Introduction: In this post I will explain you how to bind,
edit, delete and update the Detailsview data control in Asp.net.
Description:
I have
created a table name STUDENT_DETAIL.
STUDENT_ID
|
int
|
STUDENT_NAME
|
varchar(50)
|
STUDENT_ADDRESS
|
varchar(50)
|
STUDENT_CLASS
|
varchar(50)
|
STUDENT_ID is primary key.
Now open the Visual Studio>Go to File>New>Website.
Add the Connectionstring in web.config file of website.
<configuration>
<connectionStrings>
<add name="connection" connectionString="Data Source=SYS-1F78031ED0A;Initial
Catalog=TestBlog;Integrated Security=True"/>
</connectionStrings>
<system.web>
<compilation debug="true" targetFramework="4.0" />
</system.web>
</configuration>
After that add new web form to website, drag and drop the
Detailsview Data control from Toolbox.
<asp:DetailsView ID="studentdetailview"
runat="server"
CellPadding="4"
Height="50px" Width="400px" AutoGenerateRows="False" DataKeyNames="STUDENT_ID"
AllowPaging="True"
onpageindexchanging="studentdetailview_PageIndexChanging"
onitemupdating="studentdetailview_ItemUpdating"
onmodechanging="studentdetailview_ModeChanging"
onitemdeleting="studentdetailview_ItemDeleting">
<FieldHeaderStyle BackColor="#E9ECF1" Font-Bold="True" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<CommandRowStyle BackColor="#E2DED6" Font-Bold="True" />
<RowStyle BackColor="#e8d5f1" ForeColor="#333333" />
<FieldHeaderStyle BackColor="#E9ECF1" Font-Bold="True" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<Fields>
<asp:TemplateField HeaderText="Student Name">
<EditItemTemplate>
<asp:TextBox ID="txtstudentname" runat="server" Text='<%# Eval("STUDENT_NAME") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblstudentname" runat="server" Text='<%# Eval("STUDENT_NAME") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Student Address">
<EditItemTemplate>
<asp:TextBox ID="txtstudentaddress" runat="server"
Text='<%# Eval("STUDENT_ADDRESS") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblstudentaddress" runat="server"
Text='<%# Eval("STUDENT_ADDRESS") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Student Class">
<EditItemTemplate>
<asp:TextBox ID="txtstudentclass" runat="server" Text='<%# Eval("STUDENT_CLASS") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblstudentclass" runat="server" Text='<%# Eval("STUDENT_CLASS") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Editing">
<EditItemTemplate>
<asp:LinkButton ID="LinkButton6"
runat="server"
CommandName="update">Update</asp:LinkButton>
<asp:LinkButton ID="LinkButton7"
runat="server"
CommandName="cancel">Cacel</asp:LinkButton>
</EditItemTemplate>
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CommandName="edit">Edit</asp:LinkButton>
<asp:LinkButton ID="LinkButton2"
runat="server"
CommandName="delete">Delete</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Fields>
</asp:DetailsView>
After that go to .aspx.cs
page and add namespace.
using
System.Data;
using
System.Data.SqlClient;
using
System.Configuration;
Now write code to bind Detailsview and its properties.
SqlConnection con
= new SqlConnection(ConfigurationManager.ConnectionStrings["connection"].ToString());
protected void Page_Load(object
sender, EventArgs e)
{
if
(con.State == ConnectionState.Closed)
{
con.Open();
}
if
(!IsPostBack)
{
Binddetailsview();
}
}
private void Binddetailsview()
{
try
{
SqlDataAdapter
adp = new SqlDataAdapter("Select * from STUDENT_DETAIL", con);
DataTable
dt = new DataTable();
adp.Fill(dt);
if
(dt.Rows.Count > 0)
{
studentdetailview.DataSource =
dt;
studentdetailview.DataBind();
}
else
{
dt.Rows.Add(dt.NewRow());
studentdetailview.DataSource =
dt;
studentdetailview.DataBind();
int
columncount = studentdetailview.Rows[0].Cells.Count;
studentdetailview.Rows[0].Cells.Clear();
studentdetailview.Rows[0].Cells.Add(new TableCell());
studentdetailview.Rows[0].Cells[0].ColumnSpan
= columncount;
studentdetailview.Rows[0].Cells[0].Text = "No
Records Available";
}
}
catch (Exception ex)
{
}
}
protected void studentdetailview_PageIndexChanging(object sender, DetailsViewPageEventArgs
e)
{
studentdetailview.PageIndex =
e.NewPageIndex;
Binddetailsview();
}
protected void studentdetailview_ItemUpdating(object sender, DetailsViewUpdateEventArgs
e)
{
try
{
//int
STUDENT_ID = Convert.ToInt32(studentdetailview.DataKey).ToString());
DataKey
key = studentdetailview.DataKey;
TextBox
txtname = (TextBox)studentdetailview.Rows[1].FindControl("txtstudentname");
TextBox
txtaddress = (TextBox)studentdetailview.Rows[2].FindControl("txtstudentaddress");
TextBox
txtclass = (TextBox)studentdetailview.Rows[3].FindControl("txtstudentclass");
string
update = "Update STUDENT_DETAIL set
STUDENT_NAME='" + txtname.Text.Trim() + "',STUDENT_ADDRESS='"
+ txtaddress.Text.Trim() + "',STUDENT_CLASS='"+txtclass.Text.Trim()+"' where STUDENT_ID ="+key.Value.ToString();
SqlCommand
cmd = new SqlCommand(update,
con);
cmd.ExecuteNonQuery();
studentdetailview.ChangeMode(DetailsViewMode.ReadOnly);
Binddetailsview();
}
catch (Exception ex)
{
}
}
protected void studentdetailview_ModeChanging(object sender, DetailsViewModeEventArgs
e)
{
studentdetailview.ChangeMode(e.NewMode);
Binddetailsview();
}
protected void studentdetailview_ItemDeleting(object sender, DetailsViewDeleteEventArgs
e)
{
try
{
DataKey
key = studentdetailview.DataKey;
string
Delete = "Delete From STUDENT_DETAIL where
STUDENT_ID=" + key.Value.ToString();
SqlCommand
cmd = new SqlCommand(Delete,
con);
cmd.ExecuteNonQuery();
studentdetailview.ChangeMode(DetailsViewMode.ReadOnly);
Binddetailsview();
}
catch (Exception ex)
{
}
}
In VB:
Go to .aspx.vb page and add namespace.
Imports
System.Data
Imports
System.Data.SqlClient
Imports
System.Configuration
Now write code to bind Detailsview and its properties.
Private con
As New SqlConnection(ConfigurationManager.ConnectionStrings("connection").ToString())
Protected Sub Page_Load(ByVal
sender As Object,
ByVal e As
System.EventArgs) Handles
Me.Load
If
con.State = ConnectionState.Closed Then
con.Open()
End If
If Not IsPostBack Then
Binddetailsview()
End If
End Sub
Private Sub Binddetailsview()
Try
Dim
adp As New SqlDataAdapter("Select
* from STUDENT_DETAIL", con)
Dim
dt As New DataTable()
adp.Fill(dt)
If
dt.Rows.Count > 0 Then
studentdetailview.DataSource =
dt
studentdetailview.DataBind()
Else
dt.Rows.Add(dt.NewRow())
studentdetailview.DataSource =
dt
studentdetailview.DataBind()
Dim
columncount As Integer
= studentdetailview.Rows(0).Cells.Count
studentdetailview.Rows(0).Cells.Clear()
studentdetailview.Rows(0).Cells.Add(New TableCell())
studentdetailview.Rows(0).Cells(0).ColumnSpan = columncount
studentdetailview.Rows(0).Cells(0).Text = "No
Records Available"
End
If
Catch
ex As Exception
End Try
End Sub
Protected Sub studentdetailview_PageIndexChanging(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DetailsViewPageEventArgs)
Handles studentdetailview.PageIndexChanging
studentdetailview.PageIndex =
e.NewPageIndex
Binddetailsview()
End Sub
Protected Sub studentdetailview_ItemUpdating(ByVal sender As Object, ByVal e As DetailsViewUpdateEventArgs)
Try
'int
STUDENT_ID = Convert.ToInt32(studentdetailview.DataKey).ToString());
Dim
key As DataKey
= studentdetailview.DataKey
Dim
txtname As TextBox
= DirectCast(studentdetailview.Rows(1).FindControl("txtstudentname"), TextBox)
Dim
txtaddress As TextBox
= DirectCast(studentdetailview.Rows(2).FindControl("txtstudentaddress"), TextBox)
Dim
txtclass As TextBox
= DirectCast(studentdetailview.Rows(3).FindControl("txtstudentclass"), TextBox)
Dim
update As String
= "Update STUDENT_DETAIL set
STUDENT_NAME='" & txtname.Text.Trim() & "',STUDENT_ADDRESS='" &
txtaddress.Text.Trim() & "',STUDENT_CLASS='"
& txtclass.Text.Trim() & "' where
STUDENT_ID =" & key.Value.ToString()
Dim
cmd As New SqlCommand(update, con)
cmd.ExecuteNonQuery()
studentdetailview.ChangeMode(DetailsViewMode.[ReadOnly])
Binddetailsview()
Catch
ex As Exception
End Try
End Sub
Protected Sub studentdetailview_ModeChanging(ByVal sender As Object, ByVal e As DetailsViewModeEventArgs)
studentdetailview.ChangeMode(e.NewMode)
Binddetailsview()
End Sub
Protected Sub studentdetailview_ItemDeleting(ByVal sender As Object, ByVal e As DetailsViewDeleteEventArgs)
Try
Dim
key As DataKey
= studentdetailview.DataKey
Dim
Delete As String
= "Delete From STUDENT_DETAIL where
STUDENT_ID=" & key.Value.ToString()
Dim
cmd As New SqlCommand(Delete, con)
cmd.ExecuteNonQuery()
studentdetailview.ChangeMode(DetailsViewMode.[ReadOnly])
Binddetailsview()
Catch
ex As Exception
End Try
End Sub
Debug the Application and check the result.
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