Post Comments web page in ASP.Net using C#

Recently I have developed a web application automation application in which I have added a functionality for the user to post their comments, experience and questions for the admin.

Thought to share this approach with all of you.

So here is my approach what I have done.

1. An aspx page with name URComments.aspx.

2. we will use XML file to store all the comments posted by the users.

3. Used GridView to show all the comments posted by the users.

4. On page load and/or on post button click we will call a funtion to read all the comments

posted till now by the user and show that in to GridView.

5. Below controls we will on design view of URComments.aspx.

a. Text box to get the Emailid from the user.

b. Text box for the user to entered Comments and/or suggestion.

c. Button to submit comments.

d. GridView to show all the comments posted till that time.

The web page would look something like this:

Fig 1. Web Page with Post Comments Feature

6. The XML file format would be something as below. This XML file we will use to store all the comments provided by the user. B d way you can customize this as per your requirement.

fig 2. XMl File to store Comments posted by User

Page Load :

public static string xmlPath =ConfigurationSettings.AppSettings[“xmlFilePath“].ToString();

//on page load redirect the user to the specific url and then show all the comments

//posted //till //now

protected void Page_Load(object sender, EventArgs e)


if (!IsPostBack)





Showing Post in Web Page:

//Display the Post on webPage

public bool showThePostOnWebPage()


bool result = false;



DataSet dsForWebPage = readXMFile();

GridViewPost.DataSource = dsForWebPage.Tables[0];


result = true;


catch (Exception ex)



return result ;


Reading the XML file for the comments posted till now:

//Read the xml File

public DataSet readXMFile()


DataSet ds = new DataSet();

System.IO.FileStream fsReadXml = null;



//Read an XML file to generate serial number

fsReadXml = new System.IO.FileStream(xmlPath, System.IO.FileMode.Open);

//Declare a dataset to hold all the XML value

//Read the value from XML reader to the dataset



catch (Exception ex)


ds = null;






return ds;


On Button click (when user tried to submit the post):

protected void ButtonPost_Click(object sender, EventArgs e)


FileStream fsxml = null;

FileStream fs = null;



//check that the comments textbox is not empty

if (TextBoxComments.Text != null && TextBoxComments.Text != string.Empty )


//Read an xml file to get all the post commented till now

DataSet dsSet = readXMFile();

if (dsSet != null)


//make sure that table exist

int totalRowCount = dsSet.Tables[0].Rows.Count;

string strSerialNumber = null;

string getTheNumber = null;

if (totalRowCount <= 0) { getTheNumber = "1"; } else


//get the number

strSerialNumber = dsSet.Tables[0].Rows[totalRowCount – 1][4].ToString();

getTheNumber = strSerialNumber.Remove(0, 3);


Int32 currentSerialNumber = Convert.ToInt32(getTheNumber);

Int32 nextSerilaNumber = currentSerialNumber + 1;

string strSerialNumberToadd = “CFG” + nextSerilaNumber.ToString();

fs = new FileStream(xmlPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);

XmlDocument xmldoc = new XmlDocument();


// New XML Element Created

XmlElement newcatalogentry = xmldoc.CreateElement(“CFGPost”);

// New Attribute Created

XmlAttribute newcatalogattr = xmldoc.CreateAttribute(“ID”);

// Value given for the new attribute

newcatalogattr.Value = strSerialNumberToadd;

// Attach the attribute to the XML element


// First Element – Comments

XmlElement firstelement = xmldoc.CreateElement(“Comments“);

// Value given for the first element

firstelement.InnerText = TextBoxComments.Text.ToString();

// Append the newly created element as a child element


// Second Element – Date

XmlElement secondelement = xmldoc.CreateElement(“Date”);

// Value given for the second element

secondelement.InnerText = DateTime.Now.ToString();

// Append the newly created element as a child element


// Third Element – EmailID

XmlElement thridelement = xmldoc.CreateElement(“EmailId”);

// Value given for the third element

thridelement.InnerText = TextBoxEmailId.Text;

// Append the newly created element as a child element


// Fourth Element – UserName

XmlElement fourthelement = xmldoc.CreateElement(“UserName”);

// Value given for the fourth element

fourthelement.InnerText = hostName.ToString();

// Append the newly created element as a child element


// New XML element inserted into the document



// An instance of FileStream class created

// The first parameter is the path to the XML file

fsxml = new FileStream(xmlPath, FileMode.Truncate,



// XML Document Saved



//Clean the text box area

TextBoxEmailId.Text = string.Empty;

TextBoxComments.Text = string.Empty;

bool flag = showThePostOnWebPage();

RegisterClientScriptBlock(“js”, “window.onload = function(){alert(‘Thank you very much for your Post.’)}





//show the message to the user that currently we are facing some issue

RegisterClientScriptBlock(“js”, “window.onload = function(){alert(‘Currently we are facing some technical issue,Please try after some time.’)}




//if it is empty then show the message to user



RegisterClientScriptBlock(“js”, “window.onload = function(){alert(‘Please Provide Comments before posting.’)}




catch (Exception ex)




Method whenever user clicked on Pagination of Grid View

//fire this even whenever user clicked on pagination at gridView

protected void GridViewPost_PageIndexChanging(object sender, GridViewPageEventArgs e)




GridViewPost.PageIndex = e.NewPageIndex;



catch (Exception ex)




Now you are ready with the Post Comments project.

You can integrate this with your web application to provide the user an option to share their suggestion/comments and issues with others.

Hope you would get benefited form this.

Feel free to provide your comments.


Thank You,

Md. Jawed


4 thoughts on “Post Comments web page in ASP.Net using C#

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