Hi I want to save and load data from a datagridview to a xml. My idea is that I can save my datagridview to a xml how this -> "[date]_[name].xml" and later I can load this data. For this two operations I want to use two methods --> Save() and Load()
Save Datagridview To Xml File C
I try to safe my datagridview to XML but nothing happpend when I choose file.When I start console I see this:System.NullReferenceException: The object reference was not set to an object instance.
ADO.NET provides simple methods for working with XML data. In this walkthrough, you create a Windows application that loads XML data into a dataset. The dataset is then displayed in a DataGridView control. Finally, an XML schema based on the contents of the XML file is displayed in a text box.
Next, go to the activity_main.xml file, which represents the UI of the project. Below is the code for the activity_main.xml file. Comments are added inside the code to understand the code in more detail.
Create an XML file for each grid item to be displayed in GridView. Click on the app > res > layout > Right-Click > Layout Resource file and then name the file as card_item. Below is the code for the card_item.xml file.
Now click on app > java > apps package name > Right-Click on it. Then Click on New > Java Class. Name your Java/Kotlin Class file as CourseModel. Below is the code for the
Now click on app > java > apps package name > Right-Click on it. Then Click on New > Java Class. Name your Java Class file as CourseGVAdapter. Below is the code for the CourseGVAdapter file.
Hello JS, Microsoft Scripting Guy Ed Wilson here. It is amazing how quickly things change. It reminds me of the weather when I was in Lisbon, Portugal. The saying was if you did not like the weather, just wait a few minutes and it will change. The sunsets were stunning. I enjoyed walking along the waterfront and took the following photo on one of those walks. JS, I was thinking about creating a here-string that would contain the elements for an XML file, substitute values for the variables contained in the here-string, and then write that to a file. However, as I thought about it, I decided it might be error prone. I then thought about using the methods from the system.xml.xmldocument .NET Framework class to add elements and childnodes to an existing XML document. However, that ended up being too complicated. So I decided to cheat. The complete Add-XmlContentToFile.ps1 Windows PowerShell script is shown here.Add-XmlContentToFile.ps1
To illustrate adding content to an XML file, I am going to use the books.xml file that I copied from MSDN. The books.xml file contains a number of books and stores some important information about each book, such as author, title, price, and genre. This is shown in XML Notepadin the following image.
Piping the $doc variable to the Get-Member cmdlet confirms that you are now working with an instance of the System.XML.XMLDocument .NET Framework class. You can access the different elements of the books.xml file by using the same dotted notation you would use to work with any other object. The first node is catalog. This is shown here:PSC:\>$doc=[xml](Get-contentc:\fso\books.xml) PSC:\>$doc
The XmlElement class has a clone method that can be used to copy an entire XmlElement and store the copy in a variable. The values associated with each of the attributes of the element can then be modified directly, and the newly created and modified element can be written back to the XmlDocument. A new XmlElement will need to be created for each item that exists in the CSV file. To read the CSV file, use the Import-Csv cmdlet. This portion of the script is shown here:
After the attributes of the XmlElement have been filled out from the CSV file, the appendChild method is used to add the data in the newly created XmlElement to the XmlDocument. This is shown here:$doc.DocumentElement.AppendChild($element)
After you finish adding bindingsource to the DataGridView, you should see Form_Load as follows.private void frmExportDataTableToXml_Load(object sender, EventArgs e) // TODO: This line of code loads data into the 'appData.Customers' table. You can move, or remove it, as needed. this.customersTableAdapter.Fill(this.appData.Customers);DataTable to XML document C#Adding a click evet handler to the Export button allows you to export data from DataTable to Xml file.
I need some way to save and read a file using a DataGridView.Databases are out of the question, because I'm going for something template-style.And the user will probably make lots of templates.
GemBox.Spreadsheet.WinFormsUtilities namespace enables interoperability between GemBox.Spreadsheet and DataGridView control from a Windows Forms application.The namespace provides a DataGridViewConverter class which you can use to import or export an Excel file to the DataGridView control from C# and VB.NET.Besides the cell data, some additional information is imported or exported as well, such as hyperlinks, formatting, and images.
The following example shows how you can export an Excel file into the DataGridView control using the DataGridViewConverter.ExportToDataGridView method and how to import the DataGridView control to an Excel file using the DataGridViewConverter.ImportFromDataGridView method.C#VB.NET Copy View on GitHub using System;using System.Windows.Forms;using GemBox.Spreadsheet;using GemBox.Spreadsheet.WinFormsUtilities;public partial class Form1 : Form public Form1() SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY"); InitializeComponent(); private void btnLoadFile_Click(object sender, EventArgs e) " + "HTML files (*.html, *.htm) private void btnSave_Click(object sender, EventArgs e) *.mhtmlImports SystemImports System.Windows.FormsImports GemBox.SpreadsheetImports GemBox.Spreadsheet.WinFormsUtilitiesPublic Class Form1 Public Sub New() SpreadsheetInfo.SetLicense("FREE-LIMITED-KEY") InitializeComponent() End Sub Private Sub btnLoadFile_Click(sender As Object, e As EventArgs) Handles btnLoadFile.Click Dim openFileDialog As New OpenFileDialog() openFileDialog.Filter = "XLS files (*.xls, *.xlt)*.xls;*.xlt" & "XLSX files (*.xlsx, *.xlsm, *.xltx, *.xltm)*.xlsx;*.xlsm;*.xltx;*.xltm" & "ODS files (*.ods, *.ots)*.ods;*.ots" & "CSV files (*.csv, *.tsv)*.csv;*.tsv" & "HTML files (*.html, *.htm)*.html;*.htm" openFileDialog.FilterIndex = 2 If (openFileDialog.ShowDialog() = DialogResult.OK) Then Dim workbook = ExcelFile.Load(openFileDialog.FileName) Dim worksheet = workbook.Worksheets.ActiveWorksheet ' From ExcelFile to DataGridView. DataGridViewConverter.ExportToDataGridView( worksheet, Me.dataGridView1, New ExportToDataGridViewOptions() With .ColumnHeaders = True) End If End Sub Private Sub btnSave_Click(sender As Object, e As EventArgs) Handles btnSave.Click Dim saveFileDialog As New SaveFileDialog() saveFileDialog.Filter = "XLS (*.xls)*.xls" & "XLT (*.xlt)*.xlt" & "XLSX (*.xlsx)*.xlsx" & "XLSM (*.xlsm)*.xlsm" & "XLTX (*.xltx)*.xltx" & "XLTM (*.xltm)*.xltm" & "ODS (*.ods)*.ods" & "OTS (*.ots)*.ots" & "CSV (*.csv)*.csv" & "TSV (*.tsv)*.tsv" & "HTML (*.html)*.html" & "MHTML (.mhtml)*.mhtml" & "PDF (*.pdf)*.pdf" & "XPS (*.xps)*.xps" & "BMP (*.bmp)*.bmp" & "GIF (*.gif)*.gif" & "JPEG (*.jpg)*.jpg" & "PNG (*.png)*.png" & "TIFF (*.tif)*.tif" & "WMP (*.wdp)*.wdp" saveFileDialog.FilterIndex = 3 If (saveFileDialog.ShowDialog() = DialogResult.OK) Then Dim workbook = New ExcelFile() Dim worksheet = workbook.Worksheets.Add("Sheet1") ' From DataGridView to ExcelFile. DataGridViewConverter.ImportFromDataGridView( worksheet, Me.dataGridView1, New ImportFromDataGridViewOptions() With .ColumnHeaders = True) workbook.Save(saveFileDialog.FileName) End If End SubEnd ClassSee alsoCreate, read, write Excel files from Classic ASP
string filePath =@"c:\data.xml"; DataSet dataSet = new DataSet (); //Read xml to dataset and pass file path as parameter dataSet.ReadXml (filePath ); dataGridView.DataSource = dataSet.Tables [0]; share. Share a link to this answer. Copy link. 2ff7e9595c