Object reference not set to an instance of an object

Question

Object reference not set to an instance of an object in asp.net c#

 

protected void Button1_Click1(object sender, EventArgs e)

{

if (!FileUpload1.HasFile)

{

Label9.Visible = true;

Label9.Text = "Please Select Image File";

}

else

{

int length = FileUpload1.PostedFile.ContentLength;

byte[] pic = new byte[length];

FileUpload1.PostedFile.InputStream.Read(pic, 0, length);

try

{

connection();

SqlCommand com = new SqlCommand("insert into Post_Room (Property_Type,Location,Mobile,Email,Rent,Description,Images) values (@Property_Type,@Location,@Mobile,@Email,@Rent,@Description,@Images)", con);

com.Parameters.AddWithValue("@Property_Type", DropDownList.SelectedValue);

com.Parameters.AddWithValue("@Location", txtlction.Text);

com.Parameters.AddWithValue("@Mobile", Txtmob.Text);

com.Parameters.AddWithValue("@Email", Txtemail.Text);

com.Parameters.AddWithValue("@Rent", Txtrent.Text);

com.Parameters.AddWithValue("@Description", Txtdec.Text);

com.Parameters.AddWithValue("@Images", pic);

com.ExecuteNonQuery();

Label9.Visible = true;

Label9.Text = "Image Uploaded Sucessfully"; //after Sucessfully uploaded image

con.Close();

}

catch (Exception ex)

{

Label9.Visible = true;

Label9.Text = ex.Message;

}

}

}