Hi nedash,

Refer the below sample.

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" OnRowDataBound="OnRowDataBound">
    <Columns>
        <asp:TemplateField HeaderText="Id">
            <ItemTemplate>
                <asp:Label ID="lblId" runat="server" Text='<%# Bind("Id") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="sefaresh">
            <ItemTemplate>
                <asp:Label ID="lblSefaresh" runat="server" Text='<%# Bind("sefaresh") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Peygiri Code">
            <ItemTemplate>
                <asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='<%# "ViewSendOrder.aspx?PeygiriCode=" + Eval("PeygiriCode") %>'>ارسال شده</asp:HyperLink>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

protected void Page_Load(object sender, EventArgs e)
{

    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)), 
            new DataColumn("PeygiriCode", typeof(string)), new DataColumn("sefaresh", typeof(string)) });
        dt.Rows.Add(1, "12345", "ارسال");
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        if ((e.Row.FindControl("lblSefaresh") as Label).Text.Trim() == "ارسال")
        {
            GridView1.Columns[2].Visible = false;
        }
    }
}

Output