Filter GridView using multiple CheckBoxes in ASP.Net

Hi sambath,

Please take reference to the below code and correct your code.

HTML

<asp:Panel ID="pnlStatus" runat="server">
    <asp:CheckBox ID="chkPending" runat="server" Text="Pending" OnCheckedChanged="StatusChanged"
        AutoPostBack="true" />
    <asp:CheckBox ID="chkComplete" runat="server" Text="Complete" OnCheckedChanged="StatusChanged"
        AutoPostBack="true" />
</asp:Panel>
<br />
<br />
<asp:GridView ID="gvStatus" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="Name" HeaderText="Name" />
        <asp:BoundField DataField="Status" HeaderText="Status" />
    </Columns>
</asp:GridView>

Namespaces

C#

using System.Data;
using System.Configuration;
using System.Data.SqlClient;

VB.Net

Imports System.Data.SqlClient
Imports System.Data

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        this.BindGrid("SELECT * FROM UserStatus");
    }
}

private void BindGrid(string query)
{
    string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection con = new SqlConnection(constr))
    {
        using (SqlCommand cmd = new SqlCommand(query, con))
        {
            using (SqlDataAdapter da = new SqlDataAdapter(cmd))
            {
                DataTable dt = new DataTable();
                da.Fill(dt);
                gvStatus.DataSource = dt;
                gvStatus.DataBind();
            }
        }
    }
}

protected void StatusChanged(object sender, EventArgs e)
{
    string query = "SELECT * FROM UserStatus ";
    CheckBox chkPending = (CheckBox)pnlStatus.FindControl("chkPending");
    CheckBox chkComplete = (CheckBox)pnlStatus.FindControl("chkComplete");
    if (chkPending.Checked || chkComplete.Checked)
    {
        query += "WHERE Status IN (";
        if (chkPending.Checked)
        {
            query += "'no',''";
        }
        if (chkComplete.Checked)
        {
            query += "'','yes'";
        }
        query += ")";
    }
    BindGrid(query);
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Me.BindGrid("SELECT * FROM UserStatus")
    End If
End Sub

Private Sub BindGrid(ByVal query As String)
    Dim constr As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Using con As SqlConnection = New SqlConnection(constr)
        Using cmd As SqlCommand = New SqlCommand(query, con)
            Using da As SqlDataAdapter = New SqlDataAdapter(cmd)
                Dim dt As DataTable = New DataTable()
                da.Fill(dt)
                gvStatus.DataSource = dt
                gvStatus.DataBind()
            End Using
        End Using
    End Using
End Sub

Protected Sub StatusChanged(ByVal sender As Object, ByVal e As EventArgs)
    Dim query As String = "SELECT * FROM UserStatus "
    Dim chkPending As CheckBox = CType(pnlStatus.FindControl("chkPending"), CheckBox)
    Dim chkComplete As CheckBox = CType(pnlStatus.FindControl("chkComplete"), CheckBox)
    If chkPending.Checked OrElse chkComplete.Checked Then
        query += "WHERE Status IN ("
        If chkPending.Checked Then
            query += "'no',''"
        End If
        If chkComplete.Checked Then
            query += "'','yes'"
        End If
        query += ")"
    End If
    BindGrid(query)
End Sub

Screenshot