Loggged out and refresh page when open again

Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetExpires(DateTime.Now.AddSeconds(-1));
Response.Cache.SetAllowResponseInBrowserHistory(false);
Response.Cache.SetNoStore();

File upload more than 4 mb issue solving code

    <configuration>

      <system.web>

        <httpRuntime maxRequestLength="2147483645"

          enable = "true"

          requestLengthDiskThreshold="512" useFullyQualifiedRedirectUrl="true"

          executionTimeout="45"

          versionHeader="1.1.4128"/>

      </system.web>

    </configuration>

Get corresponding compare column values from datatable using Linq

public static List<object> GetCorrespondingColumnValue(DataTable dsdatatable, string strCompareColumnName, string strCompareValue, string strReturnColumnName)

        {

            List<object> x = (from r in dsdatatable.AsEnumerable()

                              where (string)r[strCompareColumnName] == strCompareValue.ToString()

                              select r[strReturnColumnName]).ToList();

             

            return x;

        }