you're welcome ;)