<asp:ListView ID="lvEmployee" runat="server"    
    onitemediting="lvEmployee_ItemEditing"
    onitemupdating="lvEmployee_ItemUpdating"
    onitemcanceling="lvEmployee_ItemCanceling"
    onitemdeleting="lvEmployee_ItemDeleting"
    InsertItemPosition="LastItem"
    oniteminserting="lvEmployee_ItemInserting">
<LayoutTemplate>
<table id="Table1" runat="server">
    <tr id="Tr1" runat="server">
<td id="Td1" runat="server">
    <table ID="itemPlaceholderContainer" runat="server" border="0" style="">
<tr id="Tr2" runat="server" style="">
<th id="Th1" runat="server">
        </th>
<th id="Th2" runat="server">
     EmpID</th>
<th id="Th3" runat="server">
     EmpName</th>
<th id="Th4" runat="server">
     Department</th>
<th id="Th5" runat="server">
     Age</th>
        <th id="Th6" runat="server">
     Address</th>
</tr>
<tr ID="itemPlaceholder" runat="server">
</tr>
     </table>
</td>
    </tr>
    <tr id="Tr3" runat="server">
<td id="Td2" runat="server" style="">
</td>
    </tr>
</table>
</LayoutTemplate>
<ItemTemplate>
        <tr style="">
    <td>
<asp:Button ID="DeleteButton" runat="server" CommandName="Delete"
    Text="Delete" />
        <asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="Edit" />
    </td>
    <td>
<asp:Label ID="EmpIDLabel" runat="server" Text='<%# Eval("EmpID") %>' />
            </td>
    <td>
<asp:Label ID="EmpNameLabel" runat="server" Text='<%# Eval("EmpName") %>' />
    </td>
    <td>
<asp:Label ID="DepartmentLabel" runat="server"
    Text='<%# Eval("Department") %>' />
    </td>
    <td>
<asp:Label ID="AgeLabel" runat="server" Text='<%# Eval("Age") %>' />
    </td>
    <td>
<asp:Label ID="AddressLabel" runat="server" Text='<%# Eval("Address") %>' />
    </td>
</tr>
</ItemTemplate>
<EditItemTemplate>
<tr style="">
    <td>
        <asp:Button ID="UpdateButton" runat="server" CommandName="Update"
    Text="Update" />
<asp:Button ID="CancelButton" runat="server" CommandName="Cancel"
    Text="Cancel" />
    </td>
    <td>
<asp:Label ID="EmpIDLabel1" runat="server" Text='<%# Eval("EmpID") %>' />
    </td>
    <td>
<asp:TextBox ID="EmpNameTextBox" runat="server" Text='<%# Bind("EmpName") %>' />
    </td>
    <td>
<asp:TextBox ID="DepartmentTextBox" runat="server"
    Text='<%# Bind("Department") %>' />
            </td>
    <td>
<asp:TextBox ID="AgeTextBox" runat="server" Text='<%# Bind("Age") %>' />
    </td>
    <td>
<asp:TextBox ID="AddressTextBox" runat="server" Text='<%# Bind("Address") %>' />
    </td>
</tr>
</EditItemTemplate>
<InsertItemTemplate>
<tr style="">
    <td>
<asp:Button ID="InsertButton" runat="server" CommandName="Insert"
    Text="Insert" />
<asp:Button ID="CancelButton" runat="server" CommandName="Cancel"
    Text="Clear" />
    </td>
    <td>
        &nbsp;</td>
    <td>
<asp:TextBox ID="EmpNameTextBox" runat="server" Text='<%# Bind("EmpName") %>' />
    </td>
    <td>
<asp:TextBox ID="DepartmentTextBox" runat="server"
    Text='<%# Bind("Department") %>' />
    </td>
    <td>
<asp:TextBox ID="AgeTextBox" runat="server" Text='<%# Bind("Age") %>' />
            </td>
    <td>
<asp:TextBox ID="AddressTextBox" runat="server" Text='<%# Bind("Address") %>' />
    </td>
</tr>
</InsertItemTemplate>
</asp:ListView>
2.      In the codebehind file, assign the DataTable or DataSet to the DataSource Property of the ListView control, like we do for a GridView control.
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
    lvEmployee.DataSource = GetEmployee("Select * from Employee");
    lvEmployee.DataBind();
        }
    }
    public DataTable GetEmployee(string query)
    {
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["DatabaseConnectionString"].ConnectionString);
        SqlDataAdapter ada = new SqlDataAdapter(query, con);
        DataTable dtEmp = new DataTable();
        ada.Fill(dtEmp);
        return dtEmp;
    }
3.      We can write our own code to edit, update, delete and insert in the corresponding events of the ListView control. Refer the below code.
protected void lvEmployee_ItemEditing(object sender, ListViewEditEventArgs e)
    {
        lvEmployee.EditIndex = e.NewEditIndex;
    lvEmployee.DataSource = GetEmployee("Select * from Employee");
    lvEmployee.DataBind();
    }
  protected void lvEmployee_ItemUpdating(object sender, ListViewUpdateEventArgs e)
    {
    string empid = "", name = "", dept = "", age = "", address = "";
    Label lbl = (lvEmployee.Items[e.ItemIndex].FindControl("EmpIDLabel1")) as Label;
    if (lbl != null)
empid = lbl.Text;
    TextBox txt = (lvEmployee.Items[e.ItemIndex].FindControl("EmpNameTextBox")) as TextBox;
    if (txt != null)
name = txt.Text;
    txt = (lvEmployee.Items[e.ItemIndex].FindControl("DepartmentTextBox")) as TextBox;
    if (txt != null)
dept = txt.Text;
    txt = (lvEmployee.Items[e.ItemIndex].FindControl("AgeTextBox")) as TextBox;
    if (txt != null)
age = txt.Text;
    txt = (lvEmployee.Items[e.ItemIndex].FindControl("AddressTextBox")) as TextBox;
    if (txt != null)
address = txt.Text;
    string UpdateQuery = "UPDATE [Employee] SET [EmpName] = '" + name + "', [Department] = '" + dept + "', [Age] = '" + age + "', [Address] = '" + address + "' WHERE [EmpID] = '" + empid + "'";
    SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["DatabaseConnectionString"].ConnectionString);
    con.Open();
    SqlCommand com = new SqlCommand(UpdateQuery, con);
    com.ExecuteNonQuery();
    con.Close();
    lvEmployee.EditIndex = -1;       
    lvEmployee.DataSource = GetEmployee("Select * from Employee");
    lvEmployee.DataBind();
    }
    protected void lvEmployee_ItemCanceling(object sender, ListViewCancelEventArgs e)
    {
        lvEmployee.EditIndex = -1;
    lvEmployee.DataSource = GetEmployee("Select * from Employee");
    lvEmployee.DataBind();
    }
    protected void lvEmployee_ItemDeleting(object sender, ListViewDeleteEventArgs e)
    {
        string empid = "";
        Label lbl = (lvEmployee.Items[e.ItemIndex].FindControl("EmpIDLabel")) as Label;
        if (lbl != null)
    empid = lbl.Text;
        string DeleteQuery = "Delete from Employee WHERE [EmpID] = '" + empid + "'";
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["DatabaseConnectionString"].ConnectionString);
        con.Open();
        SqlCommand com = new SqlCommand(DeleteQuery, con);
        com.ExecuteNonQuery();
        con.Close();
        lvEmployee.EditIndex = -1;
        lvEmployee.DataSource = GetEmployee("Select * from Employee");
        lvEmployee.DataBind();
    }
protected void lvEmployee_ItemInserting(object sender, ListViewInsertEventArgs e)
    {
        string name = "", dept = "", age = "", address = "";
        TextBox txt = (e.Item.FindControl("EmpNameTextBox")) as TextBox;
        if (txt != null)
    name = txt.Text;
        txt = (e.Item.FindControl("DepartmentTextBox")) as TextBox;
        if (txt != null)
    dept = txt.Text;
        txt = (e.Item.FindControl("AgeTextBox")) as TextBox;
        if (txt != null)
    age = txt.Text;
        txt = (e.Item.FindControl("AddressTextBox")) as TextBox;
        if (txt != null)
    address = txt.Text;
        string INSERTQuery = "INSERT INTO [Employee] (EmpName,Department,Age,Address) VALUES ('" + name + "','" + dept + "','" + age + "','" + address + "')";
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["DatabaseConnectionString"].ConnectionString);
        con.Open();
        SqlCommand com = new SqlCommand(INSERTQuery, con);
        com.ExecuteNonQuery();
        con.Close();
        lvEmployee.EditIndex = -1;  
        lvEmployee.DataSource = GetEmployee("Select * from Employee");
        lvEmployee.DataBind();
    }