How to reload the form on the button click

Question

0.00/5 (No votes)

See more:

hi i am trying to reload/refresh my winform can any one please suggest me how to procede
my winform includes a data grid, text boxes, combobox. i want to reset them at there orignal position as they were when the form load.

What I have tried:

i made a button name new and on the new_click event i cleared all fields. it works fine but my datagrid looses its property.

this method i used to clear the data

private void ClearData()
        {
            _dtgrid.Rows.Clear();
            txtaddressline1.Text = "";
            txtaddressline2.Text = "";
            txtBillValue.Text = "";
            txtCUSTOMERNAMETEXT.Text = "";
            txtDiscountAmt.Text = "";
            txtDisPer.Text = "";
            txtgrn.Text = "";
            txtGSTNO.Text = "";
            txtINVOICENO.Text = "";
            txtname.Text = "";
            txtRoundOf.Text = "";
            txtTRANSPORT.Text = "";
            txtvichle.Text = "";
            btnCustomer.Focus();
            this.Refresh();
        }

this is the buttion click event

private void NEW_Click(object sender, EventArgs e)
        {
            ClearData();
            cmbINVOICETYPE.Focus();
        }

Posted 21-Jun-19 4:00am

MukulMohal

Updated 21-Jun-19 19:34pm

Add a Solution

Comments

CHill60 21-Jun-19 10:15am

You must have some code to populate the controls when you load the form - just call that again from the button

MukulMohal 21-Jun-19 10:35am

it gives me error like 'A column named 'Item' already belongs to this DataTable.'

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2019-06-21T04:23:00

Solution 1

Quote:
it works fine but my datagrid loses its property.

Well yes, it will:

C#

private void ClearData()
{
    _dtgrid.Rows.Clear();

If you specifically remove all data from it, it will indeed lose all data...

Posted 21-Jun-19 4:23am

OriginalGriff

Comments

MukulMohal 21-Jun-19 10:36am

it even losses it data binding

BillWoodruff · Answer 2 · 2019-06-21T19:34:00

Define a default name for the DataTable, and save the existing DataGreidView structure and data:

// required: using System.Data;

public const string DTBackUp = "DTBackUp";

// in the Form Load Event, or in another method
dataGridView1.DataSource = dt;

WriteXML(dt);

When you want to restore the DataGridView:

DataTable dt = this.ReadXML();
this.dataGridView1.DataSource = dt;

Using these two methods:

private DataTable ReadXML()
{
    OpenFileDialog ofd = new OpenFileDialog();
    ofd.Filter = "XML|*.xml";

    DataSet dt = new DataSet();

    if (ofd.ShowDialog() == DialogResult.OK)
    {
        try
        {
            dt.ReadXml(ofd.FileName);

            return dt.Tables[0];
        }
        catch (Exception ex)
        {
            throw new DataException("Fail to read");
        }
    }

    return null;
}

private void WriteXML(DataTable dt)
{
    // must have a name to serialize !
    if (dt.TableName == "") dt.TableName = DTBackUp;

    SaveFileDialog sfd = new SaveFileDialog();
    sfd.Filter = "XML|*.xml";

    if (sfd.ShowDialog() == DialogResult.OK)
    {
        try
        {
            dt.WriteXml(sfd.FileName);
        }
        catch (Exception ex)
        {
            throw new DataException("Fail to write");
        }
    }
}