how do i undo my deleted record in Listview??

Question

Hello I have listview in that i have to udno my deleted record ..anyone helpme.. Source Code:: S.No Name Designation MaxLength=20 > onitemcanceling=ListView1_ItemCanceling onitemediting=ListView1_ItemEditing onitemdatabound=ListView1_ItemDataBound onitemupdating=ListView1_ItemUpdating onitemdeleting=ListView1_ItemDeleting ItemPlaceholderID=itemplaceholder GroupPlaceholderID=groupplaceholder onitemcommand=ListView1_ItemCommand > ' Width=3% Height=22px> ' Width=165px Height=22px> ' Width=165px Height=22px> ' Visible=false Width=250px> Code Behind:: protected void Page_Load(object sender EventArgs e) { if (!IsPostBack) { DataTable dt = new DataTable(); dt.Columns.Add(Sno); dt.Columns.Add(Name); dt.Columns.Add(Designation); dt.Columns.Add(Status); ViewState[List] = dt; ListView1.DataSource = dt; ListView1.DataBind(); TextBox1.Text = (dt.Rows.Count + 1).ToString(); TextBox2.Focus(); } } protected void btnadd_Click(object sender EventArgs e) { bool IsRecordExist = false; DataTable dt = new DataTable(); dt = (DataTable)ViewState[List]; DataRow dr = dt.NewRow(); IsRecordExist = CheckRecorExist(); if (IsRecordExist == false) { dr[Sno] = (dt.Rows.Count + 1).ToString(); dr[Name] = TextBox2.Text; dr[Designation] = TextBox3.Text; dr[Status] = Saved; dt.Rows.Add(dr); ViewState[List] = ListView1.DataSource = dt; ListView1.DataBind(); RefreshHeader(); } else { dt = (DataTable)ViewState[List]; DataRow drUpdate = dt.Select(SNo= + TextBox1.Text).FirstOrDefault(); drUpdate[Name] = TextBox2.Text; drUpdate[Designation] = TextBox3.Text; drUpdate[Status] = ((Label)ListView1.Items[0].FindControl(lblstatus)).Text = Modified; dr[Status] = Modified; ViewState[List] = ListView1.DataSource = dt; ListView1.DataBind(); RefreshHeader(); } } private bool CheckRecorExist() { bool IsExistRecord = false; foreach (ListViewItem item in ListView1.Items) { if (((Label)ListView1.Items[item.DataItemIndex].FindControl(Sno)).Text == TextBox1.Text) { IsExistRecord = true; break; } } return IsExistRecord; } private void RefreshHeader() { DataTable dt = new DataTable(); dt = (DataTable)ViewState[List]; int Row = dt.Rows.Count + 1; TextBox1.Text = Row.ToString(); TextBox2.Text = ; TextBox3.Text = ; TextBox2.Focus(); } protected void ListView1_ItemCommand(object sender ListViewCommandEventArgs e) { } protected void ListView1_ItemEditing(object sender ListViewEditEventArgs e) { ListView1.EditIndex = e.NewEditIndex; DataTable dt = (DataTable)ViewState[List]; string EditNo = ((Label)ListView1.Items[e.NewEditIndex].FindControl(SNo)).Text; ((Label)ListView1.Items[e.NewEditIndex].FindControl(lblstatus)).Text = Saved; DataRow dr = dt.Select(SNo= + EditNo).FirstOrDefault(); dr[Status] = ((Label)ListView1.Items[0].FindControl(lblstatus)).Text; dr[Status] = Saved; ViewState[List] = ListView1.DataSource = dt; TextBox1.Text = ((Label)ListView1.Items[e.NewEditIndex].FindControl(SNo)).Text; TextBox2.Text = ((Label)ListView1.Items[e.NewEditIndex].FindControl(Name)).Text; TextBox3.Text = ((Label)ListView1.Items[e.NewEditIndex].FindControl(Designation)).Text; TextBox2.Focus(); } protected void ListView1_ItemCanceling(object sender ListViewCancelEventArgs e) { ListView1.EditIndex = -1; DataTable dt = (DataTable)ViewState[List]; ViewState[List] = dt; ListView1.DataSource = dt; ListView1.DataBind(); } protected void ListView1_ItemUpdating(object sender ListViewUpdateEventArgs e) { TextBox TextBox1 = ((TextBox)ListView1.Items[e.ItemIndex].FindControl(TextBox1)); TextBox TextBox2 = ((TextBox)ListView1.Items[e.ItemIndex].FindControl(TextBox2)); TextBox TextBox3 = ((TextBox)ListView1.Items[e.ItemIndex].FindControl(TextBox3)); ListView1.EditIndex = -1; DataTable dt = (DataTable)ViewState[List]; ViewState[List] = dt; ListView1.DataSource = dt; for (int i = 0; i { dt.Rows[e.ItemIndex][SNo] = TextBox1.Text; dt.Rows[e.ItemIndex][Name] = TextBox2.Text; dt.Rows[e.ItemIndex][Designation] = TextBox3.Text; } ListView1.DataBind(); } protected void ListView1_ItemDeleting(object sender ListViewDeleteEventArgs e) { ((Label)ListView1.Items[e.ItemIndex].FindControl(lblstatus)).Text = Deleted; ListViewItem item = this.ListView1.Items[e.ItemIndex]; string cusid = ((Label)ListView1.Items[e.ItemIndex].FindControl(SNo)).Text; ScriptManager.RegisterClientScriptBlock(this this.GetType() alertMessage alert('S.No:  + cusid +  Will be Deleted') true); DataTable dt = (DataTable)ViewState[List]; DataRow dr = dt.Select(SNo= + cusid).FirstOrDefault(); dr[Status] = ((Label)ListView1.Items[e.ItemIndex].FindControl(lblstatus)).Text; dr[Status] = Deleted; ViewState[List] = ListView1.DataSource = dt; ListView1.DataBind(); RefreshHeader(); TextBox2.Focus(); } protected void btncan_Click(object sender EventArgs e) { TextBox2.Text = ; TextBox3.Text = ; } protected void ListView1_ItemDataBound(object sender ListViewItemEventArgs e) { if (e.Item.ItemType == ListViewItemType.DataItem) { DataTable dt = (DataTable)ViewState[List]; DataRow dr = ((System.Data.DataRowView)e.Item.DataItem).Row; switch (dr[Status].ToString()) { case Deleted: { Add.Visible = true; Cancel.Visible = true; ((Button)e.Item.FindControl(Edit)).Visible = false; ((Button)e.Item.FindControl(Delete)).Visible = false; ((Button)e.Item.FindControl(Undo)).Visible = true; ((Label)e.Item.FindControl(SNo)).BackColor = Color.Red; ((Label)e.Item.FindControl(Name)).BackColor = Color.Red; ((Label)e.Item.FindControl(Designation)).BackColor = Color.Red; break; } case Saved: { Add.Visible = true; Cancel.Visible = true; ((Button)e.Item.FindControl(Edit)).Visible = true; ((Button)e.Item.FindControl(Delete)).Visible = true; break; } case Modified: { Add.Visible = true; Cancel.Visible = true; ((Button)e.Item.FindControl(Edit)).Visible = true; ((Button)e.Item.FindControl(Delete)).Visible = true; break; } default: { break; } } } }

Mukesh Kumar · Answer

Hi Here you need to show only required code which is creating an issue. thanks

Francis · Answer

Hope you want to Undo the deleted record. If a user deleted the record you provide an option for undo if the user wants to undo the record need to be display. Unfortunately there is no built in support for Listview control. But you can add it manually. I just want to highlight some points for this purpose: Since you are using datatable  in the datatable you can able to differentiate the deleted row using Rowstate. Actually in the Datatable if you delete the row it won't deleted that particular row's state is modified as Deleted. Try to use this property and achieve your goal. https://msdn.microsoft.com/en-us/library/ww3k31w0(v=vs.110).aspx Hope this helps!

Sreenish · Answer

am unable to get idea how to undo the deleted record...

Sujeet Suman · Answer

Sreenish where you are facing problem? Can you specify here please.