ASP.NET - how to swap value between two listview

Asked By msakt on 05-Jun-12 12:04 AM

how to swap value between two listview

DL M replied to msakt on 05-Jun-12 12:12 AM

Hi..

Good morning..

example here about swap value between two listview

private void MoveListViewItem(ref ListView lv,bool moveUp)
    {
    string cache;
    int selIdx;

    selIdx = lv.SelectedItems[0].Index;
    if(moveUp)
    {
      // ignore moveup of row(0)
      if(selIdx==0)
      return;

      // move the subitems for the previous row
      // to cache to make room for the selected row
      for(int i=0; i < lv.Items[selIdx].SubItems.Count; i++)
      {
      cache = lv.Items[selIdx - 1].SubItems[i].Text;
      lv.Items[selIdx - 1].SubItems[i].Text =
        lv.Items[selIdx].SubItems[i].Text;
      lv.Items[selIdx].SubItems[i].Text = cache;
      }
      lv.Items[selIdx-1].Selected=true;
      lv.Refresh();
      lv.Focus();
    }
    else
    {
      // ignore movedown of last item
      if(selIdx==lv.Items.Count-1)
      return;
      // move the subitems for the next row
      // to cache so we can move the selected row down
      for(int i = 0; i < lv.Items[selIdx].SubItems.Count; i++)
      {
      cache = lv.Items[selIdx + 1].SubItems[i].Text;
      lv.Items[selIdx + 1].SubItems[i].Text =
        lv.Items[selIdx].SubItems[i].Text;
      lv.Items[selIdx].SubItems[i].Text = cache;
      }
      lv.Items[selIdx+1].Selected=true;
      lv.Refresh();
      lv.Focus();
    }
    }

Jitendra Faye replied to msakt on 05-Jun-12 12:22 AM

Refer this article -

http://www.codeproject.com/Questions/356189/transfer-data-from-listview-to-another-listview

Here you will get code.

dotnet freak replied to msakt on 05-Jun-12 12:42 AM

Follow this example for this:
http://www.vbdotnetheaven.com/uploadfile/ahsanshakir/how-to-swap-two-rows-of-listview-in-upwarddownward-direction/

Neha Garg replied to msakt on 05-Jun-12 12:53 AM

Hi...

See the complete solution:

aspx Code:

<div>

<asp:ListView ID="ListView1" runat="server" OnSelectedIndexChanging="ListView1_SelectedIndexChanging">

<ItemTemplate>

<tr>

<td>

<asp:LinkButton ID="lnkSelect" Text="Select" CommandName="Select" runat="server" />

</td>

<td>

<%# Eval("test")%>

</td>

<br />

</tr>

</ItemTemplate>

<SelectedItemTemplate>

<tr style="background-color: #FFFF66; color: #808000;">

<td>

<asp:LinkButton ID="lnkSelect" Text="Select" CommandName="Select" runat="server"

ForeColor="Red" />

</td>

<td style="background-color: #FFFF66; color: #808000;">

<%# Eval("test")%>

</td>

<br />

</tr>

</SelectedItemTemplate>

</asp:ListView>

<br />

<asp:Button ID="Button6" runat="server" Text="Move" OnClick="Button1_Click" Style="height: 26px" />

<asp:Label ID="lblStatus" runat="server"></asp:Label>

<br />

<asp:ListView ID="ListView2" runat="server">

<ItemTemplate>

<tr style="background-color: #00FF00">

<td>

<%# Eval("test")%>

</td>

<br />

</tr>

</ItemTemplate>

</asp:ListView>

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

<asp:Button ID="Button7" runat="server" Text="Save" OnClick="Button2_Click" />

</div>

Code behind:

DataTable Datat = new DataTable();

DataTable Data2 = new DataTable();

protected void Button2_Click(object sender, EventArgs e)

{

if (TextBox1.Text == string.Empty)

{

lblStatus.Text = "Enter value ";

return;

}

if (ViewState["Datat"] == null)

{

DataColumn col = new DataColumn("test");

col.DataType = System.Type.GetType("System.String");

Datat.Columns.Add(col);

}

else

{

Datat = (DataTable)ViewState["Datat"];

}

DataRow dr = Datat.NewRow();

dr[0] = TextBox1.Text; ;

Datat.Rows.Add(dr);

ListView1.DataSource = Datat;

ListView1.DataBind();

ViewState.Add("Datat", Datat);

lblStatus.Text = "your Item saved ";

TextBox1.Text = string.Empty;

}

protected void ListView1_SelectedIndexChanging(object sender, ListViewSelectEventArgs e)

{

ListView1.SelectedIndex = e.NewSelectedIndex;

lblStatus.Text = "your Item selected ";

Datat = (DataTable)ViewState["Datat"];

ListView1.DataSource = Datat;

}

protected void Button1_Click(object sender, EventArgs e)

{

Datat = (DataTable)ViewState["Datat"];

if (ViewState["Data2"] == null)

{

DataColumn col = new DataColumn("test");

col.DataType = System.Type.GetType("System.String");

Data2.Columns.Add(col);

}

else

{

Data2 = (DataTable)ViewState["Data2"];

}

string ItemValue = Datat.Rows[ListView1.SelectedIndex][0].ToString();

Datat.Rows.RemoveAt(ListView1.SelectedIndex);

DataRow dr2 = Data2.NewRow();

dr2[0] = ItemValue;

Data2.Rows.Add(dr2);

ListView2.DataSource = Data2;

ListView2.DataBind();

ViewState.Add("Data2", Data2);

ListView1.DataSource = Datat;

ListView1.DataBind();

ViewState.Add("Datat", Datat);

lblStatus.Text = "your Item Moved ";

}

TSN ... replied to DL M on 05-Jun-12 01:04 AM

IF your Trying for Copying the selected items to another ListView you can try in this way.

private void ListView1_SelectedIndexChanged_UsingItems(oject sender, System.EventArgs e)

{

ListView.SelectedListViewItemCollection lstCoolection =

this.ListView1.SelectedItems;

foreach ( ListViewItem item in lstCoolection)

{

ListView2.Items.Add((ListViewItem)item.Clone());

}

// Output the price to TextBox1.

}

Chintan Vaghela replied to msakt on 05-Jun-12 01:08 AM

Hi Frndz,

Move list view selected Item to other list view then try to use following code

private static void MoveSelectedItems(ListView source, ListView target)

{

while (source.Items.Count > 0)

{

ListViewDataItem temp = source.Items[0];

source.Items.Remove(temp);

target.Items.Add(temp);

}

Hope this helpful!

Thanks