how to add the rows to gridview

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I want add the no. of rows to gridview like this way but iam facing the problem adding second row.

C#

DataTable dt = new DataTable();
        try
        {
            SqlCommand comm = new SqlCommand();
            SqlConnection conn = new SqlConnection();
            SqlDataReader dr;
            conn.ConnectionString = @"Data Source=.\SQLEXPRESS;AttachDbFilename=" + Server.MapPath("") + @"\App_Data\Database.mdf;Integrated Security=True;User Instance=True";
            conn.Open();
            comm.Connection = conn;

            comm.CommandText = "select name,salary from tulasi ";
            SqlDataAdapter da = new SqlDataAdapter("select name,salary from tulasi ", conn);

            da.Fill(dt);

            comm.ExecuteNonQuery();
            dr = comm.ExecuteReader();
            //    }
            //    DataTable GetData()
            //{

            dt.Columns.Add(new DataColumn("Name", typeof(string)));
            dt.Columns.Add(new DataColumn("sal", typeof(int)));
            //dt.Columns.Add(new DataColumn("Edit", typeof(HyperLink)));
            dt.Columns.Add(new DataColumn("Delete", typeof(string)));
            if (dr.Read())
            {
                DataRow dr1 = dt.NewRow();
                dr1["Name"] = dr.GetString(0);
                Label1.Text = dr.GetString(0);
                Label2.Text = dr.GetInt32(1).ToString();
                dr1["sal"] = dr.GetInt32(1);
                
                //dr1["Edit"] = ResolveUrl("~/App_Data/Autumn.jpg");
                dr1["Delete"] = ResolveUrl("Default2.aspx?sal=" + Label2.Text + "");
                dt.Rows.Add(dr1);

Posted 2-Jun-10 20:57pm

sampath55

Updated 2-Jun-10 21:31pm

Ankur^\m/

v2

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Abhinav S · Answer 1 · 2010-06-02T21:18:00

Solution 1

Try

GridView g = new GridView();
Page.Controls.Add(g);
g.DataSource = dt;

Posted 2-Jun-10 21:18pm

Abhinav S

navi.s · Answer 2 · 2010-06-03T14:54:00

I have done it for the Datalist,similar way you can do it for gridview.

this is the code behind:
Note: First time You have to add table in your datalist and on button click another row will create otherwise write code on your page load

DataTable tbldata = null;
if (ViewState["items"] == null)
{
tbldata = new DataTable();
tbldata.Columns.Add(new DataColumn("ItemId"));
tbldata.Columns.Add(new DataColumn("AssetType"));
tbldata.Columns.Add(new DataColumn("AssetSubType"));
tbldata.Columns.Add(new DataColumn("AssetName"));
tbldata.Columns.Add(new DataColumn("AssetData"));

tbldata.Columns.Add(new DataColumn("Drop1"));
tbldata.Columns.Add(new DataColumn("Drop2"));
}
else
{
tbldata = (DataTable)ViewState["items"];
}
if (Num == 0)
{
DataRow dr = tbldata.NewRow();
tbldata.Rows.Add(dr);
Num = 1;
}
ViewState["items"] = tbldata;
dlstCreateAssets.DataSource = tbldata;
dlstCreateAssets.DataBind();

aspx page:
This will add another row in the datalist.
for saving data you have to take another datatable otherwise it will not save and will not retain the previous data.
So for that you have to take another datatable for that

XML

<asp:UpdatePanel runat="server" ID="UPAssets">
        <ContentTemplate>
            <asp:DataList ID="dlstCreateAssets" runat="server" Width="100%" OnItemDataBound="dlstCreateAssets_ItemDataBound">
                <ItemTemplate>
                    <table border="0" cellpadding="0" cellspacing="0" width="100%">
                        <tr>
                            <td align="center">
                                <div id="content_div">
                                    <table width="100%" border="0" cellpadding="1" cellspacing="0">
                                        <tr>
                                            <td align="left" style="padding-left: 30px;" id="id_td_pageHeading">
                                                <asp:Label ID="lblName" runat="server" Text="Create/Modify Asset" Font-Bold="True"
                                                    Font-Size="Medium" CssClass="cslTitle"></asp:Label>
                                            </td>
                                            <td align="right">
                                                &nbsp;
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="left" style="padding-left: 30px;" class="style20">
                                                (*) Fields Mandatory
                                            </td>
                                            <td align="left">
                                                <asp:Label ID="lblMsg" ForeColor="Red" runat="server" Text="" Visible="false"></asp:Label>
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="left" style="padding-left: 30px;" class="style20">
                                                Item Id
                                            </td>
                                            <td align="left">
                                                <asp:TextBox ID="txtItemId" runat="server" Width="170px" Text='<%#Eval("ItemId")%>'></asp:TextBox>
                                                <asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ControlToValidate="txtItemId"
                                                    ErrorMessage="Enter ItemId" ValidationGroup="usctrl1btn2">*</asp:RequiredFieldValidator>
                                                <asp:RegularExpressionValidator ValidationGroup="usctrl1btn2" ID="RegularExpressionValidator4"
                                                    runat="server" ErrorMessage="Enter only numeric value in Itemid." ControlToValidate="txtItemId"
                                                    SetFocusOnError="True" ValidationExpression="[0-9]*">*</asp:RegularExpressionValidator>
                                                &nbsp;<asp:Button ID="btnCheckAvailability" runat="server" CssClass="asset-viewer-btn"
                                                    OnClick="btnCheckAvailability_Click" Text="Check Availability" />
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="left" style="padding-left: 30px;" class="style20">
                                                Type*
                                            </td>
                                            <td align="left">
                                                <asp:DropDownList ID="DropDownList1" runat="server" DataTextField="AssetTypeName"
                                                    DataValueField="AssetTypeId" Width="170px">
                                                </asp:DropDownList>
                                                <asp:HiddenField runat="server" ID="Drop1" Value='<%#Eval("AssetType")%>' />
                                                &nbsp;<asp:RequiredFieldValidator ValidationGroup="usctrl1" ID="RequiredFieldValidator2"
                                                    runat="server" ControlToValidate="DropDownList1" ErrorMessage="Select Type" InitialValue="-1">*</asp:RequiredFieldValidator>
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="left" style="padding-left: 30px;" class="style20">
                                                SubType*
                                            </td>
                                            <td align="left">
                                                <asp:DropDownList ID="DropDownList2" runat="server" DataTextField="AssetSubTypeName"
                                                    DataValueField="AssetSubTypeId" Width="170px">
                                                </asp:DropDownList>
                                                <asp:HiddenField runat="server" ID="Drop2" Value='<%#Eval("AssetSubType")%>' />
                                                &nbsp;<asp:RequiredFieldValidator ValidationGroup="usctrl1" ID="RequiredFieldValidator3"
                                                    runat="server" ControlToValidate="DropDownList2" ErrorMessage="Select SubType"
                                                    InitialValue="-1">*</asp:RequiredFieldValidator>
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="left" style="padding-left: 30px;" class="style20">
                                                AssetName*
                                            </td>
                                            <td align="left">
                                                <asp:TextBox ID="txtAssetName" runat="server" Width="170px" Text='<%#Eval("AssetName")%>'></asp:TextBox>
                                                &nbsp;<asp:RequiredFieldValidator ValidationGroup="usctrl1" ID="RequiredFieldValidator1"
                                                    runat="server" ErrorMessage="Enter Asset Name" ControlToValidate="txtAssetName">*</asp:RequiredFieldValidator>
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="left" style="padding-left: 30px;" class="style20">
                                                Asset Data
                                            </td>
                                            <td align="left">
                                                <asp:TextBox ID="TextBox2" runat="server" Text='<%#Eval("AssetData")%>' Height="114px"
                                                    TextMode="MultiLine" Width="249px"></asp:TextBox>
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="left" style="padding-left: 30px;" class="style20">
                                                &nbsp;
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="left" style="padding-left: 30px;" class="style20">
                                                <asp:ValidationSummary ValidationGroup="usctrl1" ID="ValidationSummary1" runat="server"
                                                    ShowMessageBox="True" ShowSummary="False" />
                                            </td>
                                            <td align="left">
                                                <asp:Button ID="btnSave" runat="server" OnClick="btnSave_Click" Text="Save" CssClass="asset-viewer-btn" />
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="left" style="padding-left: 30px;" class="style20">
                                                <asp:ValidationSummary ID="ValidationSummary2" runat="server" ShowMessageBox="True"
                                                    ShowSummary="False" ValidationGroup="usctrl1btn2" />
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="left" style="padding-left: 30px;" class="style20">
                                                &nbsp;
                                            </td>
                                            <td align="left">
                                                <asp:Label ID="lblshow" ForeColor="Red" runat="server" Visible="False"></asp:Label>
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                        </tr>
                                        <tr>
                                            <td align="left" style="padding-left: 30px;" class="style20">
                                                &nbsp;
                                            </td>
                                            <td align="right">
                                                &nbsp;
                                            </td>
                                            <td align="left">
                                                &nbsp;
                                            </td>
                                        </tr>
                                    </table>
                                </div>
                            </td>
                        </tr>
                    </table>
                </ItemTemplate>
            </asp:DataList>
        </ContentTemplate>
    </asp:UpdatePanel>