You must have to use Gmail ID as From Email ID.

USE: using System.Net.Mail; // Namespace

OnSendMail Button Click Event :

try
{
SmtpClient obj = new SmtpClient(“smtp.gmail.com”);
obj.Credentials = new System.Net.NetworkCredential(“[email protected]”, “password”);
obj.Port = 587;
obj.Host = “smtp.gmail.com”;
obj.EnableSsl = true;

MailMessage message = new MailMessage(“[email protected]”,”[email protected]”);
message.Subject = txtSUB.Text; // subject textbox’s text
message.Body = txtMSG.Text; // Message textbox’s text
obj.Send(message);
Response.Write(“Mail Successfully send”);
}
catch (SmtpException ex)
{
Response.Write(ex.Message.ToString());
}

<script language=”javascript” type=”text/javascript”>
function chkFile()
{
var fextension = document.getElementById(“<%=FileUpload1.ClientID %>”).value;

var exten = fextension.split(“.”);
var len=exten.length;
//alert(exten.length);

if(exten[len-1]==”doc” || exten[len-1]==”docx”)
{
alert(“File upload successfully”);
return true;
}
else
{
alert(“Please select doc file”);
return false;
}
}
</script>

Create Folder/Directory and Check Existing or not

Here Session[“user”] is a name which will be created…. ‘upload’ is a floder/Director that already created.

if(Directory.Exists(Server.MapPath(“upload”) + “/” + Session[“user”].ToString()))
{
}
else
{
System.IO.Directory.CreateDirectory(Server.MapPath(“upload”) + “/” + Session[“user”].ToString());
}

First Time Page Load Gridview Shown as below

.aspx Page Coding

<div>
<asp:GridView ID=”GridView1″ runat=”server” AutoGenerateColumns=”False” ShowFooter=”True” >
<Columns>
<asp:TemplateField HeaderText=”Rollno”>
<ItemTemplate>
<asp:Label ID=”lblRno” runat=”Server” Text=””></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText=”Name”>
<ItemTemplate>
<asp:Label ID=”lblName” runat=”server” Text='<%# Eval(“name”) %>’></asp:Label>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID=”txtName” runat=”server” Text=””></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText=”City”>
<ItemTemplate>
<asp:Label ID=”lblCity” runat=”server” Text='<%# Eval(“city”) %>’></asp:Label>
</ItemTemplate>
<FooterTemplate>
<asp:TextBox ID=”txtCity” runat=”server” Text=””></asp:TextBox>
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
<asp:Button ID=”btnAdd” runat=”server” Text=”ADD” OnClick=”btnAdd_Click” />
</HeaderTemplate>
</asp:TemplateField>
</Columns>
<EmptyDataTemplate>
No Records
</EmptyDataTemplate>
</asp:GridView>
<asp:Button ID=”Button1″ runat=”server” OnClick=”Button1_Click” Style=”z-index: 100;
left: 16px; position: absolute; top: 192px” Text=”Insert Total Records from Grdiview” />
</div>

.aspx.cs Coding

DataTable dt = new DataTable();
DataColumn dc;
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
Session[“cart”] = null;
MakeCart();
BindGrid();
}
}

//Define columns of DataTable
public void MakeCart()
{
dc = new DataColumn();
dc.ColumnName = “rollno”;
dc.DataType = typeof(int);
dt.Columns.Add(dc);

dc = new DataColumn();
dc.ColumnName = “name”;
dc.DataType = typeof(string);
dt.Columns.Add(dc);

dc = new DataColumn();
dc.ColumnName = “city”;
dc.DataType = typeof(string);
dt.Columns.Add(dc);

}

//Bind Records into Gridview
public void BindGrid()
{
if (dt.Rows.Count == 0)
{
DataRow dr = dt.NewRow();

dr[“name”] = “No Record”;
dr[“city”] = “No Record”;
dt.Rows.Add(dr);
}
GridView1.DataSource = dt;
GridView1.DataBind();
}
protected void btnAdd_Click(object sender, EventArgs e)
{
if (Session[“cart”] == null)
{
MakeCart();
DataRow dr = dt.NewRow();
dr[“name”] = ((TextBox)GridView1.FooterRow.FindControl(“txtName”)).Text;
dr[“city”] = ((TextBox)GridView1.FooterRow.FindControl(“txtCity”)).Text;
dt.Rows.Add(dr);
Session[“cart”] = dt;
BindGrid();
}
else
{
dt = (DataTable)Session[“cart”];
DataRow dr = dt.NewRow();
dr[“name”] = ((TextBox)GridView1.FooterRow.FindControl(“txtName”)).Text;
dr[“city”] = ((TextBox)GridView1.FooterRow.FindControl(“txtCity”)).Text;
dt.Rows.Add(dr);
Session[“cart”] = dt;
BindGrid();
}
}

//Insert All Record from Gridview to DataSource  Sqlserver table.
protected void Button1_Click(object sender, EventArgs e)
{
dt = (DataTable)Session[“cart”];
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings[“TESTConnectionString”].ToString());
conn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = “insTy”;
for (int i=0; i <dt.Rows.Count; i++)
{
cmd.Parameters.AddWithValue(“@nm”, dt.Rows[i][“name”]);
cmd.Parameters.AddWithValue(“@ct”, dt.Rows[i][“city”]);
cmd.ExecuteNonQuery();
cmd.Parameters.Clear();
}
}

–JavaScript–

<script language=”javascript” type=”text/javascript”>

//user for select all checkbox
function SelectAllCheckboxes(spanChk){

// Added as ASPX uses SPAN for checkbox

var oItem = spanChk.children;
var theBox= (spanChk.type==”checkbox”) ?
spanChk : spanChk.children.item[0];
xState=theBox.checked;
elm=theBox.form.elements;

for(i=0;i<elm.length;i++)
if(elm[i].type==”checkbox” &&
elm[i].id!=theBox.id)
{
//elm[i].click();

if(elm[i].checked!=xState)
elm[i].click();
//elm[i].checked=xState;

}
}

//User for check any checkbox is selected or not and delete confirm message
function checkDelete(spanChk)
{
var chks=document.getElementsByTagName(‘input’);
var hasChecked = false;
for (var i = 0; i < chks.length; i++)
{
if (chks[i].checked)
{
hasChecked = true;
break;
}
}
if (hasChecked == false)
{
alert(“Please select at least one checkbox..!”);
return false;
}
else
{
if(confirm(“r u sure delete records?”))
{
return true;
}
else
{
return false;
}
}
}
</script>

–GridView .aspx page–

<asp:GridView ID=”GridView1″ runat=”server” AutoGenerateColumns=”False” OnRowDeleting=”GridView1_RowDeleting” ShowFooter=”True”>
<Columns>
<asp:TemplateField HeaderText=”Select”>
<HeaderTemplate>
<input id=”chkAll” type=”checkbox” runat=”Server” onclick=”javascript:SelectAllCheckboxes(this);” />
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID=”checkbox1″ runat=”Server” />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText=”Rollno”>
<ItemTemplate>
<asp:Label ID=”lblRollno” runat=”server” Text='<%# Eval(“rollno”) %>’></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText=”Name”>
<ItemTemplate>
<asp:Label ID=”lblName” runat=”server” Text='<%# Eval(“name”) %>’></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText=”City”>
<ItemTemplate>
<asp:Label ID=”lblCity” runat=”server” Text='<%# Eval(“city”) %>’></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID=”lbnDelete” CommandName=”Delete” runat=”server” Text=”Delete”
OnClientClick=”javascript:return checkDelete(this);”></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<FooterTemplate>
<asp:Button ID=”btnSubmit” runat=”server” Text=”Delete Selected” OnClick=”btnSubmit_Click”
OnClientClick=”javascript:return checkDelete(this);”  />
</FooterTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>

—aspx.cs page—

Single Record Delete Coding From Gridview

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
Label rno = (Label)GridView1.Rows[e.RowIndex].FindControl(“lblRollno”);
int no = Convert.ToInt32(rno.Text);

string str = “delete from tybca where rollno=” + no;
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings[“TESTConnectionString”].ToString());
conn.Open();
SqlCommand cmd = new SqlCommand(str, conn);
cmd.ExecuteNonQuery();
BindGrid();
}

Multiple Selected Checkbox Record Deleteing Coding

protected void btnSubmit_Click(object sender, EventArgs e)
{
ArrayList chkList = new ArrayList();
Label rollno;
int rno;

//Find Multiple checkbox was checked

for(int row=0; row<GridView1.Rows.Count;row++)
{
CheckBox c = (CheckBox)GridView1.Rows[row].Cells[0].FindControl(“CheckBox1”);
if (c.Checked != null)
{
if (c.Checked)
{
rollno = (Label) GridView1.Rows[row].Cells[1].FindControl(“lblRollno”);
rno = Convert.ToInt32(rollno.Text);
chkList.Add(rno);
}
}
}

//Delete Multiple Records
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings[“TESTConnectionString”].ToString());
conn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
string strSql;
foreach (int i in chkList)
{
//Response.Write(i);
strSql = “Delete from tybca where rollno=” + i;
cmd.CommandType = CommandType.Text;
cmd.CommandText = strSql;
cmd.ExecuteNonQuery();
}
BindGrid(); //this function bind gridview with records from datasource
}