pass datagridview between two forms

mohammad amrat

9y1.6kWindows Forms

I want to pass datagridview from this form "itemsManagement" to "editItems" form

public partial class itemsManagement : Form

{

public itemsManagement()

{

InitializeComponent();

this.ActiveForms = new Dictionary();

}

private Dictionary ActiveForms;

private void showform() where TSource : Form

{

Form form = null;

if (this.ActiveForms.ContainsKey(typeof(TSource)))

{

form = this.ActiveForms[typeof(TSource)];

form.WindowState = FormWindowState.Normal;

form.ShowDialog();

}

else

{

form = Activator.CreateInstance();

form.FormClosed += form_FormClosed;

form.ShowDialog();

this.ActiveForms.Add(typeof(TSource), form);

}

private void form_FormClosed(object sender, FormClosedEventArgs e)

{

this.ActiveForms.Remove(sender.GetType());

}

private void editItemToolStripMenuItem_Click(object sender, EventArgs e)

{

this.showform();

}

please help me

16 Replies

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Rafnas T P9y ago
try like this
PAL.editItems pal = new PAL.editItems();
pal.txt_itemNo.Text = this.dgv_items.CurrentRow.Cells[0].Value.ToString(); //assign before call
//....
this.showform();
mohammad amrat9y ago
request from me as this By using dictionary
in past I am using

public partial class itemsManagement: Form
{
private static itemsManagement frm;
static void frm_FormClosed(object sender, FormClosedEventArgs e)
{
frm = null;
}
public static itemsManagement getMainForm
{
get
{
if (frm == null)
{
frm = new itemsManagement();
frm.FormClosed += new FormClosedEventHandler(frm_FormClosed);
}
return frm;
}
}
public itemsManagement()
{
InitializeComponent();
if (frm == null)
{ frm = this; }
}
private void editToolStripMenuItem_Click(object sender, EventArgs e)
{
edititem x = new edititem();
x.textBox1.Text = this.dataGridView1.CurrentRow.Cells[0].Value.ToString();
x.textBox2.Text = this.dataGridView1.CurrentRow.Cells[1].Value.ToString();
x.textBox3.Text = this.dataGridView1.CurrentRow.Cells[2].Value.ToString();
x.textBox4.Text = this.dataGridView1.CurrentRow.Cells[3].Value.ToString();
x.textBox5.Text = this.dataGridView1.CurrentRow.Cells[4].Value.ToString();
x.textBox6.Text = this.dataGridView1.CurrentRow.Cells[5].Value.ToString();
x.textBox7.Text = this.dataGridView1.CurrentRow.Cells[6].Value.ToString();
x.textBox8.Text = this.dataGridView1.CurrentRow.Cells[7].Value.ToString();
x.ShowDialog();
}
Rafnas T P9y ago
have you changed code in edititems form as below

change
public DataGridView dg

to

public DataGridView dg=new DataGridView();

if not please change and let me know what is the output
mohammad amrat9y ago
An unhandled exception of type 'System.NullReferenceException' occurred in store_project.exe

this error becuase
PAL.editItems pal = new PAL.editItems();
pal.dg = dgv_items;

pal object different of object created and opened in showform() function
so dg is null
Rafnas T P9y ago
why do you want to use dictionary only
mohammad amrat9y ago
I want to pass datagridview from this form "itemsManagement" to "editItems" form
why ??
to fill controls(TextBoxes ,Picture Box,TimeDatePicker) in "editItems" form with the value of
current Row of datagridview in "itemsManagement" form
I can do this as below in normal situation(PAL : is a namespace , dgv_items : is the name of datagrid in "itemsManagement" form) :

private void editItemToolStripMenuItem_Click(object sender, EventArgs e)
{
PAL.edititems edititem = new PAL.edititems();
edititem.txt_itemNo.Text = this.dgv_items.CurrentRow.Cells[0].Value.ToString();
edititem.txt_itemName.Text = this.dgv_items.CurrentRow.Cells[1].Value.ToString();
........ elc
edititem.ShowDialog();
}

but when I use dictionary to show forms :
this.ActiveForms = new Dictionary();
private Dictionary ActiveForms;
private void showform() where TSource : Form
{
Form form = null;
if (this.ActiveForms.ContainsKey(typeof(TSource)))
{
form = this.ActiveForms[typeof(TSource)];
form.WindowState = FormWindowState.Normal;
form.ShowDialog();
}
else
{
form = Activator.CreateInstance();
form.FormClosed += form_FormClosed;
form.ShowDialog();
this.ActiveForms.Add(typeof(TSource), form);
}
}
private void form_FormClosed(object sender, FormClosedEventArgs e)
{
this.ActiveForms.Remove(sender.GetType());
}

I can not do this !!!
Rafnas T P9y ago
public DataGridView dg

to

public DataGridView dg=new DataGridView();

it will work
Rafnas T P9y ago
what error you got
mohammad amrat9y ago
I am try
public partial class editItems : Form
{
public DataGridView dg;
//...
}

and

in itemsManagement screen

private void editItemToolStripMenuItem_Click(object sender, EventArgs e)
{
PAL.editItems pal = new PAL.editItems();
pal.dg = dgv_items;
this.showform();
//..............
}
but error occur
Rafnas T P9y ago
try like this
in editItems declare public gridview as below

public partial class editItems : Form
{
public DataGridView dg;
//...
}

and

in itemsManagement screen

private void editItemToolStripMenuItem_Click(object sender, EventArgs e)
{
PAL.editItems pal = new PAL.editItems();
pal.dg = dgv_items;
this.showform();
//..............
}
mohammad amrat9y ago
my problem was not solved
Rafnas T P9y ago
if your problem got solved then please check accepted
mohammad amrat9y ago
Thanks Rafnas but this in the normal case but here I am using dictionary
Rafnas T P9y ago
you can do like this
for example
from Form1 I am passing frmdg grid to Form2 when you opening Form2 from Form1 as follows
Form2 frm2 = new Form2 (frmdg); //grid name- frmdg in Form1
frm2 .ShowDialog();
in Form2 loading constructor you have to change as below
public partial class Form2 : Form
{
  public Form2 (DataGridView dg) //dg is your datagrid view from Form1
  {
   InitializeComponent();
    //.....
  }
}
mohammad amrat9y ago
HI this is code as rar
Nilesh Shah9y ago
which is the variable name for gridview?

can you post your code as rar or zip file attachment