Download DataList checkbox checked file in zip using Ionic.zip dll in asp.net

//////////////////// HTML

 using Ionic.Zip; namespace

<asp:DataList ID="DL_FileManagement" runat="server" DataKeyField="FileNames" RepeatDirection="Horizontal" RepeatLayout="Flow" CssClass="row col-lg-12"

CellPadding="2" CellSpacing="5">

   <ItemStyle ForeColor="Black" />

         <ItemTemplate>

           <div class="col-lg-2 p-0">

               <asp:CheckBox runat="server" ID="Chk_TabtoDownload" Style="float: left; margin-top: 6px; margin-right: -8px;" CssClass="pull-right" Text="&nbsp;" />

                  </div>

                       </ItemTemplate>

    </asp:DataList>

button

<asp:LinkButton runat="server" ID="lbtn_FMDataBulk" OnClick="lbtn_FMDataBulk_OnClick">

                                                     <i class="glyphicon glyphicon-download btn-success" style="font-size:15px; padding:5px;"></i>

                                                                </asp:LinkButton>

//////////////////////////////.cs

protected void Download_Files_Zip(List<string> filenames, string FolderName)

    {

        try

        {

            string fullPath = ResolveUrl("~/" + FolderName + "/");

            string chkFile = Server.MapPath("~/" + FolderName + "/");

            using (ZipFile zip = new ZipFile())

            {

                zip.AlternateEncodingUsage = ZipOption.AsNecessary;

                zip.AddDirectoryByName("Files");

                for (int i = 0; i < filenames.Count; i++)

                {

                    string Fpaths = chkFile + Convert.ToString(filenames[i]);

                    FileInfo fi = new FileInfo(Fpaths);

                    if (fi.Exists)

                    {

                        string filePath = fullPath + Convert.ToString(filenames[i]);

                        zip.AddFile(filePath, "Files");

                    }

                }

                Response.Clear();

                Response.BufferOutput = false;

                string zipName = String.Format("Zip_{0}.zip", DateTime.Now.ToString("yyyyMMMddHHmmss"));

                Response.ContentType = "application/zip";

                Response.AddHeader("content-disposition", "attachment; filename=" + zipName);

                zip.Save(Response.OutputStream);

                Response.End();

            }

        }

        catch (Exception)

        {

        }

    }

    protected void lbtn_FMDataBulk_OnClick(object sender, EventArgs e)

    {

        try

        {

            int i = 0;

            string[] files = new string[] { };

            List<string> filesNames = new List<string>();

            foreach (DataListItem item in DL_FileManagement.Items)

            {

                if ((item.FindControl("Chk_TabtoDownload") as CheckBox).Checked)

                {

                    filesNames.Add((item.FindControl("lbl_FilesNames") as Label).Text);

                    i++;

                }

            }

            Download_Files_Zip(filesNames, "Document");

        }

        catch (Exception)

        {

        }

    }

Redirect web service error to the custom error page in asp.net using Globle.asax and web.config file

////////////////////////   web.config file

  <!--<customErrors mode="On" defaultRedirect="~/Error-page"> </customErrors>-->

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

<system.web>

    <webServices>

      <protocols>

        <remove name="Documentation"/>

      </protocols>

    </webServices>

   </system.web>

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

  <system.webServer>

<httpErrors errorMode="Custom" defaultResponseMode="Redirect">

      <remove statusCode="404" subStatusCode="-1" />

      <error statusCode="404" prefixLanguageFilePath="" path="~/Path/Error-page"

       responseMode="Redirect" />

      <remove statusCode="403" subStatusCode="-1" />

      <error statusCode="403" prefixLanguageFilePath="" path="~/Path/Error-page"

       responseMode="Redirect" />

      <remove statusCode="405" subStatusCode="-1" />

      <error statusCode="405" prefixLanguageFilePath="" path="~/Path/Error-page"

       responseMode="Redirect" />

    </httpErrors>

</system.webServer>

////////////////////////   web.config file

protected void Application_Error(object sender, EventArgs e)

    {

        Exception exception = Server.GetLastError();

        Response.Clear();

        HttpException httpException = exception as HttpException;

        if (httpException != null)

        {

            string action;

            switch (httpException.GetHttpCode())

            {

                case 404:

                    // page not found

                    action = "~/Error-page";

                    break;

                case 500:

                    // server error

                    action = "~/Error-page";

                    break;

                default:

                    action = "~/Error-page";

                    break;

            }

            // clear error on server

            Server.ClearError();

            Response.Redirect("~/Error-page");

        }

    }

Install windows service using command prompt

//////////////// Steps---------------


Step 1.  C:\Windows\system32>cd /

Step 2. C:\> cd \Windows\Microsoft.NET\Framework>cd v4.0.30319 (press Enter Key)

Step 3. C:\Windows\Microsoft.NET\Framework\v4.0.30319>

for uninstall

Step 4.  C:\Windows\Microsoft.NET\Framework\v4.0.30319>installutil.exe -u D:\FolderPath\WindowsService.exe

for install

Step 5.  C:\Windows\Microsoft.NET\Framework\v4.0.30319>installutil.exe -i D:\FolderPath\WindowsService.exe

                       

Increase font-size click on button using jquery

/////////// HTML

<html xmlns="http://www.w3.org/1999/xhtml">

<head id="Head1">

    <title>increase or decrease font size of website in asp.net</title>

    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js">

    </script>

    <script type="text/javascript">

        $(document).ready(function () {

            var divtxt = $('#ChDfontdiv');

            // Increase Font Size

            $('#incrsfont').click(function () {

                GetAllSize("p");

            });

            // Decrease Font Size

            $('#decrsfont').click(function () {

                GetAllSize("m");

            })

            function GetAllSize(siz) {

                $('#ChDfontdiv div, #ChDfontdiv span, #ChDfontdiv label, #ChDfontdiv .heading').each(function () {

                    if (siz == "p") {

                        debugger;

                        var curSize = $(this).css('fontSize');

                        var newSize = parseInt(curSize.replace("px", "")) + 1;

                        $(this).css("fontSize", newSize + "px");

                        if (newSize > 12) {

                            $('#decrsfont').removeAttr("disabled");

                        }

                        if (newSize >= 25) {

                            $('#incrsfont').attr("disabled", "disabled");

                        }

                    }

                    else if (siz == "m") {

                        var curSize = $(this).css('fontSize');

                        var newSize = parseInt(curSize.replace("px", "")) - 1;

                        $(this).css("fontSize", newSize + "px");

                        if (newSize <= 12) {

                            $('#decrsfont').attr("disabled", "disabled");

                        }

                        if (newSize < 25) {

                            $('#incrsfont').removeAttr("disabled");

                        }

                    }

                });

            }

        });

    </script>

    <style>

        body{ font-size:12px;}

    .heading{ font-size:18px; font-weight:bold;}

    </style>

</head>

<body>

  

    <div id="ChDfontdiv">

    <div class="heading">

    heading heading heading

    </div>

      <div>div div div div div</div>

        <span>span span span span span</span>

        <label>label label label label label</label>

    </div>

    <br />

    <input type="button" id="incrsfont" value=" + " />

    <input type="button" id="decrsfont" value=" - " />

  

</body>

</html>

Add / Insert Identity column to DataTable in asp.net C#

////////////////////

DataTable dt = new DataTable();

        //Add columns to DataTable.

        dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id"), new DataColumn("Name"), new DataColumn("Country") });

        //Set AutoIncrement True for the First Column.

        dt.Columns["Id"].AutoIncrement = true;

        //Set the Starting or Seed value.

        dt.Columns["Id"].AutoIncrementSeed = 1;

        //Set the Increment value.

        dt.Columns["Id"].AutoIncrementStep = 1;

        //Add rows to DataTable.

        dt.Rows.Add(null, "Raja", "India");

        dt.Rows.Add(null, "Ram", "US");

        dt.Rows.Add(null, "Mohan", "UK");

        dt.Rows.Add(null, "Ray", "Russia");

        dt.Rows.Add(null, "Jai", "China");