What happen with this message in displaying my report?

Hi Sirs!

Could you try to think with me this problem please:

I have two forms, on form1 (I use one "textbox1") and on form2 where there is my reportview tool with one "textbox1" also.

Now what I am doing? when I insert for example a name in textbox1 of the form1 and I press on my button to open the form2. Automatically, its transfert the textbox value of form1 to the form2's textbox1. Suddlently its make a filter and previsualize my report. Until there its work perfectly.

But and but when I insert (or write) a name to do the same find its give me this error message:

Cannot access a disposed object.

Object name: 'ReportViewer'.

Its doesnt give the error message when after to insert a name and show the report. Then when I stop the program and restart... And write other name. Its doesnt give that message. I am not sure if I am clearm with explanation. Have a look:

// the first form

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace FactuModelo

{

public partial class Facturacao : Form

{

Form2 f2;

public Facturacao()

{

InitializeComponent();

}

private void btnPrevisualizar_Click(object sender, EventArgs e)

{

if (f2 == null)

f2 = new Form2();

f2.ValueFromFacturacao(txtbxName.Text);

f2.Show();

}

--------------

//the secong form

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace FactuModelo

{

public partial class frmRptFactura : Form

{

public frmRptFactura()

{

InitializeComponent();

}

public void ValueFromFacturacao(string value)

{

textBox1.Text = value;

}

private void textBox1_TextChanged(object sender, EventArgs e)

{

this.factura_modeloTableAdapter.Fill(this.DSFactura.factura_modelo, textBox1.Text);

this.reportViewer1.RefreshReport();

}

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Dipankar Biswas12y ago
The problem is, that a closed form can not be used anymore (be reopened). Thats why the code you posted tries to stop closing and only hides your window. But for doing this, the Cancel-property must be set to true:

Example:

private void Max_FormClosing(object sender, FormClosingEventArgs e) {
this.Hide();
this.Parent = null;
e.Cancel=true;
}