save xml format in c#

To show XML data into DataGridView , First am designing one form with some fields , one Save button and one DataGridView Control.

The Designed form is :

In this article am showing following steps:

1. Save data into XML file .
2. Retrieve data from XML file and bind that data to DataGridview.
3. Add two EDIT and DELETE columns to DataGridView.
4. Write edit,delete coding in dataGridView1_CellContentDoubleClick.

Save data into XML file:

For using XML add the following namespace:

                  using System.Xml;

Write the following code in Save button Click:

private void btnSave_Click(object sender, EventArgs e)

        {

       

                  string path = "AccountDetails.xml";

                XmlDocument doc = new XmlDocument();

                ////If there is no current file, then create a new one

                if (!System.IO.File.Exists(path))

                {

                    //Create neccessary nodes

                    XmlDeclaration declaration = doc.CreateXmlDeclaration("1.0", "UTF-8", "yes");

                    XmlComment comment = doc.CreateComment("This is an XML Generated File");

}

                else //If there is already a file

                {

                    //    //Load the XML File

                    doc.Load(path);

}

                    //Get the root element

                    XmlElement root = doc.CreateElement("BankAccount_Details");

                    XmlElement Subroot = doc.CreateElement("BankAccount");

                    XmlElement BankName = doc.CreateElement("BankName");

                    XmlElement AccountNumber = doc.CreateElement("AccountNumber");

                    XmlElement BankType = doc.CreateElement("BankType");

                    XmlElement Balance = doc.CreateElement("Balance");

                    //Add the values for each nodes

                    BankName.InnerText = comboBox1.SelectedItem.ToString();

                    AccountNumber.InnerText = txtAccNumber.Text;

                    if (rbtnCurrent.Checked)

                        BankType.InnerText = rbtnCurrent.Text;

                    else if (rbtnSaving.Checked)

                        BankType.InnerText = rbtnSaving.Text;

                    else

                        BankType.InnerText = rbtnOther.Text;

                    Balance.InnerText = txtBalance.Text;

                    //Construct the document

                    doc.AppendChild(declaration);

                    doc.AppendChild(comment);

                    doc.AppendChild(root);

                    root.AppendChild(Subroot);

                    Subroot.AppendChild(BankName);

                    Subroot.AppendChild(AccountNumber);

                    Subroot.AppendChild(BankType);

                    Subroot.AppendChild(Balance);

                    doc.Save(path);

                //Show  message

                MessageBox.Show("Records added Successfully");

                //Reset text fields for new input

                txtBalance.Text = String.Empty;

                txtAccNumber.Text = String.Empty;

                comboBox1.SelectedIndex = 0;

                                //To show added record in Gridview call LoadGrid() method which I show below

LoadGrid();

}

Retrieve data from XML file and bind  to DataGridview:

For  retrieve XML data  and bind to Gridview call the following method:

protected void LoadGrid()

        {

            DataSet xmlds = new DataSet();

            string path = "AccountDetails.xml";

            if (System.IO.File.Exists(path))

            {

                xmlds.ReadXml(path);

                if (xmlds.Tables.Count > 0)

                {

                    dataGridView1.DataSource = xmlds.Tables[0].DefaultView;

                   

                }

            }

       

        }

Call the above method in form page load also

private void Account_Details_Load(object sender, EventArgs e)

        {

            LoadGrid();

        }

       

Add  EDIT and DELETE columns to DataGridView:

For Editing and Deleting add two columns to DataGridView with Suitable Images. I am adding Delete Image in 1^st  column and Edit in 2^nd column.

For deleting and editing am taking account number as a parameter.

write the following code in dataGridView1_CellContentDoubleClick event:

private void dataGridView1_CellContentDoubleClick(object sender, DataGridViewCellEventArgs e)

        {

            if (e.RowIndex != -1)

            {

              

//For Deleting following code

                if (e.ColumnIndex == 0)

                {

                    DataGridViewRow row = dataGridView1.Rows[e.RowIndex];

                    string acnum = row.Cells[3].Value.ToString();

                    string path = "AccountDetails.xml";

                    XmlDocument doc = new XmlDocument();

                    doc.Load(path);

                    XmlNode node = doc.SelectSingleNode("/BankAccount_Details/BankAccount[AccountNumber='" + acnum + "']");

                    node.ParentNode.RemoveChild(node);

                    doc.Save(path);

                    MessageBox.Show("Selected Record Deleted Successfully");

                }  

                  

          

          //For Editing following code

                if (e.ColumnIndex == 1)

                {

                    DataGridViewRow row = dataGridView1.Rows[e.RowIndex];

                    int acnum = Convert.ToInt32(row.Cells[3].Value);

                    string path = "AccountDetails.xml";

                    XmlDocument doc = new XmlDocument();

                    doc.Load(path);

                    XmlNode node = doc.SelectSingleNode("/BankAccount_Details/BankAccount[AccountNumber='" + acnum + "']");

                    node.ParentNode.RemoveChild(node);

                    doc.Save(path);

                  

                    

                    ////If there is no current file, then create a new one

                    if (!System.IO.File.Exists(path))

                    {

                        //Create neccessary nodes

                         XmlDeclaration declaration  = doc.CreateXmlDeclaration("1.0", "UTF-8", "yes");

                     XmlComment comment = doc.CreateComment("This is an XML Generated File");

                       

                        doc.AppendChild(declaration);

                        doc.AppendChild(comment);

                    }

    //If there is already a file

                         else 

                        {

                        //    //Load the XML File

                        doc.Load(path);

                        }

                        XmlElement root = doc.CreateElement("BankAccount_Details");

                        XmlElement Subroot = doc.CreateElement("BankAccount");

                        XmlElement BankName = doc.CreateElement("BankName");

                        XmlElement AccountNumber = doc.CreateElement("AccountNumber");

                        XmlElement BankType = doc.CreateElement("BankType");

                        XmlElement Balance = doc.CreateElement("Balance");

                        //Add the values for each nodes

                        BankName.InnerText = row.Cells[2].ToString();

                        AccountNumber.InnerText = row.Cells[3].ToString();

                        BankType.InnerText = row.Cells[4].ToString();

                        Balance.InnerText = row.Cells[5].ToString();

                        //Construct the document

                        doc.AppendChild(root);

                        root.AppendChild(Subroot);

                        Subroot.AppendChild(BankName);

                        Subroot.AppendChild(AccountNumber);

                        Subroot.AppendChild(BankType);

                        Subroot.AppendChild(Balance);

                        doc.Save(path);

                        MessageBox.Show("Selected Record Edited Successfully");

                    }

                                        

                                         LoadGrid();                

                }

                   

           

                  

                }

       

Then run your application and see output :

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