An object reference is required for the non-static field, method, or property 'System.Windows.Controls.Primitives.Selector.SelectedItem.get

Question

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I get the error message:

An object reference is required for the non-static field, method, or property 'System.Windows.Controls.Primitives.Selector.SelectedItem.get

On the code below

C#

DataRowView drv = (DataRowView)DataGrid.SelectedItem;

This is the full button code.

C#

public void buyprintButton_Click(object sender, RoutedEventArgs e)
        {
            DataGrid momentsDataGrid = new DataGrid();

            DataRowView drv = (DataRowView)DataGrid.SelectedItem;

            String myTestColumnValue = drv["ColumnName"].ToString();
         //   String myTestColumnValue = drv[0].ToString();

            MessageBox.Show(myTestColumnValue);
        }

Could you please tell what is happening. Please dont tell me i have to put static or remove static from the name, as ive done that and none of them work.

Posted 26-Feb-14 4:35am

Chris_Burns

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2 solutions

Solution 2

Static members are used via the name of the declaring type. Non-static (instance members) are accessed via the instance.
For example:

C#

string myString = "AAA ABABAB";
string onlyA = myString.Replace("B", "");

// but NOT
//string onlyA = string.Replace("B", ""); // why?
// because -- replace from what?! from what string? from what INSTANCE?!

Is it clear?

—SA

Posted 26-Feb-14 10:18am

Sergey Alexandrovich Kryukov

Updated 26-Feb-14 11:15am

v2

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Kornfeld Eliyahu Peter · Accepted Answer · 2014-02-26T04:36:00

Solution 1

Change this:

C#

DataRowView drv = (DataRowView)DataGrid.SelectedItem;

to this:

C#

DataRowView drv = (DataRowView)momentsDataGrid.SelectedItem;

Posted 26-Feb-14 4:36am

Kornfeld Eliyahu Peter

An object reference is required for the non-static field, method, or property 'System.Windows.Controls.Primitives.Selector.SelectedItem.get

2 solutions

Solution 1

Solution 2

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An object reference is required for the non-static field, method, or property 'System.Windows.Controls.Primitives.Selector.SelectedItem.get

2 solutions

Solution 1

Solution 2

Add your solution here

Preview 0

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