Retrieve string between first and last special character in ASP.Net

Hi nagaraju60,

Refer below example.

HTML

<table>
    <tr>
        <td>
            <asp:GridView runat="server" ID="GridView1" Caption="Input" />
        </td>
        <td>
            <asp:GridView runat="server" ID="GridView2" Caption="Output" />
        </td>
    </tr>
</table>

C#

protected void Page_Load(object sender, EventArgs e)
{
    System.Data.DataTable dt = new System.Data.DataTable();
    dt.Columns.AddRange(new System.Data.DataColumn[] { new System.Data.DataColumn("Number") });
    dt.Rows.Add("AND/001/F01-00");
    dt.Rows.Add("AND/OP/058/F01-00");
    dt.Rows.Add("BZCAL/OP/058/F01-01");
    dt.Rows.Add("AND/011SLNJH/F01-00");
    dt.Rows.Add("AND/OP/068/222/F01-00");
    GridView1.DataSource = dt;
    GridView1.DataBind();
    System.Data.DataTable dtResult = dt.Clone();
    for (int i = 0; i < dt.Rows.Count; i++)
    {
        System.Data.DataRow dr = dtResult.NewRow();
        int startIndex = dt.Rows[i]["Number"].ToString().IndexOf('/') + 1;
        string firstReplace = dt.Rows[i]["Number"].ToString().Substring(startIndex, dt.Rows[i]["Number"].ToString().Length - startIndex);
        dr["Number"] = firstReplace.Substring(0, firstReplace.LastIndexOf('/'));
        dtResult.Rows.Add(dr);
    }
    GridView2.DataSource = dtResult;
    GridView2.DataBind();
}

Screenshot