datagridview header filter

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I've been trying to make my datagridview filter by using a drop down in the header. I found a post on this site that had a solution Here, but it required me to have the ajax control toolkit which I am not permitted to download on the company computer. Are there any other solutions to this problem?

Please note that I am not a strong programmer yet so please be detailed in your replies.

Please also note that the gridview datasource is from a different server than the code.

Thanks in advance,
Sean8084

Posted 8-Sep-11 7:43am

Sean8084

Updated 8-Sep-11 10:34am

v3

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2 solutions

Solution 2

DataGridView Filter Popup[^]
DataGrid with built-in filter functionality[^]
Datagridview with filtering capability[^]

Posted 8-Sep-11 21:59pm

MaulikDusara

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Ganesan Senthilvel · Accepted Answer · 2011-09-08T17:16:00

Sean, we need to simulate the functionality ajax control toolkit in ASP .NET

Herez the sample code with EmployeeID and Name.

XML

<body>
    <form id="form1" runat="server">
    <div>
      <table style="width: 640px" border="0" cellpadding="0" cellspacing="6" class="GridviewTable">
        <tr >
            <td style="width: 120px">
                Employee ID
            </td>
            <td style="width: 120px">
                Employee Name
            </td>
         </tr>
          <tr >
                <td style="width: 120px;">
                    <asp:TextBox ID="txtEmpId" runat="server" Width="75px"></asp:TextBox>
                    <asp:Button ID="btnEmpId" runat="server" Text="IDFilter" onclick="btnIdClick" />
                </td>
                <td style="width: 120px;">
                    <asp:TextBox ID="txtEmpName" runat="server" Width="75px"></asp:TextBox>
                    <asp:Button ID="btnEmpName" runat="server" Text="NameFilter" onclick="btnNameClick" />
                </td>
            </tr>
            <tr>
                <td colspan="2">
                    <asp:GridView ID="gvEmp" runat="server" AutoGenerateColumns="False" Width="640px" ShowHeader="False" >
                        <Columns>
                            <asp:BoundField DataField="EmpId" ItemStyle-Width="120px" >
                            <ItemStyle Width="120px"></ItemStyle>
                            </asp:BoundField>
                            <asp:BoundField DataField="EmpName" ItemStyle-Width="120px" >
                            <ItemStyle Width="120px"></ItemStyle>
                            </asp:BoundField>
                        </Columns>
                    </asp:GridView>
                </td>
            </tr>
        </table>
    </div>
    </form>
</body>

In code behind System.Data.DataTable plays the major role. Generate the local data table and change the result set during filter button clicked event.

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack)
    {
        EmpTable = new EmpTable();
        empTable = CreateDataTable();
        Session["EmpTable"] = empTable;

        this.gvEmp.DataSource = ((DataTable)Session["EmpTable"]).DefaultView;
        this.gvEmp.DataBind();
    }
}

private DataTable CreateDataTable()
{
    DataTable myDataTable = new DataTable();
    DataColumn myDataColumn;

    myDataColumn = new DataColumn();
    myDataColumn.DataType = Type.GetType("System.String");
    myDataColumn.ColumnName = "EmpId";
    myDataTable.Columns.Add(myDataColumn);


    myDataColumn = new DataColumn();
    myDataColumn.DataType = Type.GetType("System.String");
    myDataColumn.ColumnName = "EmpId";
    myDataTable.Columns.Add(myDataColumn);

    myDataTable.Rows.Add("111", "aaaaaa");

    return myDataTable;
}

protected void btnIdClick(object sender, EventArgs e)
{
    if (txtEmpId.Text.ToString().Trim() != "")
    {
        DataTable dt = (DataTable)Session["EmpTable"];
        var linquery = from tbl in dt.AsEnumerable()
                    where tbl.Field("EmpId").StartsWith(txtProductId.Text.ToString().Trim())
                    select t;
        DataTable dtable = new DataTable();
        dtable = linquery.CopyToDataTable();
        this.gvEmp.DataSource = dtable;
        this.gvEmp.DataBind();
    }
    else
    {
        this.gvEmp.DataSource = ((DataTable)Session["EmpTable"]).DefaultView;
        this.gvEmp.DataBind();
    }
}