Showing posts with label asp.net checkbox. Show all posts
Showing posts with label asp.net checkbox. Show all posts

Get selected items in checkboxlist asp.net

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iterate checkboxlist

When using checkbox list control in asp.net we need to find multiple selected items from Checkbox list. For example there is a Checkbox list with subject list and we need to show the items those are selected.

<html xmlns="http://www.w3.org/1999/xhtml"> 
<head id="Head1" runat="server"> 
<title></title> 
</head> 
<body> 
<form id="form1" runat="server"> 
<div> 
<asp:CheckBoxList ID="CheckBoxList1" runat="server"> 
<asp:ListItem Value="0">ASP.NET</asp:ListItem> 
<asp:ListItem Value="1">C#.NET</asp:ListItem> 
<asp:ListItem Value="2">VB.NET</asp:ListItem> 
<asp:ListItem Value="3">WCF</asp:ListItem> 
</asp:CheckBoxList> 
<br /> 
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Show Selected" /> 
<br /> 
<br /> 
<asp:Label ID="lblSelected" runat="server" Text=""></asp:Label> 
</div> 
</form> 
</body> 
</html>

Code that shows selected item from checkbox list [C#]


using System.Web.UI.WebControls;

namespace aspnetcontrol
{
    public partial class CheckboxList : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            lblSelected.Text = "";

            foreach (ListItem item in CheckBoxList1.Items)
            {
                if (item.Selected == true)
                {
                    lblSelected.Text += "Selected Subject/s: " + item.Text + "
";
                }
            } 

        }
    }
}

Get checkbox control in gridview C# - findcontrol

By  | In ,
get gridview checkbox asp.net c#
In this post we are going to see how to find checked checkboxes in gridview using c#. To find the checkboxes in gridview we have to iterate through the rows of gridview using gridviews rows collection. And then we can use findcontrol method of the row to get checkbox control. We need to pass Id of the checkbox to FindControl method.

Example to get checked checkboxes in gridview[C#]


<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" BorderWidth="1px"
CellPadding="3" BorderStyle="None" Font-Names="Arial">
<FooterStyle></FooterStyle>
<PagerStyle HorizontalAlign="Left"></PagerStyle>
<HeaderStyle Font-Bold="True"></HeaderStyle>
<Columns>
<asp:TemplateField HeaderText="Select">
<ItemTemplate>
<asp:CheckBox ID="CheckBoxSelect" runat="server" Enabled="true" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField HeaderText="Item No." DataField="ItemNo">
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle"></ItemStyle>
</asp:BoundField>
<asp:BoundField HeaderText="Item Name" DataField="ItemName">
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle"></ItemStyle>
</asp:BoundField>
</Columns>
</asp:GridView>

</div>
<asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
</form>
</body>
</html>

In code behind on click of button we will iterate through gridviews rows and find out checked checkboxes.

using System.Data;

namespace aspnetcontrol
{
    public partial class GridviewImages : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e) 
        {
            if (!IsPostBack)
            {
                GridView1.DataSource = BindImageData();
                GridView1.DataBind();
            }
        }

       public DataTable BindImageData()     
        {
           
            DataTable dt = new DataTable();
           
            dt.Columns.Add(new DataColumn("ItemNo", typeof(int)));
            dt.Columns.Add(new DataColumn("ItemName", typeof(string)));
            // Create the four records
            DataRow dr = dt.NewRow();
            dr["ItemNo"] = 1;
            dr["ItemName"] = "Tea";
           
            dt.Rows.Add(dr);
            dr = dt.NewRow();
            dr["ItemNo"] = 2;
            dr["ItemName"] = "Coffie";
            dt.Rows.Add(dr);
            dr = dt.NewRow();
            return dt;
        }

       protected void Button1_Click(object sender, EventArgs e)
       {
           // Iterate through the Products.Rows property
           foreach (GridViewRow row in GridView1.Rows)
           {
               CheckBox cb = (CheckBox)row.FindControl("CheckBoxSelect");

               if (cb != null && cb.Checked)
               {
                   //Do some stuff
                   
               }
           }
       }
    }

asp.net add checkbox in gridview

By  | In ,
add checkbox in gridview

In asp.net we need to add checkbox in gridview to select the row in gridview. To add checkbox in gridview we have to add ItemTemplate inside the asp:TemplateField. And inside ItemTemplate we can add checkbox control. We will how to add checkbox in gridview in asp.net using C#.

Example to add checkbox in gridview


<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" BorderWidth="1px"
CellPadding="3" BorderStyle="None" Font-Names="Arial">
<FooterStyle></FooterStyle>
<PagerStyle HorizontalAlign="Left"></PagerStyle>
<HeaderStyle Font-Bold="True"></HeaderStyle>
<Columns>
<asp:TemplateField HeaderText="Select">
<ItemTemplate>
<asp:CheckBox ID="CheckBoxPurchase" runat="server" Enabled="true" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField HeaderText="Item No." DataField="ItemNo">
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle"></ItemStyle>
</asp:BoundField>
<asp:BoundField HeaderText="Item Name" DataField="ItemName">
<ItemStyle HorizontalAlign="Center" VerticalAlign="Middle"></ItemStyle>
</asp:BoundField>
</Columns>
</asp:GridView>
</div>
</form>
</body>
</html>

Below code just binds the data to gridview.

using System.Data;

namespace aspnetcontrol
{
    public partial class GridviewImages : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e) 
        {
            GridView1.DataSource = BindImageData();
            GridView1.DataBind();
        }

       public DataTable BindImageData()     
        {
           
            DataTable dt = new DataTable();
           
            dt.Columns.Add(new DataColumn("ItemNo", typeof(int)));
            dt.Columns.Add(new DataColumn("ItemName", typeof(string)));
            // Create the four records
            DataRow dr = dt.NewRow();
            dr["ItemNo"] = 1;
            dr["ItemName"] = "Tea";
           
            dt.Rows.Add(dr);
            dr = dt.NewRow();
            dr["ItemNo"] = 2;
            dr["ItemName"] = "Coffie";
            dt.Rows.Add(dr);
            dr = dt.NewRow();
            return dt;
        }
    }
}