satabeach says:

Chr(&H1F536))

Chr accepts CharCode as Int32.

Ex: Chr(65)

So you can't pass Unicode to the expression. Before passing to RDLC convert the unicode code integer value and pass it so that it returns the character associated with the specified character code.

Hey satabeach,

Please refer below sample.

For creating RDLC report refer below article link.

How to create RDLC report step by step in ASP.Net using C# and VB.Net

HTML

<div>
    <asp:ScriptManager ID="Scriptmanager1" runat="server">
    </asp:ScriptManager>
    <rsweb:ReportViewer ID="ReportViewer1" runat="server">
    </rsweb:ReportViewer>
</div>

Namespaces

C#

using System.Data;
using Microsoft.Reporting.WebForms;

VB.Net

Imports System.Data
Imports Microsoft.Reporting.WebForms

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        ReportViewer1.ProcessingMode = ProcessingMode.Local;
        ReportViewer1.LocalReport.ReportPath = Server.MapPath("~/Report.rdlc");
        DataTable dt = GetData();
        ReportDataSource datasource = new ReportDataSource("Customers", dt);
        ReportViewer1.LocalReport.DataSources.Clear();
        ReportViewer1.LocalReport.DataSources.Add(datasource);
    }
}

private DataTable GetData()
{
    DataTable dt = new DataTable();
    dt.Columns.AddRange(new DataColumn[] { new DataColumn("CustomerID", typeof(int)), new DataColumn("Name", typeof(string)), new DataColumn("UniCodeChar", typeof(string)) });
    dt.Rows.Add(1, "Mudassar Ahmed Khan", System.Convert.ToChar(System.Convert.ToUInt32("2605", 16)));
    dt.Rows.Add(2, "John Hammond", System.Convert.ToChar(System.Convert.ToUInt32("2602", 16)));
    dt.Rows.Add(3, "Suzanne Mathews", System.Convert.ToChar(System.Convert.ToUInt32("260E", 16)));
    dt.Rows.Add(4, "Robert Schidner", System.Convert.ToChar(System.Convert.ToUInt32("2615", 16)));
    return dt;
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not IsPostBack Then
        ReportViewer1.ProcessingMode = ProcessingMode.Local
        ReportViewer1.LocalReport.ReportPath = Server.MapPath("~/Report.rdlc")
        Dim dt As DataTable = GetData()
        Dim datasource As ReportDataSource = New ReportDataSource("Customers", dt)
        ReportViewer1.LocalReport.DataSources.Clear()
        ReportViewer1.LocalReport.DataSources.Add(datasource)
    End If
End Sub

Private Function GetData() As DataTable
    Dim dt As DataTable = New DataTable()
    dt.Columns.AddRange(New DataColumn() {New DataColumn("CustomerID", GetType(Integer)), New DataColumn("Name", GetType(String)), New DataColumn("UniCodeChar", GetType(String))})
    dt.Rows.Add(1, "Mudassar Ahmed Khan", System.Convert.ToChar(System.Convert.ToUInt32("2605", 16)))
    dt.Rows.Add(2, "John Hammond", System.Convert.ToChar(System.Convert.ToUInt32("2602", 16)))
    dt.Rows.Add(3, "Suzanne Mathews", System.Convert.ToChar(System.Convert.ToUInt32("260E", 16)))
    dt.Rows.Add(4, "Robert Schidner", System.Convert.ToChar(System.Convert.ToUInt32("2615", 16)))
    Return dt
End Function

Screenshot