Items moving from one list to another

Question

Hi

I have 2 ListBoxes/DropDown . In one ListBox/DropDowm i will be listing all Departments . Between 2 Boxes there will be 2 arrows (Left & Right) . When user selects any Department from Left Box & select right arrow that Department should get moved in the Right box & vice-versa using C# .

Thanks

Satyapriya Nayak · Answer

Hi Jagjit, Here is your solution. For DropDownList below code Untitled Page onclick="btn_leftall_Click" /> onclick="btn_rightall_Click" /> using System; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { DropDownList1.Items.Add("Raj"); DropDownList1.Items.Add("Ravi"); DropDownList1.Items.Add("Rahul"); DropDownList1.Items.Add("Raju"); DropDownList1.Items.Add("Rohit"); DropDownList1.Items.Add("Rajesh"); } } protected void btn_left_Click(object sender, EventArgs e) { DropDownList1.Items.Add(DropDownList2.SelectedItem.Text); int i = 0; i = DropDownList2.SelectedIndex; DropDownList2.Items.RemoveAt(i); } protected void btn_right_Click(object sender, EventArgs e) { DropDownList2.Items.Add(DropDownList1.SelectedItem.Text); int i = 0; i = DropDownList1.SelectedIndex; DropDownList1.Items.RemoveAt(i); } protected void btn_leftall_Click(object sender, EventArgs e) { int j = 0; for (j = 0; j { DropDownList1.Items.Add(DropDownList2.Items[j]); } DropDownList2.Items.Clear(); } protected void btn_rightall_Click(object sender, EventArgs e) { int j = 0; for (j = 0; j { DropDownList2.Items.Add(DropDownList1.Items[j]); } DropDownList1.Items.Clear(); } } For Listbox below code Untitled Page using System; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { ListBox1.Items.Add("Raj"); ListBox1.Items.Add("Ravi"); ListBox1.Items.Add("Rahul"); ListBox1.Items.Add("Raju"); ListBox1.Items.Add("Rohit"); ListBox1.Items.Add("Rajesh"); } } protected void Button1_Click(object sender, EventArgs e) { ListBox1.Items.Add(ListBox2.SelectedItem.Text); int i = 0; i = ListBox2.SelectedIndex; ListBox2.Items.RemoveAt(i); } protected void Button2_Click(object sender, EventArgs e) { ListBox2.Items.Add(ListBox1.SelectedItem.Text); int i = 0; i = ListBox1.SelectedIndex; ListBox1.Items.RemoveAt(i); } protected void Button3_Click(object sender, EventArgs e) { int j = 0; for (j = 0; j { ListBox1.Items.Add(ListBox2.Items[j]); } ListBox2.Items.Clear(); } protected void Button4_Click(object sender, EventArgs e) { int j = 0; for (j = 0; j { ListBox2.Items.Add(ListBox1.Items[j]); } ListBox1.Items.Clear(); } } Thanks If this post helps you mark it as answer

Vulpes · Answer

The ASP.NET version of my first post would be: protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { string[] departments = { "A", "B", "C", "D", "E", "F" }; //or whatever foreach(string dept in departments) { LstLeft.Items.Add(dept); } } } protected void BtnRight_Click(object sender, EventArgs e) { if (LstLeft.SelectedIndex > -1) { LstRight.Items.Add(LstLeft.SelectedItem.Text); LstLeft.Items.RemoveAt(LstLeft.SelectedIndex); } } protected void BtnLeft_Click(object sender, EventArgs e) { if (LstRight.SelectedIndex > -1) { LstLeft.Items.Add(LstRight.SelectedItem.Text); LstRight.Items.RemoveAt(LstRight.SelectedIndex); } }

Vulpes · Answer

Assuming it's a windows forms application, something like this should work: private void Form1_Load(object sender, EventArgs e) { string[] departments = { "A", "B", "C", "D", "E", "F" }; // or whatever lstLeft.Items.AddRange(departments); } private void btnRight_Click(object sender, EventArgs e) { if (lstLeft.SelectedIndex > -1) { lstRight.Items.Add(lstLeft.SelectedItem); lstLeft.Items.RemoveAt(lstLeft.SelectedIndex); } } private void btnLeft_Click(object sender, EventArgs e) { if (lstRight.SelectedIndex > -1) { lstLeft.Items.Add(lstRight.SelectedItem); lstRight.Items.RemoveAt(lstRight.SelectedIndex); } }