Hi thereI am using ASPNET C and I have to do something like thisltaspTemplateField HeaderText34text34 ItemStyleHorizontalAlign34Center34 ItemStyleCssClass34ddlClassnew34gt ltItemTemplategt lt if Eval34dOR434ToStringEquals34R34 gt ltaspImageButton ID34btn34 ImageUrl34Imgbullettredbulgif34 runat34server34 gt lt

Hi georgeacuster8937ReferUsing IF ELSE condition in BoundField column in ASPNet GridViewI have used above article and created a Sample for youHTMLltaspGridView ID34gvAttendance34 runat34server34 AutoGenerateColumns34false34 OnRowDataBound34OnRowDataBound34gt ltColumnsgt ltaspBoundField DataField34Id34 HeaderText34Id34 gt ltaspBoundField DataField34Name34 HeaderText34Name34 gt ltaspBoundField DataField34Attendance34 HeaderText34Attendance34 gt ltColumnsgtltaspGridViewgtNamespacesCusing SystemDataCodeCprotected void PageLoadobject sender EventArgs e if thisIsPostBack DataTable dt new DataTable dtColumnsAddRangenew DataColumn3 new DataColumn34Id34 new DataColumn34Name34 new DataColumn34Attendance34 dtRowsAdd1 34John Hammond34 34A34 dtRowsAdd

[Solved] ASP.Net GridView Error: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control

georgeac...

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User: georgeacuster8937
Posted: on Apr 19, 2023 07:17 AM
Forum: Data Controls
Answer: 1
Views: 2341

Hi there,

I am using ASP.NET C#, and I have to do something like this:

<asp:TemplateField
     HeaderText="text"
     ItemStyle-HorizontalAlign="Center"
     ItemStyle-CssClass="ddl_Class_new">
     <ItemTemplate>
         <% if (Eval("dOR_4").ToString().Equals("R"))
             { %>
         <asp:ImageButton ID="btn"
             ImageUrl="/Img/bullett/redbul.gif"
             runat="server" />
         <% }
         else if (Eval("dOR_4").ToString().Equals("G"))
         { %>
         <asp:ImageButton ID="ImageButton5"
             ImageUrl="/Img/bullett/goldbul.gif"
             runat="server" />
         <% }
         else if (Eval("dOR_4").ToString().Equals("V"))
         { %>
         <asp:ImageButton ID="ImageButton6"
             ImageUrl="/Img/bullett/goldbul.gif"
             runat="server" />
         <% } %>
     </ItemTemplate>
 </asp:TemplateField>

But I’m getting error "DataBinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a DataBound control."

I have tried using my code below, but I don't see goldbul.gif

<asp:TemplateField
    HeaderText="text"
    ItemStyle-HorizontalAlign="Center"
    ItemStyle-CssClass="ddl_Class_new">
    <ItemTemplate>
        <asp:ImageButton ID="btnInoltrop"
            ImageUrl='<%# Eval("dOR_4").ToString().Equals("R") ?
                           "/Img/bullett/redbul.gif" :
                          Eval("dOR_4).ToString().Equals("G") ?
                           "/Img/bullett/goldbul.gif" : "/Img/bullett/forestbul.gif" %>'
            runat="server" />
    </ItemTemplate>
</asp:TemplateField>

Any help really appreciated.

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Jeff

0 3

Reply
ANSWER
User: Jeff
Replied: on Apr 20, 2023 06:04 AM
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Hi georgeacuster8937,

Refer:

Using IF ELSE condition in BoundField column in ASP.Net GridView

I have used above article and created a Sample for you.

HTML

<asp:GridView ID="gvAttendance" runat="server" AutoGenerateColumns="false" OnRowDataBound="OnRowDataBound">
    <Columns>
        <asp:BoundField DataField="Id" HeaderText="Id" />
        <asp:BoundField DataField="Name" HeaderText="Name" />
        <asp:BoundField DataField="Attendance" HeaderText="Attendance" />
    </Columns>
</asp:GridView>

Namespaces

using System.Data;

Code

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id"), new DataColumn("Name"), new DataColumn("Attendance") });
        dt.Rows.Add(1, "John Hammond", "A");
        dt.Rows.Add(2, "Mudassar Khan", "P");
        dt.Rows.Add(3, "Suzanne Mathews", "P");
        dt.Rows.Add(4, "Robert Schidner", "A");
        dt.Rows.Add(5, "", "");
        gvAttendance.DataSource = dt;
        gvAttendance.DataBind();
    }
}

protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        TableCell AttendanceCell = e.Row.Cells[2];
        if (AttendanceCell.Text == "A")
        {
            AttendanceCell.Text = "Absent";
        }
        else if (AttendanceCell.Text == "P")
        {
            AttendanceCell.Text = "Present";
        }
        else
        {
            AttendanceCell.Text = "No Record ";
        }
    }
}

Screenshot

I agree, here is the link: https://www.e-iceblue.com/Introduce/spire-office-for-net-free.html

[Solved] ASP.Net GridView Error: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control

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