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I am write some code.this is To log in the customer then find customer all data in another page.but execute code error is Object reference not set to an instance of an object. so Please help me the solve this problem....
Posted 2-Jul-12 18:56pm
Vani Kulkarni at 3-Jul-12 1:04am
Please post your code, also mark the exact line where you are getting this error.
Arundhati Mohanty at 17-Dec-13 1:25am
Hi i am workin in Silverlight5,VisualStudio2010,as i am new to it am not able to solve the problem,as i think i hv written all The codes correctly.
at SaveButton_Click(Object sender, RoutedEventArgs e) at System.Windows.Controls.Primitives.ButtonBase.OnClick() at System.Windows.Controls.Button.OnClick() at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e) at System.Windows.Controls.Control.OnMouseLeftButtonUp(Control ctrl, EventArgs e)
Rahul Rajat Singh at 3-Jul-12 2:56am
Show us the line where this exception is coming and we will try to find the null object for you.
Maria Norbert at 20-Dec-13 0:43am
Hey Guyz...

Me to getting the Same error..

But when i rebuild Website the error Solved..

The Same thing happens to my Team Mates.. Please Help to resolve this...
padiharprem at 25-Sep-14 7:23am
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.
padiharprem at 25-Sep-14 7:25am
How open formview edit mode base on click edit button on gridview

Please solution provided to me i am try it but i am not get success
Member 11401758 at 4-Jun-15 22:43pm
please, can someone help me out with the following lines of codes that throws: System.NullReferenceException: Object reference not set to an instance of an object.

Public Sub createGrid_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles createGrid.Click

Dim watershedLayer As MapWindow.Interfaces.Layer
Dim watershedLayerHandle As Integer = Utilities.GetWatershedLayerHandle()
' If Not (watershedLayer Is Nothing) Then
If mw.Layers.IsValidHandle(watershedLayerHandle) Then
watershedLayer = mw.Layers.Item(watershedLayerHandle)
If (findWatershedShapefile.ShowDialog = Windows.Forms.DialogResult.Cancel) Then Exit Sub
Dim layerName As String = "Watershed (" + System.IO.Path.GetFileName(WatershedShapePath) + ")"
watershedLayer = mw.Layers.Add(WatershedShapePath, layerName)
'watershedLayer.Name = layerName
End If
'End If
' Since this is "Create" grid it uses Nothing as the Grid layer so that GridForm will create one from scratch.
gridForm = New MWAGNPSLib.GridForm(mw, watershedLayer, Nothing)
End Sub
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Solution 1

Its a normal error what you are getting.

Please provide the code for proper solution.

Hint: I your code there is some object which is NULL. and you will be trying to read some property value of that object.

This is the reason for the Object reference not set to an instance of an object.
Member 10135342 at 3-Jul-13 6:09am
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Configuration;
using System.Data.SqlClient;
using UserDetails;

namespace RegisterUser
public static class RegUser

public static int insert(user obj)

string cnstr = ConfigurationManager.ConnectionStrings["myCnstr"].ToString();
using (SqlConnection cn = new SqlConnection(cnstr))

here i got

Object reference not set to an instance of an object.

string myquery = "INSERT INTO Registration(Name,address,EmailAddress,Password,Phoneno,Answer) Values (@Name,@address,@emailaddress,@Password,@Phoneno,@Answer)";
using (SqlCommand cmd = new SqlCommand(myquery, cn))
cmd.Parameters.AddWithValue("@Name", obj.Name);
cmd.Parameters.AddWithValue("@address", obj.address);
cmd.Parameters.AddWithValue("@emailaddress", obj.EmailAdress);
cmd.Parameters.AddWithValue("@Password", obj.Password);
cmd.Parameters.AddWithValue("@Phoneno", obj.PhoneNo);
cmd.Parameters.AddWithValue("@Answer", obj.Answer);

return cmd.ExecuteNonQuery();
// "INSERT INTO Registration(Name,address,Emailid,PhoneNum)( VALUES(@Name,@address,@emailaddress,@Password,@Phoneno,@Answer)

2irfanshaikh at 3-Jul-13 11:14am
Please send your config file
Afzaal Ahmad Zeeshan at 12-Jun-15 9:15am
Not always a null is the problem. A type mismatch can also be the problem.

My vote of 4.
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Solution 2

When ever you try to retrieve data from a Null object you will get this error. Before retrieving the data from any object check for NULL.
Afzaal Ahmad Zeeshan at 12-Jun-15 9:17am
That can work, but sometimes a type-mismatch can also trigger this exception. But a good suggestion to test the value.

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