How to handle these errors?

Question

This is my code
I need help to handle a few errors that i dont know why im seeing
1. Automatically a new grid for Image is created.
2. An error keeps popping up
using  System;
using  System.Collections.Generic;
using  System.ComponentModel;
using  System.Data;
using  System.Drawing;
using  System.Linq;
using  System.Text;
using  System.Threading.Tasks;
using  System.Windows.Forms;
using  System.IO;
namespace  Amal_Inventory
{
public  partial  class  Form1 : Form
{
public  Form1()
{
InitializeComponent();
}
private   void  label1_Click( object  sender, EventArgs e)
{
}
private   void  button3_Click( object  sender, EventArgs e)
{
}
private   void  button4_Click( object  sender, EventArgs e)
{
}
private   void  button6_Click( object  sender, EventArgs e)
{
}
private   void  button5_Click( object  sender, EventArgs e)
{
if  (MessageBox.Show( "Sure ??" ,  "Delete" , MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation)==DialogResult.OK)
{
if  ( this .dataGridView1.SelectedRows.Count > 0)
{
dataGridView1.Rows.RemoveAt( this .dataGridView1.SelectedRows[0].Index);
}
textBox1.Text =  "" ;
textBox2.Text =  "" ;
textBox3.Text =  "" ;
textBox4.Text =  "" ;
textBox5.Text =  "" ;
textBox6.Text =  "" ;
textBox7.Text =  "" ;
textBox8.Text =  "" ;
textBox9.Text =  "" ;
}
}
private   void  button7_Click( object  sender, EventArgs e)
{
textBox1.Text =  "" ;
textBox2.Text =  "" ;
textBox3.Text =  "" ;
textBox4.Text =  "" ;
textBox5.Text =  "" ;
textBox6.Text =  "" ;
textBox7.Text =  "" ;
textBox8.Text =  "" ;
textBox9.Text =  "" ;
pictureBox1.Image =  "" ;
}
private   void  button8_Click( object  sender, EventArgs e)
{
Update();
}
private   void  button2_Click( object  sender, EventArgs e)
{
int  n = dataGridView1.Rows.Add();
dataGridView1.Rows[n].Cells[0].Value = textBox1.Text;
dataGridView1.Rows[n].Cells[1].Value = textBox2.Text;
dataGridView1.Rows[n].Cells[2].Value = textBox3.Text;
dataGridView1.Rows[n].Cells[3].Value = textBox4.Text;
dataGridView1.Rows[n].Cells[4].Value = textBox5.Text;
dataGridView1.Rows[n].Cells[5].Value = textBox6.Text;
dataGridView1.Rows[n].Cells[6].Value = textBox7.Text;
dataGridView1.Rows[n].Cells[7].Value = textBox8.Text;
dataGridView1.Rows[n].Cells[8].Value = textBox9.Text;
MemoryStream mmst =  new  MemoryStream();
pictureBox1.Image.Save(mmst, pictureBox1.Image.RawFormat);
byte [] img = mmst.ToArray();
dataGridView1.Rows.Add(img);
}
private   void  Form1_Load( object  sender, EventArgs e)
{
DataGridViewImageColumn dvgimage =  new  DataGridViewImageColumn();
dvgimage.HeaderText =  "Image" ;
dvgimage.ImageLayout = DataGridViewImageCellLayout.Stretch;
dataGridView1.Columns.Add(dvgimage);
dataGridView1.RowTemplate.Height = 120;
dataGridView1.AllowUserToAddRows =  false ;
}
private   void  Form1_FormClosing( object  sender, FormClosingEventArgs e)
{
DialogResult confirm = MessageBox.Show( "Are you sure?" ,  "Exit" , MessageBoxButtons.YesNo);
}
private   void  button1_Click( object  sender, EventArgs e)
{
OpenFileDialog openfiledialogue1 =  new  OpenFileDialog();
openfiledialogue1.Filter =  "Choose Image (*.jpg;*.png;*.gif)|*.jpg;*.png;*.gif" ;
if  (openfiledialogue1.ShowDialog() == DialogResult.OK)
{
pictureBox1.Image =  new  Bitmap(openfiledialogue1.FileName);
}
}
}
}

Sachin Singh · Answer

Remove everything from your form load and change button2 click as

private void button2_Click(object sender, EventArgs e)
{
MemoryStream mmst = new MemoryStream();
pictureBox1.Image.Save(mmst, pictureBox1.Image.RawFormat);
byte[] img = mmst.ToArray();
dataGridView1.Rows.Add(textBox1.Text,textBox2.Text,textBox3.Text,textBox4.Text,textBox5.Text,
textBox6.Text,textBox7.Text,textBox8.Text,img);
}

Satya Karki · Answer

Regarding your error message, there is conversion of string to image in your code. It is not clear to find it out from the code provided by you. You need to debug it.

Rijwan Ansari · Answer

According to error, you are converting string into image somewhere.  Would you please debug and find exact point of error?    May be here but not sure. MemoryStream mmst =  new  MemoryStream();      pictureBox1.Image.Save(mmst, pictureBox1.Image.RawFormat);      byte [] img = mmst.ToArray();      dataGridView1.Rows.Add(img);   Regards Rijwan

Kiran Mohanty · Answer

Here is an article for your reference .  https://www.c-sharpcorner.com/UploadFile/77a82c/binding-image-with-gridview-and-update-image-in-gridview/