var sql = new List<string>();
var sqlparams = new List<string>();
int index = ;
foreach (var p in phoneEmailFilters)
{
sql.Add(" txt.Contains(@" + index + ")");
sqlparams.Add(p);
index++;
} var itemQry1 = joinItemQry.Where(string.Join(" or ", sql), sqlparams.ToArray());
这个是一个like的写法